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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220602T131500
DTEND;TZID=Europe/Berlin:20220602T141500
DTSTAMP:20260417T170427
CREATED:20220510T195823Z
LAST-MODIFIED:20220510T195823Z
UID:3964-1654175700-1654179300@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Patrick Gröschel
DESCRIPTION:Multi-path tolerant beacon localization using a high antenna-count receiver\nIn classic radar localization scenarios the transmitter and the receiver are in the same spot localizing a passive target by illuminating it with EM waves. However\, more and more localization applications arise\, where there is an active beacon/transmitter which is to be localized by some multiple-antenna base station\, e.g. a forklift in a warehouse\, a car in an urban scene\, and many more. For those localization applications\, electromagnetic waves in the microwave spectrum are well suited\, especially when exploiting the knowledge about the phase relations of the receive signal at different antennas of the receiver. The applied localization algorithms generally consider the EM wave to travel directly from the beacon to the base station\, which is not true in a reflective environment (warehouse\, city\, etc.). In such environments the wave also travels along non-direct paths from the beacon to the receiver due to reflections causing the so called “multi-path propagation”\, which causes heavy degradation of the localization accuracy especially in phase-based localization algorithms.\nIn this talk an algorithm is presented which uses compressed sensing and a high antenna count and physically large multi-channel receiver in order to estimate and subtract the impact of the non-direct propagation paths from the receive signal. Based on measurements in a 5.8 GHz radio setup\, it will be shown that this algorithm is well-suited to improve the position estimations in such scenarios.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2022-06-02-patrick-groschel/
LOCATION:Zoom
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220623T130000
DTEND;TZID=Europe/Berlin:20220623T140000
DTSTAMP:20260417T170427
CREATED:20220620T093007Z
LAST-MODIFIED:20220620T093007Z
UID:3981-1655989200-1655992800@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Prasenjit Saha
DESCRIPTION:Next-generation optical interferometry\, or the return of Hanbury Brown and Twiss\nHanbury Brown and Twiss are rightly famous as the pioneers of quantum optics in the 1950s\, but their real goal was astronomical imaging to the sub-milliarcsecond scale and beyond\, enough to resolve stars. This talk will explain how their counter-intuitive technique of intensity interferometry works\, and why it has become topical in the 2020s. Four science cases will be briefly discussed: the mass-radius relation in stars\, astrometric planet searching\, transient fireballs such as novae\, and finally\, a novel test for LISA.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2022-06-23-prasenjit-saha/
LOCATION:ECAP\, room 307\, Erwin-Rommel-Str 1\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220630T130000
DTEND;TZID=Europe/Berlin:20220630T140000
DTSTAMP:20260417T170427
CREATED:20220627T112634Z
LAST-MODIFIED:20220627T112634Z
UID:3987-1656594000-1656597600@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Juergen Schmitt
DESCRIPTION:The stellar content of the eROSITA all-sky survey\nThe eROSITA instrument onboard the Russian-German SRG mission has so far completed more than four all-sky surveys and detected millions of new X-ray sources. Coronal X-ray sources\, i.e. X-ray emitters similar to our Sun\, constitute a significant fraction of the overall eROSITA source count\, yet these X-ray detected stars have properties quite different from those found for the Sun. X-ray emission is the most important proxy indicator for “stellar magnetic activity”\, hence an X-ray survey like that of eROSITA provides insights into the youth of the Sun\, when it was as “magnetically active” as the vast majority of the eROSITA detected stellar X-ray sources. The availability of precise astrometry from the Gaia satellite allows the complete identification of the stellar X-ray sky including an age assessment of the underlying sources. \nI will discuss and highlight these new research opportunities by providing recent eROSITA results on the Sco-Cen star forming region and very energetic eruptions from young stars.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2022-06-30-juergen-schmitt/
LOCATION:ECAP\, room 307\, Erwin-Rommel-Str 1\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220707T130000
DTEND;TZID=Europe/Berlin:20220707T140000
DTSTAMP:20260417T170427
CREATED:20220414T094721Z
LAST-MODIFIED:20220414T094721Z
UID:3931-1657198800-1657202400@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Felix Kling
DESCRIPTION:Looking forward to exciting physics with FASER\nPhysics searches and measurements at high-energy collider experiments traditionally focus on the high-pT region. However\, if particles are light and weakly-coupled\, this focus may be completely misguided: light particles are typically highly collimated around the beam line\, allowing sensitive searches with small detectors\, and even extremely weakly-coupled particles may be produced in large numbers there. The FASER experiment will use the opportunity and extend the LHC’s physics potential by searching for long-lived particles and studying neutrino interactions at TeV energies. In this talk\, I will present the physics potential of FASER for new physics searches\, neutrino physics and QCD and astro-particle physics.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2022-07-07-felix-kling/
LOCATION:ECAP\, room 307\, Erwin-Rommel-Str 1\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20221027T130000
DTEND;TZID=Europe/Berlin:20221027T140000
DTSTAMP:20260417T170427
CREATED:20220617T130652Z
LAST-MODIFIED:20220617T130652Z
UID:3977-1666875600-1666879200@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Miguel Sanchez-Conde
DESCRIPTION:Dark satellites as cosmological probes and gamma-ray dark matter targets\nA prediction of the standard LCDM cosmological model is that dark matter (DM) halos are teeming with numerous self-bound substructure\, or subhalos. At small scales\, subhalos may host no stars/gas at all and thus may not have visible astrophysical counterparts. The existence and precise properties of these ‘dark satellites’ represent important probes of the underlying cosmological model. Also\, they may play a key role on the search for DM via its annihilation products. In this talk\, I will present current numerical work to characterize the subhalo population with unprecedented detail\, and will discuss on the importance that dark satellites may have for DM searches with present or future gamma-ray observatories. I will then summarize the recent efforts we made to search for them in gamma-ray data\, and to set constraints on the nature of the DM particle using these elusive targets.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2022-10-27-miguel-sanchez-conde/
LOCATION:ECAP Laboratory\, 00.061\, Nikolaus-Fiebiger-Str. 2\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20221124T130000
DTEND;TZID=Europe/Berlin:20221124T140000
DTSTAMP:20260417T170427
CREATED:20221031T154712Z
LAST-MODIFIED:20221031T154712Z
UID:4069-1669294800-1669298400@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Alba Domi
DESCRIPTION:Quantum Gravity Searches with Neutrino Telescopes\nThe Standard Model of particle physics and General Relativity are expected to merge into a new theory of Quantum Gravity (QG) at energies approaching the Planck scale. However\, none of the proposed QG approaches has been validated to date. In this context\, several signatures of QG effects in accessible energy regimes\, known as “Windows on Quantum Gravity”\, have been postulated. In particular\, quantum decoherence (QD) or QG-induced violation of Lorentz invariance (LIV)\, could cause modifications in neutrino oscillation patterns accessible to observation with neutrino telescopes.  Moreover\, the phenomenon of QD will provide new possibilities to investigate the neutrino nature as a Dirac or Majorana particle\, as well as to trace possible violations of CPT symmetry in neutrino oscillations. Such a phenomenon represents a totally new scenario where to test the real nature of neutrinos. This talk reviews the efforts made in neutrino physics to search for QD and LIV effects and their implications in terms of QG models.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2022-11-24-alba-domi/
LOCATION:ECAP Laboratory\, 00.061\, Nikolaus-Fiebiger-Str. 2\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20221208T130000
DTEND;TZID=Europe/Berlin:20221208T140000
DTSTAMP:20260417T170427
CREATED:20221128T202913Z
LAST-MODIFIED:20221128T202913Z
UID:4092-1670504400-1670508000@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Jost Migenda
DESCRIPTION:Observing Supernova Neutrinos with Hyper-Kamiokande and SNEWS 2.0\nHyper-Kamiokande is a next generation neutrino and nucleon decay experiment that is expected to start taking data in 2027. In this talk\, I will introduce the experiment and discuss its neutrino astronomy programme\, with a special focus on supernova neutrinos. Towards the end of the talk\, I will also discuss the next-generation SuperNova Early Warning System (SNEWS 2.0)\, which will combine the powers of neutrino physicists and electromagnetic astronomers to optimise multi-messenger observations of the next galactic supernova.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2022-12-08-jost-migenda/
LOCATION:ECAP Laboratory\, 00.061\, Nikolaus-Fiebiger-Str. 2\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20230112T130000
DTEND;TZID=Europe/Berlin:20230112T140000
DTSTAMP:20260417T170427
CREATED:20230105T153326Z
LAST-MODIFIED:20230105T153326Z
UID:4106-1673528400-1673532000@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Norbert Werner
DESCRIPTION:Monitoring the High-Energy Sky with Small Satellites\nThanks to the recent remarkable progress in the development of nano/micro/small-satellites and new launchers on the market\, space is becoming increasingly more accessible. This provides new opportunities to diversify space astronomy which was hitherto dominated by relatively few large projects. I will describe the current plans for small missions\, including nano-satellite constellations\, to monitor the transient high-energy sky and thus also aid multi-messenger astronomy. I will summarise the results of the precursor missions GRBAlpha and VZLUSAT-2\, which are operating in orbit and detecting transients routinely as well as the development of a UV space telescope on a small-sat dedicated to follow-up observations of kilonovae.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2023-01-12-norbert-werner/
LOCATION:ECAP Laboratory\, 00.061\, Nikolaus-Fiebiger-Str. 2\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20230119T130000
DTEND;TZID=Europe/Berlin:20230119T140000
DTSTAMP:20260417T170427
CREATED:20230110T125510Z
LAST-MODIFIED:20230110T125510Z
UID:4110-1674133200-1674136800@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Georg Hager\, Johannes Veh
DESCRIPTION:News from NHR@FAU – Fritz\, Alex and Woody\nThe last year has seen quite a few changes in systems and setups at NHR@FAU. Georg Hager\, Head of Training & Support\, will present details about the flagship systems “Fritz” (Top500 rank 151) and “Alex” (Top500 rank 174) and how to get access to them.\nJohannes Veh from the NHR@FAU Systems & Services division will get you up to speed on all these topics regarding Tier3 use of “Woody” so you can make the most out of the hardware.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2023-01-19-georg-hager-johannes-veh/
LOCATION:ECAP Laboratory\, 00.061\, Nikolaus-Fiebiger-Str. 2\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20230126T130000
DTEND;TZID=Europe/Berlin:20230126T140000
DTSTAMP:20260417T170427
CREATED:20230110T155940Z
LAST-MODIFIED:20230110T155940Z
UID:4113-1674738000-1674741600@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Kathryn Kreckel
DESCRIPTION:Resolving the Baryon Cycle within Nearby Galaxies\nThe buildup of stellar mass through star formation is driven on small (<100pc) scales by physical processes and local conditions\, but regulated across larger (kpc) scales through the baryon cycle. This entails the transformation of gas into stars\, and eventual ejection and recycling of material to form the next generation of stars. The interstellar medium (ISM) provides crucial insights into these processes\, particularly our understanding of radiative and mechanical feedback from young massive stars. The PHANGS (Physics at High Angular resolution in Nearby GalaxieS) collaboration is building a library of uniform\, high-quality\, high-resolution observations of nearby galaxies at the critical “cloud scale” across star-forming galaxy disks by using observations from Hubble\, MUSE/VLT\, JWST\, and ALMA. This provides a characterization of the young star clusters\, the ionized HII regions\, the supernova remnants and the giant molecular clouds\, with which we can explore a comprehensive view of the star-formation process.\nI will present new results from my group\, which has focused on quantifying the impact of these stellar feedback processes on the ISM. I will show how we are leveraging our large statistical samples to establish an evolutionary sequence for HII regions\, linking ionized nebulae with their powering stellar sources. In charting the late-time and large-scale feedback\, I will show how morphological identification of bubbles in molecular and ionized gas\, and now with JWST in the dust\, provides quantitative constraints on different feedback mechanisms. Finally\, I will show how the Local Volume Mapper (LVM) project within SDSS-V will push us towards a 1-10pc view of these physical processes within our own Milky Way and Local Group (LMC/SMC) galaxies.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2023-01-26-kathryn-kreckel/
LOCATION:ECAP Laboratory\, 00.061\, Nikolaus-Fiebiger-Str. 2\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20230209T130000
DTEND;TZID=Europe/Berlin:20230209T140000
DTSTAMP:20260417T170427
CREATED:20230111T115932Z
LAST-MODIFIED:20230111T115932Z
UID:4116-1675947600-1675951200@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Lauren Rhodes
DESCRIPTION:MWL observations of GRBs\nOver the past five years\, six long gamma-ray bursts (GRBs) have been found to have very high energy (VHE\, >100 GeV) counterparts. As a result of this discovery\, it has become apparent that we have been missing half of the energy produced in the afterglow of long GRBs. The jet properties and environments of VHE GRBs vary hugely in a similar manner to that seen in the ‘regular’ long GRB population with evidence of bright reverse shock emission and multiple jet components.\nIn this talk\, I will present a brief overview of what we have learnt from the synchrotron afterglows of five VHE GRBs (including results from Rhodes et al. 2020\, 2022; Giarratana\, Rhodes et al. 2022 and Bright\, Rhodes et al. submitted); introduce the possibilities for studying VHE GRBs as a population of sources; and how the GRB community can work together to better understand these events.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2023-02-09-lauren-rhodes/
LOCATION:ECAP Laboratory\, 00.061\, Nikolaus-Fiebiger-Str. 2\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20230615T130000
DTEND;TZID=Europe/Berlin:20230615T140000
DTSTAMP:20260417T170427
CREATED:20230612T182534Z
LAST-MODIFIED:20230612T182534Z
UID:4219-1686834000-1686837600@ecap.nat.fau.de
SUMMARY:ECAP Seminar: James Matthews
DESCRIPTION:Ultrahigh energy cosmic rays: an origin story\nUnderstanding how ultrahigh energy cosmic rays (UHECRs) reach energies in excess of 1e20 eV stretches particle acceleration physics to its very limits. In this talk\, I will discuss how such energies can be reached\, using general arguments that can often be derived on the back of an envelope. I will review possible particle acceleration mechanisms\, with special attention paid to shock acceleration. Informed by the arguments derived in the talk\, and with insights from Galactic CR acceleration in supernova remnants\, I will then discuss which classes of astrophysical sources might be UHECR sources\, including my own (biased) perspective; generally\, I favour radio galaxies\, GRB afterglows and other sources which are not too compact and dissipate prodigious amounts of energy on large scales. Aided by hydrodynamic simulations\, I will show that shocks in the backflows in radio galaxies are good accelerators of UHECRs\, then present simulations in which the jet flickers and explore the impact on particle acceleration. I will explore a scenario in which a significant fraction of UHECRs originate from local radio galaxies like Centaurus A and Fornax A\, arguing that they can explain the observed UHECR anisotropies. Finally\, I will highlight the importance of variability in these potential UHECR sources\, and explore the intiguing possibility that the UHECR arrival directions are partly a result of “UHECR echoes” or “reverberation” from magnetic structures in the local Universe.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2023-06-15-james-matthews/
LOCATION:ECAP Laboratory\, 00.061\, Nikolaus-Fiebiger-Str. 2\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20230720T124500
DTEND;TZID=Europe/Berlin:20230720T134500
DTSTAMP:20260417T170427
CREATED:20230403T195959Z
LAST-MODIFIED:20230922T175223Z
UID:4167-1689857100-1689860700@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Benedetta Ciardi
DESCRIPTION:Modeling and Observations of Cosmic Reionization\nIn this talk I will introduce the topic of intergalactic medium reionization\, its importance in the context of structure formation and how it is modeled from a theoretical point of view. I will then discuss how observations of the 21cm line from neutral hydrogen can be used to constrain the reionization process and present the latest LOFAR data in this respect.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2023-07-20-benedetta-ciardi/
LOCATION:ECAP Laboratory\, 00.061\, Nikolaus-Fiebiger-Str. 2\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20231019T130000
DTEND;TZID=Europe/Berlin:20231019T140000
DTSTAMP:20260417T170427
CREATED:20231017T124139Z
LAST-MODIFIED:20231017T124245Z
UID:4798-1697720400-1697724000@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Christoph Weniger
DESCRIPTION:Low-cost high-fidelity data analysis with simulation-based inference\nThe increasing volume and sophistication of astrophysical and cosmological data challenge traditional analysis methods\, which often struggle with high-dimensional models and complex observations as seen for instance in gravitational waves\, supernova cosmology\, and gamma-ray data. Highlighting these limitations\, this talk explores how deep learning and simulation-based inference can offer scalable and effective solutions. Despite promising advances\, there are substantial challenges to fully realize the potential of these technologies. This talk will conclude with the crucial next steps in incorporating these techniques more effectively into astrophysical and cosmological data analysis.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2023-10-19-christoph-weniger/
LOCATION:ECAP Laboratory\, 00.061\, Nikolaus-Fiebiger-Str. 2\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20231026T130000
DTEND;TZID=Europe/Berlin:20231026T140000
DTSTAMP:20260417T170427
CREATED:20231017T124139Z
LAST-MODIFIED:20231023T112219Z
UID:4799-1698325200-1698328800@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Jamie Holder
DESCRIPTION:Space Lasers and Aliens: Searching for optical transients with Gamma-ray Light Buckets\nImaging atmospheric Cherenkov telescopes (IACTs) are among the largest and fastest optical telescopes in the world\, ideally suited to searching for nanosecond-timescale optical transients. These could be astrophysical in nature\, or even associated with signals transmitted by extra-terrestrial civilizations. I will describe the methods used to extract such signals from data recorded by the VERITAS telescopes. A definitive test of these techniques is provided by measurement of a LIDAR on board the CALIPSO satellite\, which also holds promise as a unique calibration device for IACTs. I will also discuss the potential of the converse approach – using telescopes designed for SETI to do gamma-ray astronomy.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2023-10-26-jamie-holder/
LOCATION:ECAP Laboratory\, 00.061\, Nikolaus-Fiebiger-Str. 2\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20231116T130000
DTEND;TZID=Europe/Berlin:20231116T140000
DTSTAMP:20260417T170427
CREATED:20231017T124139Z
LAST-MODIFIED:20231116T170957Z
UID:4800-1700139600-1700143200@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Denys Malyshev
DESCRIPTION:Search for primordial black hole dark matter with X-ray satellites and prospects for future missions\nUltralight primordial black holes (PBHs) in the mass range of 1016 – 1022 g are allowed by current observations to constitute a significant fraction\, if not all\, of the dark matter in the Universe. In this work\, we present limits on ultralight\, nonrotating PBHs which arise from the nondetection of the Hawking radiation signals from such objects in the keV – MeV energy band. Namely\, we consider observations from the current-generation missions XMM-Newton and INTEGRAL/SPI and discuss the observational perspectives of the future missions Athena\, eXTP\, and THESEUS for PBH searches. Based on 3.4 Msec total exposure time of XMM-Newton observations of Draco dwarf spheroidal galaxy\, we conclude that PBH with masses ≲ 1016 g cannot make all dark matter at 95% confidence level. Our ON-OFF-type analysis of >100 Msec of INTEGRAL/SPI data on the Milky Way halo puts significantly stronger constraints. Only ≲ 10 % of dark matter can be presented by PBHs with masses ≲ 3 × 1016 g while the majority of dark matter cannot be represented by PBHs lighter than 7 × 1016 g at 95% confidence level. We discuss the strong impact of systematic uncertainty related to the variations of instrumental and astrophysical INTEGRAL/SPI background on the derived results and estimate its level. We also show that future large field-of-view missions such as THESEUS /X-GIS will be able to improve the constraints by a factor of 10 – 100 depending on the level of control of the systematics of these instruments. \nDownload talk slides
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2023-11-16-denys-malyshev/
LOCATION:Zoom
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20231123T130000
DTEND;TZID=Europe/Berlin:20231123T140000
DTSTAMP:20260417T170427
CREATED:20231017T124140Z
LAST-MODIFIED:20231117T105916Z
UID:4801-1700744400-1700748000@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Esra Bulbul
DESCRIPTION:First Results from the eROSITA All-Sky Survey: An Open Window to Precision Cosmology\nClusters of galaxies trace the highest peaks in the cosmic density field and offer an independent and powerful probe of the growth of structure and cosmology. Locating clusters through well-planned multi-wavelength surveys is crucial for testing gravitational theory and cosmology. Successfully launched in July 2019\, eROSITA\, the German-built telescope array operating between 0.2-8 keV on board the Russian-German Spectrum-RG (SRG) mission\, delivers the largest catalogs of clusters of galaxies from its All-Sky Surveys. The first eROSITA all-sky survey\, yielding more than 10\,000 confirmed clusters of galaxies\, constrains the cosmological parameters from cluster mass function and cluster-clustering when combined with the overlapping DES\, HSC\, and KIDS weak lensing surveys. I will summarise the first cluster science\, large scale structure\, and cosmology results from eROSITA’s first All-Sky Survey and provide an outlook for future deeper surveys.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2023-11-23-esra-bulbul/
LOCATION:ECAP Laboratory\, 00.061\, Nikolaus-Fiebiger-Str. 2\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20231130T130000
DTEND;TZID=Europe/Berlin:20231130T140000
DTSTAMP:20260417T170427
CREATED:20231017T124140Z
LAST-MODIFIED:20231116T161738Z
UID:4802-1701349200-1701352800@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Heinrich Päs
DESCRIPTION:Neutrinos\, Quantum Gravity and the Big Questions – New Ideas for New Data\nNeutrinos are perfect probes of quantum gravity. The particles’ weak interactions allow to preserve quantum coherence for very long timespans\, and neutrino telescopes have started to collect data of neutrinos at extreme energies that have travelled extra-galactic distances. Moreover\, the expected breaking of global symmetries such as lepton number in quantum gravity may induce neutrino Majorana masses. The talk discusses how new ideas about quantum gravity could imply exotic properties or phenomena in the neutrino sector\, such as altered dispersion relations\, quantum-gravitational decoherence\, or UV/IR mixing that may be linked to the big open questions of particle physics and cosmology like the nature of dark matter or the electroweak hierarchy problem.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2023-11-30-heinrich-pas/
LOCATION:ECAP Laboratory\, 00.061\, Nikolaus-Fiebiger-Str. 2\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20231205T130000
DTEND;TZID=Europe/Berlin:20231205T140000
DTSTAMP:20260417T170427
CREATED:20231028T150851Z
LAST-MODIFIED:20231123T125351Z
UID:4940-1701781200-1701784800@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Carlos Arguelles
DESCRIPTION:News from the IceCube Neutrino Observatory and Related Phenomenology\nIt has been ten years since IceCube\, a neutrino detector embedded in the Antarctic glacier\, has detected high-energy astrophysical neutrinos. In this informal talk\, I will report on the latest results from IceCube and point out opportunities for searches for new physics. In particular\, I will describe the recent observation of NGC 1068 and the detection of our galaxy in neutrinos. I will present recent proposals to search for new physics with these sources. Finally\, I will provide an update on searches for light sterile neutrinos with high-energy atmospheric neutrinos.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2023-12-05-carlos-arguelles/
LOCATION:ECAP Laboratory\, 00.061\, Nikolaus-Fiebiger-Str. 2\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20231214T130000
DTEND;TZID=Europe/Berlin:20231214T140000
DTSTAMP:20260417T170427
CREATED:20231017T124142Z
LAST-MODIFIED:20231208T105138Z
UID:4804-1702558800-1702562400@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Cosmio Nigro
DESCRIPTION:Community\, Standardisation\, and Reproducibility: does open-source software help advancing high-energy astrophysics?\nIn this talk\, I will discuss how high-energy astrophysics\, and gamma-ray astronomy in particular\, are being transformed by several community-based efforts to develop standardised data and open-source software both for statistical analysis and physical modelling. \nIn the first part of the talk\, I will focus my attention on the Data Formats for Gamma-ray Astronomy (GADF) initiative\, which proposes a standardised format for gamma-ray astronomical data. This format has been successfully adopted by the current generation of gamma-ray instruments; making\, for the first time\, their data analysable with open-source science tools such as Gammapy. I will present some examples of technical results achieved by adopting these standardised data and tools\, and argue for their potential in facilitating future multi-instruments analyses. \nIn the second part of the talk\, I will discuss the endeavor to develop open-source tools for modelling the emission of astrophysical sources\, which are effectively opening the possibility to perform physical interpretation to the community\, a task previously performed by a few groups with proprietary software. \nI will conclude by discussing the potential impact this new philosophy of open-source development can have on our increasingly digital science.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2023-12-14-cosmio-nigro/
LOCATION:Zoom
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240111T130000
DTEND;TZID=Europe/Berlin:20240111T140000
DTSTAMP:20260417T170427
CREATED:20231017T124142Z
LAST-MODIFIED:20240107T214507Z
UID:4803-1704978000-1704981600@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Lucy Oswald
DESCRIPTION:Pulsar polarization: explanations and applications\nPulsar radio emission\, and particularly its polarization\, is a key probe of neutron star physics. This\, in turn\, means that we can use it to advance searches for gravitational waves and to map out the invisible structures of the galaxy. However\, new and improved observations show that the conventional model of pulsar polarization behaviour does not explain everything we see. \nIn this talk\, I will describe how impressive new broad-band observations reveal key relationships between polarization features in pulsar radio emission\, and how this is related to neutron star physics. I will explain how the “partial-coherence model” accounts for these observational results\, with examples of individual and collective pulsar behaviours. Finally\, I will look to the future as we move towards the arrival of the SKA telescopes. I will discuss how large-scale pulsar surveys will advance our ability to use pulsars as accurate tools to probe high energy physics and measure gravitational waves.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2024-01-11-lucy-oswald/
LOCATION:ECAP Laboratory\, 00.061\, Nikolaus-Fiebiger-Str. 2\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240117T150000
DTEND;TZID=Europe/Berlin:20240117T160000
DTSTAMP:20260417T170427
CREATED:20240109T094040Z
LAST-MODIFIED:20240109T094040Z
UID:5052-1705503600-1705507200@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Florian Marquardt
DESCRIPTION:Machine Learning: from Quantum Technologies to Neuromorphic Devices\n 
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2024-01-17-florian-marquardt/
LOCATION:ECAP Laboratory\, 00.061\, Nikolaus-Fiebiger-Str. 2\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240118T130000
DTEND;TZID=Europe/Berlin:20240118T140000
DTSTAMP:20260417T170427
CREATED:20231025T113705Z
LAST-MODIFIED:20240116T205231Z
UID:4918-1705582800-1705586400@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Mirco Huennefeld
DESCRIPTION:Evidence for high-energy neutrinos from the Galactic plane\nThe Milky Way\, our home galaxy\, is visible to the eye as a faint band of light in the night sky. This emission from the Galactic plane extends over a wide range of the electromagnetic spectrum\, from radio to gamma rays. A fraction of the gamma-ray emission is theorized to arise from cosmic rays interacting with the interstellar medium through the decay of neutral pions. The presence of this diffuse gamma-ray emission implies the existence of Galactic neutrinos produced in associated processes. Recently\, strong evidence for the emission of high-energy neutrinos in the Galactic plane was reported by IceCube\, a neutrino detector instrumenting a cubic kilometer of glacial ice at the South Pole. This observation\, enabled by novel tools based on deep learning\, thus opens a new window to study the high-energy universe\, allowing us to further probe the properties of our own Galaxy and the origin of cosmic rays. \nIn this contribution\, I will highlight the recent observation by IceCube and the technical advances that made it possible\, in addition to providing some future prospects.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2024-01-18-mirco-huennefeld/
LOCATION:ECAP Laboratory\, 00.061\, Nikolaus-Fiebiger-Str. 2\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240125T130000
DTEND;TZID=Europe/Berlin:20240125T140000
DTSTAMP:20260417T170427
CREATED:20231017T124142Z
LAST-MODIFIED:20240102T175122Z
UID:4805-1706187600-1706191200@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Gabrijela Zaharijas
DESCRIPTION:Looking for dark matter in gamma rays – can machine learning help?\nWe live in a ‘golden’ time for studies of high-energy (HE) astrophysics as a series of satellite and ground based telescopes currently provide high-precision data\, critical to answer the century old questions on the origin of cosmic rays and physics at the heart of most energetic accelerators in the Universe. This progress has also important implications for fundamental physics\, providing a test on the nature of dark matter (DM) particles\, one of the long-lasting problems in contemporary physics. \nAnalysis of these rich data sets in a comprehensive way\, inducive to identification of telltale signs of new astro- and fundamental physics\, however\, presents a significant challenge. As one of the most promising avenues\, the machine learning (ML) techniques have been developed and embraced in a number of fields that share availability and related challenges of large data sets. In HE astrophysics however\, in particular in the subfield related to cosmic rays and their interactions in the Galaxy\, as well as in indirect DM searches\, these techniques were rarely taken advantage of\, due to particular data analysis challenges (in particular\, limited training samples). \nIn this talk I will discuss the application of ML techniques to gamma-ray Fermi-LAT data on two concrete scientific challenges: determination of the nature of the Galactic center excess and detection and classification of (faint) gamma-ray sources\, both of high relevance in both\, astro- and fundamental physics. Extension and challenges of such applications to next generation telescopes (e.g. the CTA) will also be outlined.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2024-01-25-gabrijela-zaharijas/
LOCATION:ECAP Laboratory\, 00.061\, Nikolaus-Fiebiger-Str. 2\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240201T133000
DTEND;TZID=Europe/Berlin:20240201T143000
DTSTAMP:20260417T170427
CREATED:20231218T150301Z
LAST-MODIFIED:20240201T091001Z
UID:5037-1706794200-1706797800@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Malte Göttsche
DESCRIPTION:Civilian and military use of nuclear technology\nTo exploit nuclear technology for civilian purposes\, in particular energy production\, a variety of facilities – a nuclear fuel cycle – is necessary\, comprising reactors and uranium enrichment plants among others. These same facilities\, however\, produce the fissile materials that are required to build nuclear weapons: plutonium and highly enriched uranium. Thus\, nuclear fuel cycle facilities are inherently dual-use. The civilian or military nature of a nuclear program can only be assessed by verifying nuclear programs. This is the task of the International Atomic Energy Agency\, which conducts on-site inspections. The development of verification technologies is a topic of on-going research. Besides an introduction into the nuclear fuel cycle and its uses\, this talk will address one particular verification approach under development which intersects with particle physics: antineutrino monitoring to verify reactors operations.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2024-02-01-malte-gottsche/
LOCATION:Zoom
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240311T140000
DTEND;TZID=Europe/Berlin:20240311T150000
DTSTAMP:20260417T170427
CREATED:20240229T083721Z
LAST-MODIFIED:20240229T193652Z
UID:5093-1710165600-1710169200@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Ellis Owen
DESCRIPTION:Exploring the signatures of cosmic ray feedback effects in galaxy ecosystems\nCosmic rays go hand-in-hand with violent and energetic astrophysical conditions. They are an active agent within galactic and circumgalactic ecosystems\, where they can deposit energy and momentum\, modify the circulation of baryons\, and even have the potential to regulate star-formation on local and galactic scales. Their influence in galaxies can be probed using observable signatures across the electromagnetic spectrum\, with high energy radiation being particularly important to determine their energy budget\, feedback power and hydrodynamic effects. In this talk\, I will discuss some of the astrophysical impacts hadronic and leptonic cosmic rays can have in and around galaxies\, how their influence can be probed using signatures in X-rays and gamma-rays\, and the opportunities soon to open-up that will allow us to map-out the multi-scale effects of cosmic rays in galaxies near and far.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-ellis-owen-11-03-24/
LOCATION:ECAP Laboratory\, 00.061\, Nikolaus-Fiebiger-Str. 2\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240425T130000
DTEND;TZID=Europe/Berlin:20240425T140000
DTSTAMP:20260417T170427
CREATED:20240419T113417Z
LAST-MODIFIED:20240419T113417Z
UID:5151-1714050000-1714053600@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Atreya Acharyya
DESCRIPTION:Recent Highlights from the VERITAS AGN Program\nVERITAS is one of the world’s most sensitive detectors of astrophysical very high energy (VHE; E > 100 GeV) gamma rays. This observatory began full-scale operations in 2007\, and more than 8\,000 hours of its good-weather observations have been targeted on active galactic nuclei (AGN). Approximately ~250 AGN were observed with VERITAS\, many of these as part of a comprehensive program to discover new VHE AGN. VERITAS spectral and variability measurements\, and accompanying broadband observations\, are key probes of the underlying jet-powered processes in AGN. Recent scientific highlights from the VERITAS AGN discovery program will be presented.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2024-04-25-atreya-acharyya/
LOCATION:ECAP Laboratory\, 00.061\, Nikolaus-Fiebiger-Str. 2\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240508T120000
DTEND;TZID=Europe/Berlin:20240508T130000
DTSTAMP:20260417T170427
CREATED:20240506T120026Z
LAST-MODIFIED:20240506T120026Z
UID:5176-1715169600-1715173200@ecap.nat.fau.de
SUMMARY:Physics Department Colloquium: Yuri Y. Kovalev
DESCRIPTION:Multi-messenger Lighthouses of the Universe: The many extremes of Active Galactic Nuclei\nAbstract: Active galactic nuclei (AGN) make the most significant contribution to the overall energy balance in the Universe in all electromagnetic bands not dominated by the cosmic microwave background. A good understanding of physical processes and phenomena driving this contribution is paramount for addressing the key challenges in astrophysics and cosmology\, including accretion onto black holes\, electromagnetic fields\, and shock waves in relativistic plasma.\nThese factors can be best studied with comprehensive programs combining dedicated multi-band and multi-messenger measurements with ultra-high angular resolution imaging in the radio regime enabled by the technique of very long baseline interferometry (VLBI). \nIn this talk I will discuss results from several such studies which we have conducted recently\, targeting different aspects of AGN physics.\nThe discovery of extreme brightness in blazars\, made with space VLBI observations\, has set new limits on the very high rates of energy release in plasma.\nThe mounting observational indications for extragalactic neutrino production in blazar-type AGN now begin to deliver key understanding about the physics of proton\nacceleration in blazars\, either nearby central supermassive black holes or in plasma shocks embedded in the relativistic jets. Deriving from these results\,\nthe continued improvements of sensitivity and fidelity of VLBI observations\, and the expected advent of a true era of multi-messenger astronomy\,\nI will conclude by outlining several fundamental directions for studying the physical nature of AGN which will become feasible in the coming years.
URL:https://ecap.nat.fau.de/index.php/event/physics-department-colloquium-yuri-y-kovalev/
LOCATION:Hörsaalgebäude Physikum\, Staudtstr. 5\, Erlangen\, 91058\, Germany
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240516T123000
DTEND;TZID=Europe/Berlin:20240516T133000
DTSTAMP:20260417T170427
CREATED:20240502T111424Z
LAST-MODIFIED:20240514T130742Z
UID:5164-1715862600-1715866200@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Katharina Breininger
DESCRIPTION:Improving our understanding of machine learning robustness – in microscopy and beyond\nA central goal when applying machine learning in the biomedical research and medical imaging is to answer relevant interdisciplinary questions robustly and reliably across various setups and ideally modalities; however\, this is challenged by different imaging systems\, differences between a laboratory setting and the real world as well as a multitude of other factors. This talk will explore the challenge of domain generalization in digital pathology\, microscopy\, and beyond. Specifically\, we will discuss the Mitosis Domain Generalization (MIDOG) Challenge that took place at the International Conference on Medical Image Computing and Computer Assisted Intervention (MICCAI) in 2021 and 2022 as one example how we can work toward more robust machine learning approaches. Furthermore\, we will explore how we can potentially transfer the corresponding machine learning insights from imaging very tiny structures close-by to structures far\, far away.
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2024-05-16-katharina-breininger/
LOCATION:ECAP Laboratory\, 00.061\, Nikolaus-Fiebiger-Str. 2\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240523T130000
DTEND;TZID=Europe/Berlin:20240523T140000
DTSTAMP:20260417T170427
CREATED:20240514T130551Z
LAST-MODIFIED:20240514T130551Z
UID:5186-1716469200-1716472800@ecap.nat.fau.de
SUMMARY:ECAP Seminar: Lucy Fortson
DESCRIPTION:Muon Hunting with the Crowd: Combining Humans and Machines to Solve Big Data Problems\nIn this presentation\, I will describe the Zooniverse.org citizen science platform as a tool to gather labels from over 2.7 million dedicated volunteers worldwide who are motivated to participate in scientific research. Hundreds of research teams now turn to Zooniverse for crowdsourcing tasks such as image classification and annotation\, which provide the large labeled data sets needed for optimal training of machine algorithms. I will demonstrate the ease with which a project can be developed with the Zooniverse Project Builder tools and describe the infrastructure available for integrating machine learning with Zooniverse including sophisticated active learning techniques. I will provide examples from across several projects in astronomy and astroparticle physics\, with a focus on the Muon Hunter project used to gather millions of labels to train a machine algorithm for an imaging air Cherenkov telescope calibration pipeline. I will finish with a look at how we are working to combine human and machine intelligence to probe large data sets\, including those from Cherenkov telescopes\, for scientifically interesting anomalous events. \n 
URL:https://ecap.nat.fau.de/index.php/event/ecap-seminar-2024-05-23-lucy-fortson/
LOCATION:ECAP Laboratory\, 00.061\, Nikolaus-Fiebiger-Str. 2\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
END:VCALENDAR