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PRODID:-//Erlangen Centre for Astroparticle Physics - ECPv6.2.3.2//NONSGML v1.0//EN
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X-WR-CALNAME:Erlangen Centre for Astroparticle Physics
X-ORIGINAL-URL:https://ecap.nat.fau.de
X-WR-CALDESC:Events for Erlangen Centre for Astroparticle Physics
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BEGIN:VTIMEZONE
TZID:Europe/Berlin
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20170326T010000
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BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20171029T010000
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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20170628T120000
DTEND;TZID=Europe/Berlin:20170628T130000
DTSTAMP:20260505T035125
CREATED:20170421T085216Z
LAST-MODIFIED:20170421T085216Z
UID:1454-1498651200-1498654800@ecap.nat.fau.de
SUMMARY:Livia Ludhova - JUNO: the first multi-kton liquid scintillator based neutrino detector
DESCRIPTION:The Jiangmen Underground Neutrino Observatory (JUNO) is a neutrino experiment under construction near Jiangmen\, China. Its main component  will be a spherical 20 kton liquid scintillator detector placed in a 700 m deep underground laboratory. The experiment is designed for the determination of the neutrino mass hierarchy by measuring oscillation effects of neutrinos from two nuclear power plants at 53 km baseline. In addition to that\, JUNO has the potential to increase the precision of already measured oscillation parameters and it can give a major contribution in the field of geoneutrinos. Astrophysical measurements of solar\, supernova\, atmospheric and potentially of DSNB neutrinos are also part of the physics programme. The seminar will review the physics goals\, design\, as well as the status of the JUNO project.
URL:https://ecap.nat.fau.de/index.php/event/seminar-2017-06-28-livia-ludhova/
LOCATION:ECAP\, room 307\, Erwin-Rommel-Str 1\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20170621T120000
DTEND;TZID=Europe/Berlin:20170621T130000
DTSTAMP:20260505T035125
CREATED:20170425T110005Z
LAST-MODIFIED:20170425T110005Z
UID:1507-1498046400-1498050000@ecap.nat.fau.de
SUMMARY:Harm Schoorlemmer - Observing the TeV gamma-ray sky with the High-Altitude Water Cherenkov Observatory
DESCRIPTION:The High-Altitude Water Cherenkov Observatory (HAWC) collected more than a year of data in its full configuration. With its large field of view and high uptime it is exposed to two-thirds of the sky every day. From the light distribution in the arrays water-Cherenkov tanks we discriminate between electromagnetic and hadronic showers\, which enable us to study the cosmic ray and gamma ray sky separately. In this contribution\, we will give an overview of the detector and the reconstruction performance. In addition\, the TeV gamma-ray sky as observed by HAWC will be presented and we will discuss its major astrophysical results.
URL:https://ecap.nat.fau.de/index.php/event/seminar-2017-06-21-harm-schoorlemmer/
LOCATION:ECAP\, room 307\, Erwin-Rommel-Str 1\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20170614T120000
DTEND;TZID=Europe/Berlin:20170614T130000
DTSTAMP:20260505T035125
CREATED:20170502T110314Z
LAST-MODIFIED:20170502T110314Z
UID:1555-1497441600-1497445200@ecap.nat.fau.de
SUMMARY:Alexander Fieguth - XENON1T & the challenge of direct dark matter detection
DESCRIPTION:Driven by the profound evidence from cosmology and astronomy the existence of dark matter is well-established as a part of our universe. Despite the fact\, that there is five times more dark matter than baryonic matter out in the universe\, its nature remains puzzling up to now. The promising idea of Weakly Interacting Massive Particles (WIMPs) being the constituents of this form of matter is pursued with great effort. Especially their direct detection with earth-bound detectors has grown large interest within the last years as the technologies have reached sensitivities for WIMP interactions with baryonic matter at cross sections in the zeptobarn regime. One leading detector type to look for these interactions is the dual-phase xenon time projection chamber (TPC)\, which is the technology pursed by the XENON collaboration. Within the XENON dark matter project different detectors of this kind have been built\, growing in size and knowledge. The current detector XENON1T\, which is the first ton-scale dual-phase xenon dark matter detector\, utilizes 3.2 tons of xenon in order to search for WIMP-nucleon interactions. While it is running with the lowest background ever achieved in a dark matter experiment so far\, a first blind data set has been analyzed and shows that it is the most sensitive detector for the search of WIMPs with masses above 20 GeV/cm². Once XENON1T has reached its science goal\, XENONnT\, a larger detector within the same infrastructure\, will take the challenge to the next level.
URL:https://ecap.nat.fau.de/index.php/event/seminar-2017-06-14-alexander-fieguth/
LOCATION:ECAP\, room 307\, Erwin-Rommel-Str 1\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20170607T120000
DTEND;TZID=Europe/Berlin:20170607T130000
DTSTAMP:20260505T035125
CREATED:20170510T094203Z
LAST-MODIFIED:20170510T094203Z
UID:1602-1496836800-1496840400@ecap.nat.fau.de
SUMMARY:Philipp Mertsch - Cosmic ray anisotropies: unravelling sources and transport
DESCRIPTION:The arrival directions of Galactic cosmic rays are highly isotropic. This is expected from the presence of turbulent magnetic fields in our Galactic environment that repeatedly scatter charged cosmic rays during propagation. However\, various cosmic ray observatories have identified weak anisotropies of various angular sizes and with relative intensities of up to a level of 1 part in 1000. On large scales\, the observed amplitude is much smaller than predicted by models of cosmic ray diffusion. On small scales\, the appearance of small-scale anisotropies down to an angular size of 10 degrees is surprising. I will argue that taking into account the intermittent nature of the turbulent magnetic field could resolve these issues. The small-scale anisotropies in particular reflect the turbulent magnetic field in our Galactic neighbourhood and provide a new handle for testing its structure.
URL:https://ecap.nat.fau.de/index.php/event/philipp-mertsch-cosmic-ray-anisotropies-unravelling-sources-and-transport/
LOCATION:ECAP\, room 307\, Erwin-Rommel-Str 1\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20170531T120000
DTEND;TZID=Europe/Berlin:20170531T130000
DTSTAMP:20260505T035125
CREATED:20170321T103304Z
LAST-MODIFIED:20170321T103304Z
UID:829-1496232000-1496235600@ecap.nat.fau.de
SUMMARY:Francesco Longo - GRB observations at High and Very High Energy
DESCRIPTION:Gamma Ray Bursts are among the most powerful astrophysical phenomena. In the recent past many observations shed light on their high-energy (HE\, E>10 MeV) emission properties. In the seminar I will describe the observations of GRBs by the currently operating HE satellites AGILE and Fermi. I will discuss the main observational properties of the detected bursts and their main theoretical interpretations. \nAt very high energies (E>100 GeV) the detection of GRBs by currently operating Imaging Atmospheric Cherenkov telescopes is still missing. Based on the observation of GRBs at lower energies\, I will discuss the prospects of GRB detection by future VHE facilities\, like the Cherenkov Telescope Array.
URL:https://ecap.nat.fau.de/index.php/event/seminar-2017-05-31-francesco-longo/
LOCATION:ECAP\, room 307\, Erwin-Rommel-Str 1\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20170524T120000
DTEND;TZID=Europe/Berlin:20170524T130000
DTSTAMP:20260505T035125
CREATED:20170321T102900Z
LAST-MODIFIED:20170321T102900Z
UID:827-1495627200-1495630800@ecap.nat.fau.de
SUMMARY:Andrii Neronov - Galactic and extragalactic contributions to the astrophysical neutrino flux
DESCRIPTION:Spectral and anisotropy properties of IceCube astrophysical neutrino signals reveal evidence for a sizeable Galactic contribution to the neutrino flux in the Southern Hemisphere. I will review this evidence and relate it to the absence of Galactic component signature in the muon neutrino signal from the Northern sky. I will discuss implications of the possible Galactic component of the astrophysical neutrino flux for understanding of the cosmic ray content of the Milky Way and of the locally observed cosmic ray flux. I will also review possible options for the extragalactic astrophysical neutrino flux component which presumably dominates the signal in the Northern hemisphere.
URL:https://ecap.nat.fau.de/index.php/event/seminar-2017-05-24-andrii-neronov/
LOCATION:ECAP\, room 307\, Erwin-Rommel-Str 1\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20170523T100000
DTEND;TZID=Europe/Berlin:20170523T110000
DTSTAMP:20260505T035125
CREATED:20170321T100740Z
LAST-MODIFIED:20170321T100740Z
UID:820-1495533600-1495537200@ecap.nat.fau.de
SUMMARY:Jakob van Santen - What's new in IceCube?
DESCRIPTION:The IceCube Neutrino Observatory is a 1 km3 optical Cherenkov detector embedded deep in the ice sheet that covers the geographic South Pole. Since its completion in the austral summer of 2010\, data from the observatory have provided the first evidence for a flux of extraterrestrial high-energy neutrinos of multiple flavors. At the same time\, the lack of significant clustering of neutrinos in space or time has provided constraints on the kinds of steady and transient sources that contribute to the flux. I will review current IceCube results\, provide an overview of ongoing efforts to sharpen them\, and briefly discuss plans for future detectors at the South Pole.
URL:https://ecap.nat.fau.de/index.php/event/seminar-2017-05-23-jakob-van-santen/
LOCATION:ECAP\, room 307\, Erwin-Rommel-Str 1\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20170517T120000
DTEND;TZID=Europe/Berlin:20170517T130000
DTSTAMP:20260505T035125
CREATED:20170320T180346Z
LAST-MODIFIED:20170320T180346Z
UID:809-1495022400-1495026000@ecap.nat.fau.de
SUMMARY:Kathrin Valerius - Status and prospects of direct neutrino mass searches: News from KATRIN and outlook on future projects
DESCRIPTION:Precision measurements of the kinematics of weak decays offer the only model- independent (direct) approach to investigate the absolute neutrino mass scale in a laboratory experiment. \nIn this talk I will review the status of direct neutrino mass searches based on beta decay of tritium and electron capture in 163Ho and give an overview of future experiments. The currently most mature technique relies on the spectroscopy of tritium beta decay near its kinematic endpoint at 18.6 keV. The KArlsruhe TRItium Neutrino experiment (KATRIN) is targeted at improving the sensitivity of this method by an order of magnitude to 200 meV/c2 (90% C.L.). To this end\, KATRIN utilises an ultra-luminous windowless gaseous tritium source and a high-resolution electrostatic spectrometer. In its recent „First Light“ campaign\, KATRIN has successfully inaugurated its full 70-m electron beam line and is now carrying out final commissioning works leading up to the start of tritium measurements. \nAt the same time\, novel approaches studying the electron capture spectrum in 163Ho with cryogenic microcalorimeters (notably\, ECHo\, HOLMES\, and NuMECS)\, or developing innovative techniques for tritium beta spectroscopy using radio-frequency detection of single electrons (Project 8) are gaining momentum. Experiments exploiting these new techniques are currently in the conceptual design and prototype characterisation phases\, with the aim of developing these complementary methods further towards a sub-eV sensitivity on the neutrino mass.
URL:https://ecap.nat.fau.de/index.php/event/seminar-2017-05-17-kathrin-valerius/
LOCATION:ECAP\, room 307\, Erwin-Rommel-Str 1\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20170510T120000
DTEND;TZID=Europe/Berlin:20170510T130000
DTSTAMP:20260505T035125
CREATED:20170428T093141Z
LAST-MODIFIED:20170428T093141Z
UID:1530-1494417600-1494421200@ecap.nat.fau.de
SUMMARY:Stefan Geißelsöder - Pattern recognition and deep learning
DESCRIPTION:Algorithms from the field of pattern recognition are used throughout industry and academia. In particular machine learning algorithms have become an established technique in modern experimental physics\, for instance for the discrimination between desired measurements and background. In recent years\, the concept of deep learning has gained considerable attention in the machine learning community and beyond\, achieving record breaking performance for a multitude of tasks. This talk introduces some basics of pattern recognition and a few of the most popular approaches in deep learning\, namely convolutional neural networks (CNNs)\, recurrent neural networks and autoencoders. Results of first applications of CNNs for the KM3NeT neutrino telescope are also presented. They have been produced using the Keras framework with TensorFlow\, the open source tool from Google.
URL:https://ecap.nat.fau.de/index.php/event/seminar-2017-05-10-stefan-geisselsoeder/
LOCATION:ECAP\, room 307\, Erwin-Rommel-Str 1\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20170426T120000
DTEND;TZID=Europe/Berlin:20170426T130000
DTSTAMP:20260505T035125
CREATED:20170419T135305Z
LAST-MODIFIED:20170419T135305Z
UID:1430-1493208000-1493211600@ecap.nat.fau.de
SUMMARY:Abigail Stevens - Comparing origins of low-frequency quasi-periodic oscillations with spectral timing
DESCRIPTION:The light curves of low-mass X-ray binaries show variability on timescales from milliseconds to months. The shorter (sub-second) variability is particularly interesting because it is thought to probe the inner region of the accretion disk and the central compact object. X-ray spectral-timing is a new type of analysis that seeks to investigate how matter behaves in the strong gravitational field around the compact object. Observations suggest that different types of low-frequency quasi-periodic oscillations (QPOs) are associated with different emitting-region geometries (e.g.\, disk-like or jet-like) in the innermost part of the X-ray binary\, that are varying possibly due to general relativistic precession. We developed a technique for phase-resolved spectroscopy of QPOs\, and are applying it to two types of low-frequency QPOs from the black hole X-ray binary GX 339-4. Over a QPO “period”\, we find that the energy spectrum changes not only in normalization\, but also in spectral shape. We can quantify how the spectral shape changes as a function of QPO phase\, and the two different QPOs show markedly different spectral changes. This talk will feature results from this paper\, as well as new preliminary results.
URL:https://ecap.nat.fau.de/index.php/event/seminar-2017-04-26-abigail-stevens/
LOCATION:ECAP\, room 307\, Erwin-Rommel-Str 1\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
END:VEVENT
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