The stellar content of the eROSITA all-sky survey The 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...
Looking forward to exciting physics with FASER Physics 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,...
Dark satellites as cosmological probes and gamma-ray dark matter targets A 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....
Quantum Gravity Searches with Neutrino Telescopes The 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...
Observing Supernova Neutrinos with Hyper-Kamiokande and SNEWS 2.0 Hyper-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...
Monitoring the High-Energy Sky with Small Satellites Thanks 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...
News from NHR@FAU - Fritz, Alex and Woody The 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...
Resolving the Baryon Cycle within Nearby Galaxies The 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...
MWL observations of GRBs Over 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...
Ultrahigh energy cosmic rays: an origin story Understanding 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...
Modeling and Observations of Cosmic Reionization In 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...
Low-cost high-fidelity data analysis with simulation-based inference The 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...