Welcome Address

• Prof. Dr. Karl Mannheim (JMU Würzburg)

History of Astronomy in Franconia

Activities in laboratory astrophysics @ECAP

• Stephan Schreiner (ECAP, Erlangen)

Phase Camera for the Einstein Telescope

• Benjamin Schwab (ECAP)

Morphology on the sphere with Minkowski Tensors

• Caroline Collischon (Bamberg Observatory)

Strongly magnetised accreting neutron stars - advances in observations and modelling

• Ekaterina Sokolova-Lapa (Bamberg Observatory)

Modeling relativistic reflection for an extended corona geometry

• Alexey Nekrasov (Bamberg Observatory)

Numerical simulations of accreting black holes and relativistic jets

• Ainara Saiz Pérez (Julius-Maximilians-Universität Würzburg)

Relativistic jets are among the most powerful phenomena in the Universe. They are launched from rotating supermassive black holes and propagate collimated over thousands of light years while accelerating particles to the highest energies. In order to shield light on the formation, propagation and emission processes of relativistic jets we perform general and special relativistic magneto-hydrodynamical (G[S]RMHD) simulations taking into account radiation microphysics as well as emission processes across the electromagnetic spectrum. In the talk we will provide current updates on the numerical methods and their applications to observations.

Calculating shock acceleration as a subgrid model for particle acceleration in MHD jets

• Patrick Günther (Julius-Maximilians-Universität Würzburg)

VLBI studies of relativistic jets in active galactic nuclei

• Petra Benke (Julius-Maximilians-Universität Würzburg)

Very long baseline interferometry (VLBI) observations enable us to study the parsec-scale structure of active galactic nuclei (AGN), and connect changes in jet brightness and morphology to the multiwavelength variability exhibited by these sources. In this talk, I will focus on our work related to the investigation of the connection between the radio and gamma-ray variability. I will discuss our VLBI studies of a gamma-ray flaring blazar from the early Universe, as well as AGN monitoring programmes aimed at studying high-energy detected sources and strong neutrino associations.

Multi-messenger astronomy with blazars

• Leonard Pfeiffer

News from the IceCube group

• Martin Rongen (ECAP)

Optical Intensity Interferometry with H.E.S.S.

• Andreas Zmija (ECAP)

Intensity interferometry is a technique similar to conventional amplitude interferometry, except that it is insensitive to atmospheric turbulence and that it does not require good optical quality of the telescope system. Therefore arrays of Imaging Atmospheric Cherenkov Telescopes can be (and since a few years are) used to measure the angular sizes of stars and star systems. We report from the first two Intensity Interferometry campaigns at the H.E.S.S. gamma ray observatory in 2022 and 2023.

First Study of the SNR Population in the LMC with eROSITA

• Federico Zangrandi (Bamberg Observatory)

MeV Gamma-Ray Observations

• Thomas Siegert (Julius-Maximilians-Universität Würzburg)

Soft gamma-ray observations are key to understanding the astrophysics of high-energy phenomena including accreting black holes, stellar flares, matter-antimatter annihilations, cosmic rays, and dark matter, among others. In this talk, I will give an overview on how these measurements are performed, the next generation MeV telescope, COSI, and projects in my group related to nucleosynthesis, the cosmic gamma-ray background, and ideas to overcome the MeV sensitivity gap with new instruments concepts.

GNN based Gamma/Hadron Separation with SWGO

• Martin Schneider (ECAP, FAU)

Giant outburst of EXO 2030+375: Spectral and pulse profile evolution

• Philipp Thalhammer (Bamberg Observatory)