Electronic proceedings of the Polish-German WE Heraeus Seminar
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The second Polish-German WE-Heraeus seminar took place in Kraków from November 7th to 11th, 2022 with the aim of intensifying contacts between the communities in the two countries. The broad topic covered a highly topical area of modern astrophysics: the study of transient phenomena in the universe via electromagnetic radiation, cosmic neutrinos, gravitational waves and cosmic rays. Such time-varying emissions provide unique information characterizing the physical states and the processes in the studied astrophysical sources.
The presentations covered, among other items, precision measurements of gravity with the black hole at the center of our galaxy and with pulsars, the search for black holes by microlensing and vice versa the use of gravitational lenses as cosmic telescopes; advances in modeling of pulsars and modeling of particle acceleration processes; study of transients from different parts of the spectrum; astronomy with gravitational waves, with neutrinos and with ultra-high-energy photons and the use of highest-energy cosmic particles to probe violations of Lorentz invariance at scales of the Planck mass. A wide range of shorter presentations and a poster session complemented the invited overview presentations. Copies of the presentations are compiled here in the electronic proceedings of the conference. Concluding the workshop, the participants agreed that the seminar offered more opportunities to think outside the box of one's own research than usual subject-specific conferences and that it not only revealed and created new connections between the communities of the two countries, but also within the respective countries. We would like to thank the WE Heraeus Foundation for initiating this seminar and for the financial and organizational support.
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