IIHE invited seminar: The flaring Universe: Neutrinos and Gamma Rays from active Galaxies and Gamma Ray bursts
by
Prof.Julia Tjus(Ruhr-Universität Bochum)
→
Europe/Brussels
Jean Sacton Seminar room (1G003) (IIHE, VUB)
Jean Sacton Seminar room (1G003)
IIHE, VUB
Description
abstract: Theory and observation in astrophysics have undergone drastical changes during the past century, in which more and more wavelengths became accessible for observation and interpretation. We now have the possibility to even use elementary particles like neutrinos, charged cosmic rays and gravitational waves as additional messengers to combine these pieces of information to produce a complete picture of individual astrophysical objects, phenomena or the local and global structure of the Universe. In this talk, I will focus on the most extreme phenomena of the Universe: Gamma-ray bursts and active Galaxies. These are exceptional in the way that they pose those sources in the Universe with the highest luminosities. Active galaxies are extreme galaxies with an active core around a supermassive black hole, gamma-ray bursts are connected to the explosion of massive stars or the merging of compact objects. In the talk, the cocept of these source classes as we have understood it today will be reviewed and current observations of high-energy gamma-rays and neutrinos will be presented to show how these objects emit particles and electromagnetic radiation on extremely short time scales and what we can learn from this.
