Speaker
Dr
Sergey Ostapchenko
(Norwegian University for Science and Technology (NTNU))
Description
We investigate electromagnetic cascades originating from interactions with the
extragalactic photon background of high energy photons emitted by blazars. We
demonstrate that the non-observation of 1ES 0229+200 by Fermi-LAT indicates that a
relatively strong intergalactic magnetic field (IGMF) fills more than 60%
of space, favoring the primordial IGMF origin. We present also a new public code
for the calculation of electromagnetic cascades in the intergalactic medium.
Author
Dr
Sergey Ostapchenko
(Norwegian University for Science and Technology (NTNU))
Co-authors
Prof.
Michael Kachelriess
(Norwegian University for Science and Technology (NTNU))
Dr
Ricard Tomas
(II. Institut fuer Theoretische Physik, Hamburg University)
