Astroparticle Physics

Measurements of cosmological magnetic fields with gamma-ray telescopes

by Dmitri Semikoz (APC, Paris)


In this talk I’ll review recent developments in the modelling of measurements of intergalactic magnetic fields with gamma-ray telescopes in the voids of large scale structure. In particular I'll show that the gamma-ray measurement method can be used to detect the primordial magnetic field with a strength of up to 10^{-11} G, values interesting for reducing H0 tension. Same magnetic field, if produced at QCD phase transition can be responsible for NANOGrav gravitational wave signal. Also I’ll discuss how one can distinguish magnetic field produced at inflation by simultaneous measurements of extended emission around several nearby TeV blazars.

Join the meeting here: Zoom link

Meeting ID: 921 1801 0804
Passcode: 68144845