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Communication Dans Un Congrès Année : 2021

Sensitivity of the gamma-ray method for strong primordial magnetic fields

Résumé

We study the sensitivity reach of the gamma-ray method for measurement of relatively strong cosmological magnetic field with strength in the 1-10 pG range using deep exposure of the nearest hard spectrum blazar Mrk 501 with CTA telescopes. We show that the gamma-ray measurement technique can sense the primordial magnetic field with a strength of up to 10^{−11} G. Combination of the cosmic microwave background and gamma-ray constraints can thus sense the full range of possible cosmological magnetic fields to confirm or rule out their relevance to the problem of the origin of cosmic magnetic fields, as well as their influence on recombination and reionization epochs.

Dates et versions

hal-03373302 , version 1 (11-10-2021)

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Alexander Korochkin, Oleg Kalashev, Andrii Neronov, Dmitry Semikoz. Sensitivity of the gamma-ray method for strong primordial magnetic fields. 37th International Cosmic Ray Conference, Jul 2021, Berlin, Germany. pp.919, ⟨10.22323/1.395.0919⟩. ⟨hal-03373302⟩
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