http://arxiv.org/abs/2210.14178
Recently, several telescopes, including Swift-BAT, GBM, and LHAASO,
have observed the ever highest-energy and long gamma-rays
from a gamma-ray burst named as GRB221009A (located at a red-shift of
$z=0.15$) on October 9, 2022.
Conventional understanding tells us that very high-energy photons produced
at such a far distance suffer severe attenuation before reaching the Earth.
We propose the existence of a sub-MeV heavy neutrino with a transitional
magnetic dipole moment, via which the heavy neutrino is produced at the GRB.
It then travels a long distance to our galaxy and decays into a neutrino and a photon,
which is observed. In such a way, the original high-energy photon produced
at the GRB can survive the long-distance attenuation.
K. Cheung
Wed, 26 Oct 22
63/73
Comments: 5 pages
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