http://arxiv.org/abs/1901.07505
The Gamma-ray burst (GRB) 190114C has many faces. First it resembles two classical and extraordinary GRBs: GRB 130427A and GRB 090902B. Compared to GRB 130427A, they are both strong sources of GeV emission, exhibiting consistent GeV spectral evolution, and surprisingly they are almost identical in detail for the morphology of light-curves in all X-ray, gamma-ray and GeV bands. Compared to GRB 090902B, they have the most prominent thermal emission, that a large percentage of $> 50\%$ energy is thermal presenting in some time intervals of the early gamma-ray prompt emission. Moreover, MAGIC team reported the detection of ultra-high energy emission ($> 300$~GeV) associated with GRB 190114C, which reveals a new face. In the letter, we present the similarities of the above GRBs, and we discuss a model of a black hole continuously powering the high energy emissions.
Y. Wang, L. Li, R. Moradi, et. al.
Wed, 23 Jan 19
102/111
Comments: 14 pages (including 3 pages appendix), 12 figures, 1 table. Comments are welcome
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