Early Fermi and Swift Observations of GRB 190114C
Abstract
An extremely bright long Gamma-Ray Burst (GRB), GRB 190114C, was detected at 20:57:03 UT on 14 January 2019 (T0) by many observatories, including the Fermi Gamma-ray Space Telescope, the Neil Gehrels Swift Observatory, and the Major Atmospheric Gamma Imaging Cherenkov Telescopes (MAGIC) whose detection is the first of a GRB at very high energies. With strong emission in the GeV regime, GRB 190114C is the best sample for keeping track of the broadband spectral evolution, which was not possible for GRB 130427A due to the saturation of detectors such as Gamma-ray Burst Monitor (GBM). We performed time-resolved analysis on GRB 190114C with Fermi and Swift, covering about ten decades in energy. We present a preliminary analysis of several noteworthy features in the evolution of the spectrum and test possible models to understand these results.
- Publication:
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AAS/High Energy Astrophysics Division
- Pub Date:
- March 2019
- Bibcode:
- 2019HEAD...1711294T