Probing the multiwavelength emission scenario of GRB 190114C

Abstract

Multiwavelength observation of the gamma-ray burst, GRB 190114C, opens a new window for studying the emission mechanism of GRB afterglows. Its Very-High-Energy (VHE; $\gtrsim 100$ GeV) detection has motivated an inverse Compton interpretation for the emission, but this has not been tested. Here, we revisit the early afterglow emission from 68 to 180 seconds and perform the modeling likelihood analysis with the keV to TeV datasets. We compute for the first time the statistical preference in the combined synchrotron (syn) and synchrotron self-Compton (SSC) model over the syn-only model. In agreement with earlier analyses, between 68 and 110 seconds an unstable preference for the SSC model can be found, which can also be explained by systematic cross calibration effect between the included instruments. We conclude that there is no stable statistical preference for one of the two models.

References in corpus (13)

• Bayes in the sky: Bayesian inference and model selection in cosmology
• The Physics of Gamma-Ray Bursts and Relativistic Jets
• Teraelectronvolt emission from the $\gamma$-ray burst GRB 190114C
• A very-high-energy component deep in the Gamma-ray Burst afterglow
• A decade of Gamma-Ray Bursts observed by $Fermi$-LAT: The 2${}^{nd}$ GRB catalog
• Observation of inverse Compton emission from a long $\gamma$-ray burst
• Klein-Nishina Effects on Optically Thin Synchrotron and Synchrotron Self-Compton Spectrum
• Revealing x-ray and gamma ray temporal and spectral similarities in the GRB 190829A afterglow
• IACHEC Cross-Calibration of Chandra, NuSTAR, Swift, Suzaku, and XMM-Newton with 3C 273 and PKS 2155-304
• GRB afterglow parameters in the era of TeV observations: the case of GRB~190114C
• A semi-analytic afterglow with thermal electrons and synchrotron self-Compton emission
• The implications of TeV detected GRB afterglows for acceleration at relativistic shocks
• Extension of the synchrotron radiation of electrons to very high energies in clumpy environments

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• The Multiwavelength Picture of GRB 221009A's Afterglow
• Multiwavelength Afterglow Analysis of GRB 221009A: Unveiling the Evolution of a Cooling Break in a Wind-like Medium
• Very high-energy gamma rays from GRB 180720B and GRB 190829A with external Compton emission
• Modelling multiwavelength afterglows of the VHE-GRB population
• Extreme Transients in Gamma Rays