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A Comprehensive Study of Bright Fermi-GBM Short Gamma-ray Bursts: I. Multi-Pulse Lightcurves and Multi-Component Spectra

Department of Physics, Nanchang University, Nanchang 330031, China
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Academic Editors: Andrea Melandri and Silvia Piranomonte
Universe 2022, 8(3), 159; https://doi.org/10.3390/universe8030159
Received: 11 February 2022 / Revised: 28 February 2022 / Accepted: 1 March 2022 / Published: 2 March 2022
(This article belongs to the Special Issue Waiting for GODOT—Present and Future of Multi-Messenger Astronomy)
Sorted by the photon fluences of short Gamma-ray Bursts (SGRBs) detected by the Fermi-Gamma Ray Burst Monitor (GBM), nine brightest bursts are selected to perform a comprehensive analysis. All GRB lightcurves are fitted well by 1 to 3 pulses that are modelled by fast-rising exponential decay profile (FRED), within which the resultant rising time is strongly positive-correlated with the full time width at half maxima (FWHM). A photon spectral model involving a cutoff power-law function and a standard blackbody function (CPL + BB) could reproduce the spectral energy distributions of these SGRBs well in the bursting phase. The CPL’s peak energy is found strongly positive-correlated with the BB’s temperature, which indicates they might be from the same physical origin. Possible physical origins are discussed to account for these correlations. View Full-Text
Keywords: Gamma-ray Bursts; thermal component; jet Gamma-ray Bursts; thermal component; jet
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MDPI and ACS Style

Zhao, P.-W.; Tang, Q.-W. A Comprehensive Study of Bright Fermi-GBM Short Gamma-ray Bursts: I. Multi-Pulse Lightcurves and Multi-Component Spectra. Universe 2022, 8, 159. https://doi.org/10.3390/universe8030159

AMA Style

Zhao P-W, Tang Q-W. A Comprehensive Study of Bright Fermi-GBM Short Gamma-ray Bursts: I. Multi-Pulse Lightcurves and Multi-Component Spectra. Universe. 2022; 8(3):159. https://doi.org/10.3390/universe8030159

Chicago/Turabian Style

Zhao, Peng-Wei, and Qing-Wen Tang. 2022. "A Comprehensive Study of Bright Fermi-GBM Short Gamma-ray Bursts: I. Multi-Pulse Lightcurves and Multi-Component Spectra" Universe 8, no. 3: 159. https://doi.org/10.3390/universe8030159

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