Structure of the Prompt Emission of GRB 151027A Within the Fireshell Model
- Authors: Primorac D.1,2, Muccino M.1,2, Moradi R.1,2, Wang Y.1,2, Melon Fuksman J.D.1,2, Ruffini R.1,2, Bianco C.L.1,2, Rueda J.A.1,2
- 
							Affiliations: 
							- ICRANet
- ICRA and University of Rome “Sapienza”
 
- Issue: Vol 62, No 12 (2018)
- Pages: 933-939
- Section: Article
- URL: https://journals.rcsi.science/1063-7729/article/view/192085
- DOI: https://doi.org/10.1134/S1063772918120296
- ID: 192085
Cite item
Abstract
Long gamma-ray burst GRB 151027A was observed by all three detectors onboard the Swift spacecraft, and many more, including MAXI, Konus-Wind and Fermi GBM/LAT instruments. This revealed a complex structure of the prompt and afterglow emission, consisting of a double-peak gammaray prompt with a quiescent period and a HRF/SXF within the X-ray afterglow, together with multiple BB components seen within the time-resolved spectral analysis. These features, within the fireshell model, are interpreted as the manifestation of the same physical process viewed at different angles with respect to the HN ejecta. Here we present the time-resolved and time-integrated spectral analysis used to determine the energy of the e−e+ plasma Etot and the baryon load B. These quantities describe the dynamics of the fireshell up to the transparency point. We proceed with the light-curve simulation from which CBM density values and its inhomogeneities are deduced. We also investigate the properties of GRB 140206A, whose prompt emission exhibits a similar structure.
About the authors
D. Primorac
ICRANet; ICRA and University of Rome “Sapienza”
							Author for correspondence.
							Email: daracparacldv@hotmail.com
				                					                																			                												                	Italy, 							Pescara; Rome						
M. Muccino
ICRANet; ICRA and University of Rome “Sapienza”
														Email: daracparacldv@hotmail.com
				                					                																			                												                	Italy, 							Pescara; Rome						
R. Moradi
ICRANet; ICRA and University of Rome “Sapienza”
														Email: daracparacldv@hotmail.com
				                					                																			                												                	Italy, 							Pescara; Rome						
Y. Wang
ICRANet; ICRA and University of Rome “Sapienza”
														Email: daracparacldv@hotmail.com
				                					                																			                												                	Italy, 							Pescara; Rome						
J. D. Melon Fuksman
ICRANet; ICRA and University of Rome “Sapienza”
														Email: daracparacldv@hotmail.com
				                					                																			                												                	Italy, 							Pescara; Rome						
R. Ruffini
ICRANet; ICRA and University of Rome “Sapienza”
														Email: daracparacldv@hotmail.com
				                					                																			                												                	Italy, 							Pescara; Rome						
C. L. Bianco
ICRANet; ICRA and University of Rome “Sapienza”
														Email: daracparacldv@hotmail.com
				                					                																			                												                	Italy, 							Pescara; Rome						
J. A. Rueda
ICRANet; ICRA and University of Rome “Sapienza”
														Email: daracparacldv@hotmail.com
				                					                																			                												                	Italy, 							Pescara; Rome						
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