GRB 190829A—A Showcase of Binary Late Evolution

Wang Y. Rueda J.A. Ruffini R. Moradi R. Li L. Aimuratov Y. Rastegarnia F. Eslamzadeh S. Sahakyan N. Zheng Y.
1 September 2022 Institute of Physics

Astrophysical Journal
2022 #936 Issue 2

GRB 190829A is the fourth-closest gamma-ray burst to date (z = 0.0785). Owing to its wide range of radio, optical, X-ray, and very-high-energy observations by HESS, it has become an essential new source that has been examined by various models with complementary approaches. Here, we show in GRB 190829A that the double prompt pulses and the three multiwavelength afterglows are consistent with the type II binary-driven hypernova model. The progenitor is a binary composed of a carbon-oxygen (CO) star and a neutron star (NS) companion. The gravitational collapse of the iron core of the CO star produces a supernova (SN) explosion and leaves behind a new NS (νNS) at its center. The accretion of the SN ejecta onto the NS companion and onto the νNS via matter fallback spins up the NSs and produces the double-peak prompt emission. The synchrotron emission from the expanding SN ejecta, with energy injection from the rapidly spinning νNS and its subsequent spindown, leads to the afterglow in the radio, optical, and X-ray bands. We model the sequence of physical and related radiation processes in BdHNe, and focus on individuating the binary properties that play the relevant roles.

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ICRA, Dip. di Fisica, Università di Roma “La Sapienza”, Piazzale Aldo Moro 5, Roma, I-00185, Italy
ICRANet, Piazza della Repubblica 10, Pescara, I-65122, Italy
INAF—Osservatorio Astronomico d’Abruzzo, Via M. Maggini snc, Teramo, I-64100, Italy
ICRANet-Ferrara, Dip. di Fisica e Scienze della Terra, Università degli Studi di Ferrara, Via Saragat 1, Ferrara, I-44122, Italy
Dip. di Fisica e Scienze della Terra, Università degli Studi di Ferrara, Via Saragat 1, Ferrara, I-44122, Italy
INAF, Istituto di Astrofisica e Planetologia Spaziali, Via Fosso del Cavaliere 100, Rome, I-00133, Italy
INAF, Viale del Parco Mellini 84, Rome, I-00136, Italy
Fesenkov Astrophysical Institute, Observatory 23, Almaty, 050020, Kazakhstan
Department of Physics, Faculty of Physics and Chemistry, Alzahra University, Tehran, Iran
Department of Theoretical Physics, Faculty of Basic Sciences, University of Mazandaran, P.O. Box 47416-, Babolsar, 95447, Iran
ICRANet-Armenia, Marshall Baghramian Avenue 24a, Yerevan, 0019, Armenia
Department of Astronomy, School of Physical Sciences, University of Science and Technology of China, Anhui, Hefei, 230026, China
CAS Key Laboratory for Researches in Galaxies and Cosmology, University of Science and Technology of China, Anhui, Hefei, 230026, China
School of Astronomy and Space Science, University of Science and Technology of China, Anhui, Hefei, 230026, China
al-Farabi Kazakh National University, al-Farabi Avenue 71, Almaty, 050040, Kazakhstan

ICRA
ICRANet
INAF—Osservatorio Astronomico d’Abruzzo
ICRANet-Ferrara
Dip. di Fisica e Scienze della Terra
INAF
INAF
Fesenkov Astrophysical Institute
Department of Physics
Department of Theoretical Physics
ICRANet-Armenia
Department of Astronomy
CAS Key Laboratory for Researches in Galaxies and Cosmology
School of Astronomy and Space Science
al-Farabi Kazakh National University

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