Three-stage Collapse of the Long Gamma-Ray Burst from GRB 160625B Prompt Multiwavelength Observations
Abstract
This article presents the early results of synchronous multiwavelength observations of one of the brightest gamma-ray bursts (GRBs) GRB 160625B with the detailed continuous fast optical photometry of its optical counterpart obtained by MASTER and with hard X-ray and gamma-ray emission, obtained by the Lomonosov and Konus-Wind spacecraft. The detailed photometry led us to detect the quasi-periodical emission components in the intrinsic optical emission. As a result of our analysis of synchronous multiwavelength observations, we propose a three-stage collapse scenario for this long and bright GRB. We suggest that quasiperiodic fluctuations may be associated with forced precession of a self-gravitating rapidly rotating superdense body (spinar), whose evolution is determined by a powerful magnetic field. The spinar's mass allows it to collapse into a black hole at the end of evolution.
Keywords
Cite
@article{arxiv.2302.05920,
title = {Three-stage Collapse of the Long Gamma-Ray Burst from GRB 160625B Prompt Multiwavelength Observations},
author = {V. M. Lipunov and V. A. Sadovnichy and M. I. Panasyuk and I. V. Yashin and S. I. Svertilov and S. G. Simakov and D. Svinkin and E. Gorbovskoy and G. V. Lipunova and V. G. Kornilov and D. Frederiks and V. Topolev and R. Rebolo and M. Serra and N. Tiurina and E. Minkina and V. V. Bogomolov and A. V. Bogomolov and A. F. Iyudin and A. Chasovnikov and A. Gabovich and A. Tsvetkova and N. M. Budnev and O. A. Gress and G. Antipov and I. Gorbunov and D. Vlasenko and P. Balanutsa and R. Podesta and K. Zhirkov and A. Kuznetsov and V. Vladimirov and F. Podesta and C. Francile and Yu. Sergienko and A. Tlatov and O. Ershova and D. Cheryasov and V. Yurkov and A. V. Krylov},
journal= {arXiv preprint arXiv:2302.05920},
year = {2023}
}
Comments
22 pages, 12 figures, 4 tables, accepted for publication in ApJ