1. Three-stage Collapse of the Long Gamma-Ray Burst from GRB 160625B Prompt Multiwavelength Observations
- Author
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Lipunov, V. M., Sadovnichy, V. A., Panasyuk, M. I., Yashin, I. V., Svertilov, S. I., Simakov, S. G., Svinkin, D., Gorbovskoy, E., Lipunova, G. V., Kornilov, V. G., Frederiks, D., Topolev, V., Rebolo, R., Serra, M., Tiurina, N., Minkina, E., Bogomolov, V. V., Bogomolov, A. V., Iyudin, A. F., Chasovnikov, A., Gabovich, A., Tsvetkova, A., Budnev, N. M., Gress, O. A., Antipov, G., Gorbunov, I., Vlasenko, D., Balanutsa, P., Podesta, R., Zhirkov, K., Kuznetsov, A., Vladimirov, V., Podesta, F., Francile, C., Sergienko, Yu., Tlatov, A., Ershova, O., Cheryasov, D., Yurkov, V., and Krylov, A. V.
- Subjects
Astrophysics - High Energy Astrophysical Phenomena - 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., Comment: 22 pages, 12 figures, 4 tables, accepted for publication in ApJ
- Published
- 2023
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