Self-gravitating collapsing star and black hole spin-up in long gamma ray bursts

• Published in: Astronomy and astrophysics (Berlin) Vol. 677; p. A19
• Main Authors: Janiuk, Agnieszka, Shahamat Dehsorkh, Narjes, Król, Dominika Ł.
• Format: Journal Article
• Language: English
• Published: Heidelberg EDP Sciences 01.09.2023
• Subjects: Amplitudes; Angular momentum; Black holes; Collapsars; Deposition; Emission; Gamma ray astronomy; Gamma ray bursts; Gamma rays; Gravitation; Gravitational instability; Magnetic fields; Magnetic properties; Mathematical models; Parameters; Stellar cores; Stellar envelopes; Stellar magnetic fields; Stellar rotation; Time dependence; Variability

Context. Long gamma ray bursts (GRBs) originate from the collapse of massive, rotating stars. Some of the GRBs exhibit much stronger variability patterns in the prompt GRB emission than the usual stochastic variations. We discuss the mechanisms able to account for this effect. Aims We aim to model t...