2018/11/05 by R. Ruffini, J. A. Rueda, Ruffini, R. +33 · 1 citation
Physics and Astronomy · #FOS: Physical sciences #Gamma-ray bursts and supernovae #General Relativity and Quantum Cosmology (gr-qc) #High Energy Astrophysical Phenomena (astro-ph.HE) #astro-ph.HE #gr-qc
paper · pdf · doi:10.48550/arxiv.1811.01839
updated version (7 pages; 2 figures)
openalex publication_date 2018/11/05 · arxiv created 2019/07/18 · arxiv updated 2019/07/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We motivate how the most recent progress in the understanding the nature of the GeV radiation in most energetic gamma-ray bursts (GRBs), the binary-driven hypernovae (BdHNe), has led to the solution of a forty years unsolved problem in relativistic astrophysics: how to extract the rotational energy from a Kerr black hole for powering synchrotron emission and ultra high-energy cosmic rays. The "inner engine" is identified in the proper use of a classical solution introduced by Wald in 1974 duly extended to the most extreme conditions found around the newborn black hole in a BdHN. The energy extraction process occurs in a sequence impulsive processes each accelerating protons to 1021 eV in a timescale of 10-6 s and in presence of an external magnetic field of 1014 G. Specific example is given for a black hole of initial angular momentum J=0.3 M2 and mass M≈ 3 M_\odot leading to the GeV radiation of 1049 erg⋅s-1. The process can energetically continue for thousands of years.