| Title: | On the GeV Emission of the Type I BdHN GRB 130427A |
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| Authors: | ID Ruffini, Remo (Author)
ID Moradi, Rahim (Author)
ID Rueda, Jorge Armando (Author)
ID Bianco, Carlo Luciano (Author)
ID Cherubini, Christian (Author)
ID Filippi, Simonetta (Author)
ID Chen, Yen-Chen (Author)
ID Karlica, Mile (Author)
ID Sahakyan, Narek (Author)
ID Wang, Yu (Author)
ID Xue, She Sheng (Author)
ID Beccera, Laura (Author) |
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| Files: |
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| Language: | English |
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| Work type: | Not categorized |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | UNG - University of Nova Gorica
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| Abstract: | We propose that the inner engine of a type I binary-driven hypernova (BdHN) is composed of Kerr black hole (BH) in a non-stationary state, embedded in a uniform magnetic field B_0 aligned with the BH rotation axis and surrounded by an ionized plasma of extremely low density of 10^−14 g cm−3. Using GRB 130427A as a prototype, we show that this inner engine acts in a sequence of elementary impulses. Electrons accelerate to ultrarelativistic energy near the BH horizon, propagating along the polar axis, θ = 0, where they can reach energies of ~10^18 eV, partially contributing to ultrahigh-energy cosmic rays. When propagating with $\theta \ne 0$ through the magnetic field B_0, they produce GeV and TeV radiation through synchroton emission. The mass of BH, M = 2.31M ⊙, its spin, α = 0.47, and the value of magnetic field B_0 = 3.48 × 10^10 G, are determined self consistently to fulfill the energetic and the transparency requirement. The repetition time of each elementary impulse of energy ${ \mathcal E }\sim {10}^{37}$ erg is ~10^−14 s at the beginning of the process, then slowly increases with time evolution. In principle, this "inner engine" can operate in a gamma-ray burst (GRB) for thousands of years. By scaling the BH mass and the magnetic field, the same inner engine can describe active galactic nuclei. |
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| Keywords: | black hole physics, binaries, gamma-ray burst, neutron stars, supernovae, Astrophysics - High Energy Astrophysical Phenomena |
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| Publication version: | Version of Record |
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| Year of publishing: | 2019 |
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| Number of pages: | 13 |
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| Numbering: | 886, 2 |
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| PID: | 20.500.12556/RUNG-5656 |
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| COBISS.SI-ID: | 23009283 |
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| DOI: | https://doi.org/10.3847/1538-4357/ab4ce6 |
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| NUK URN: | URN:SI:UNG:REP:BXWOORI6 |
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| Publication date in RUNG: | 20.07.2020 |
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| Views: | 3669 |
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| Downloads: | 0 |
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