Repozitorij Univerze v Novi Gorici

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Naslov:On the GeV Emission of the Type I BdHN GRB 130427A
Avtorji:Ruffini, Remo (Avtor)
Moradi, Rahim (Avtor)
Rueda, Jorge Armando (Avtor)
Bianco, Carlo Luciano (Avtor)
Cherubini, Christian (Avtor)
Filippi, Simonetta (Avtor)
Chen, Yen-Chen (Avtor)
Karlica, Mile (Avtor)
Sahakyan, Narek (Avtor)
Wang, Yu (Avtor)
Xue, She Sheng (Avtor)
Beccera, Laura (Avtor)
Datoteke:Gradivo nima datotek. Gradivo je morda fizično dosegljivo v knjižnici fakultete, zalogo lahko preverite v COBISS-u. Povezava se odpre v novem oknu
Jezik:Angleški jezik
Vrsta gradiva:Delo ni kategorizirano (r6)
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis: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.
Ključne besede:black hole physics, binaries, gamma-ray burst, neutron stars, supernovae, Astrophysics - High Energy Astrophysical Phenomena
Leto izida:2019
Št. strani:13
Številčenje:2, 886
COBISS_ID:23009283 Povezava se odpre v novem oknu
URN:URN:SI:UNG:REP:BXWOORI6
DOI:https://doi.org/10.3847/1538-4357/ab4ce6 Povezava se odpre v novem oknu
Število ogledov:193
Število prenosov:0
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
Področja:Gradivo ni uvrščeno v področja.
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Skupna ocena:(0 glasov)
Vaša ocena:Ocenjevanje je dovoljeno samo prijavljenim uporabnikom.

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Gradivo je del revije

Naslov:The Astrophysical Journal
Založnik:The American Astronomical Society
Leto izida:2019

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