SIMBAD references

2013ApJ...773..142L - Astrophys. J., 773, 142 (2013/August-3)

Neutrino-cooled accretion model with magnetic coupling for X-ray flares in gamma-ray bursts.

LUO Y., GU W.-M., LIU T. and LU J.-F.

Abstract (from CDS):

The neutrino-cooled accretion disk, which was proposed to work as the central engine of gamma-ray bursts, encounters difficulty in interpreting the X-ray flares after the prompt gamma-ray emission. In this paper, the magnetic coupling (MC) between the inner disk and the central black hole (BH) is taken into consideration. For mass accretion rates around 0.001 ∼ 0.1 M/s, our results show that the luminosity of neutrino annihilation can be significantly enhanced due to the coupling effects. As a consequence, after the gamma-ray emission, a remnant disk with mass Mdisk ≲ 0.5 M may power most of the observed X-ray flares with the rest frame duration less than 100 s. In addition, a comparison between the MC process and the Blandford-Znajek mechanism is shown on the extraction of BH rotational energy.

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - black hole physics - gamma-ray burst: general - magnetic fields

Simbad objects: 23

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2021.04.22-19:09:21

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