A Toy Model for Gamma‐Ray Bursts in Type Ib/c Supernovae | Zendy

WeiHua Lei | Zendy; DingXiong Wang | Zendy; RenYi Ma | Zendy

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A Toy Model for Gamma‐Ray Bursts in Type Ib/c Supernovae

Author(s) -

WeiHua Lei,

DingXiong Wang,

RenYi Ma

Publication year - 2005

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/426378

Subject(s) - gamma ray burst , physics , astrophysics , supernova , baryon , flux (metallurgy) , accretion (finance) , spin (aerodynamics) , horizon , astronomy , materials science , metallurgy , thermodynamics

A toy model for gamma-ray burst-supernovae (GRB-SN) is discussed byconsidering the coexistence of baryon poor outflows from black holes (BHs) anda powerful spin-connection to surrounding disk, giving rise to consistentcalorimetry as described by van Putten (2001a) in a variant of theBlandford-Znajek process (BZ, 1977). In this model the half-opening angle ofthe magnetic flux tube on the horizon is determined by the mapping relationbetween the angular coordinate on the BH horizon and the radial coordinate onthe surrounding accretion disk. The GRB is powered by the baryon poor outflowsin the BZ process, and the associated SN is powered by very small fraction ofthe spin energy transferred from the BH to the disk in the magnetic coupling(MC) process. The timescale of the GRB is fitted by the duration of the openmagnetic flux on the horizon. It turns out that the data of several GRB-SNe arewell fitted with our model.Comment: 19 pages, 7 figures. Accepted by Ap

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