摘要
We suggest that a rotating massive black hole(10^(6) M■)located at an inactive galaxy may convert its host into a transient active phase by capturing and disrupting a star.During this period,a transient accretion disk is formed and a strong transient magnetic field can be produced in the inner boundary of the accretion disk.A large amount of rotational energy of the black hole is extracted and released in the ultra relativistic jet with a bulk Lorentz factor larger than 10^(3) via Blandfbrd-Znajek process.The relativistic jet energy can be converted into γ-ray radiation in the shock region located at a distance of about 1.4×10^(16) cm via the external shock mechanism.The observed properties of GRB971214 is used to illustrate our model.
作者
LU Ye
ZHENG Guang-Sheng
ZHAO Gang
YANG Lan-Tian
陆烨;郑广生;赵刚;杨兰田(Beijing Astronomical Observatoryt Chinese Academy of Sciences,Beijing 100012;Department of Physics,Huazhong Normal University,Wuhan 430079;Department of Physics,University of Hong Kong,Pokfulam Road,Hong Kong)
基金
Supported by the National Natural Science Foundation of China under Grant Nos.19725312 and 19773005.
