Annihilation luminosity of a neutrino-cooled accretion disk in a gamma-ray burst

• 来源期刊: 中国科学G辑(英文版)
• 年，卷（期）: 2009,（5）
• 页码范围: 729-733
• 页数: 5页
• 语种: 英文
• DOI: 10.1007/s11433-009-0089-y

摘要

We discuss how the annihilation luminosity of a neutrino-cooled accretion disk in a gamma-ray burst,LW-, is determined by the disk's fundamental parameters, namely, the mass of the central black hole M,the mass accretion rate M, and the viscosity parameter α.It is shown that LW- depends mainly on M in evidence, and decreases with increasing M, but is almost independent of α. This result argues additionally that the central black hole in a gamma-ray burst must be with a stellar mass.