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Is There a Relation between Duration and Eiso in Gamma-Ray Bursts?

Published online by Cambridge University Press:  21 February 2013

Shu-Jin Hou ,
Tong Liu ,
Da-Bin Lin ,
Xue-Feng Wu  and
Ju-Fu Lu
Shu-Jin Hou
Affiliation:
Department of Physics and Institute of Theoretical Physics and Astrophysics, University Xiamen, Fujian 361005, China email: houshujingrb@163.com Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China email: xfwu@pmo.ac.cn
Tong Liu
Affiliation:
Department of Physics and Institute of Theoretical Physics and Astrophysics, University Xiamen, Fujian 361005, China email: houshujingrb@163.com
Da-Bin Lin
Affiliation:
Department of Physics and Institute of Theoretical Physics and Astrophysics, University Xiamen, Fujian 361005, China email: houshujingrb@163.com
Xue-Feng Wu
Affiliation:
Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China email: xfwu@pmo.ac.cn
Ju-Fu Lu
Affiliation:
Department of Physics and Institute of Theoretical Physics and Astrophysics, University Xiamen, Fujian 361005, China email: houshujingrb@163.com
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Abstract

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The system of accretion disk and black hole is usually considered as the central engine of Gamma-ray Bursts (GRBs). It is usually thought that the disk in the central engine of GRBs is the advection-dominated accretion disk, which is developed from a massive (mass Mdisk) torus at radius rdisk. We find a positive correlation between the isotropic gamma-ray energy Eiso and duration (so-called T90) for GRBs. We interpret this correlation within the advection-dominated accretion disk model, associating Eiso and T90 with Mdisk and viscous timescale respectively.

Keywords

Gamma-ray: burstsaccretion, accretion disksblack hole physics

References

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