摘要
Assuming an adiabatic evolution of a gamma-ray burst(GRB)fireball interacting with an external medium,we calculate the hydrodynamics of the fireball with an energy injection from a strongly magnetic millisecond pulsar through magnetic dipole radiation,and obtain the light curve of the optical afterglow from the fireball by synchrotron radiation.The results are given both for a homogeneous external medium and for a wind ejected by GRB progenitor.Our calculations are also available in both ultra-relativistic and non-relativistic phases.Furthermore,the observed R-band light curve of GRB000301C can be well fitted in our model,which might provide a probe of the properties of GRB progenitors.
作者
WANG Wei
DAI Zi-Gao
王伟;戴子高(Department of Astronomy,Nanjing University,Nanjing 210093;National Astronomical Observatory,Chinese Academy of Sciences,Beijing 100012)
基金
Supported by the National Natural Science Foundation of China under Grant No.19825109
the National 973 project.
