Chin. Phys. Lett.  2001, Vol. 18 Issue (8): 1153-1155    DOI:
Original Articles |
Gamma-Ray Burst Afterglows with Energy Injection: Homogeneous Versus Wind External Media
WANG Wei1,2;DAI Zi-Gao1
1Department of Astronomy, Nanjing University, Nanjing 210093 2National Astronomical Observatory, Chinese Academy of Sciences, Beijing 100012
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WANG Wei, DAI Zi-Gao 2001 Chin. Phys. Lett. 18 1153-1155
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Abstract 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.
Keywords: 98.70.Rz      97.60.Jd      95.30.Lz     
Published: 01 August 2001
PACS:  98.70.Rz (γ-ray sources; γ-ray bursts)  
  97.60.Jd (Neutron stars)  
  95.30.Lz (Hydrodynamics)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2001/V18/I8/01153
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