1. Theoretical interpretation of the optical afterglow of GRB 030329
- Author
-
K. S. Cheng, Yao Lu, and Yong-Feng Huang
- Subjects
Physics ,Atmospheric Science ,Jet (fluid) ,Event (relativity) ,Aerospace Engineering ,Astronomy ,Astronomy and Astrophysics ,Astrophysics ,Light curve ,Afterglow ,Moment (mathematics) ,Geophysics ,Space and Planetary Science ,Angular diameter ,GRB 030329 ,General Earth and Planetary Sciences ,Gamma-ray burst - Abstract
A distinguishing feature of GRB 030329 is the obvious rebrightening of its optical afterglow at around t ∼1.6 d. We have re-examined the event numerically in light of three candidate models. Both the density-jump model and the two-component jet model fail to produce any significant rebrightening at the right moment. The energy-injection model seems to be the most preferred choice. By engaging a sequence of energy-injection events, it provides an acceptable fit to the rebrightening at t ∼1.6 d, as well as the whole observed light curve that extends to t ∼80 d.
- Published
- 2007