Optical follow up of the GRB 990123 source from UPSO, Nainital
Astrophysics
2007-05-23 v2
Abstract
The CCD magnitudes in Johnson and Cousins photometric passbands are determined for the optical transient of GRB 990123. These observations have been taken approximately 12 hours after trigger of the gamma-ray burst. BVR photometric light curves are obtained by combining the published data with the present measurements. They indicate that the flux decay constants in and passbands are almost the same. Its value is . Such decay is quite consistent with the fireball models for the optical transient.
Cite
@article{arxiv.astro-ph/9902196,
title = {Optical follow up of the GRB 990123 source from UPSO, Nainital},
author = {R. Sagar and A. K. Pandey and V. Mohan and R. K. S. Yadav and Nilakshi and D. Bhattacharya and A. J. Castro-Tirado},
journal= {arXiv preprint arXiv:astro-ph/9902196},
year = {2007}
}
Comments
LaTex file, 5 pages with 1 figure. Bull. Astron. Society India, Vol. 27 (accepted)