Optical follow up of the GRB 990123 sources from UPSO, Naini Tal

dc.contributor.author	Sagar, R
dc.contributor.author	Pandey, A. K
dc.contributor.author	Mohan, V
dc.contributor.author	Yadav, R. K. S
dc.contributor.author	Nilakshi
dc.contributor.author	Bhattacharya, D
dc.contributor.author	Castro-Tirado, A. J
dc.date.accessioned	2007-10-11T11:37:46Z
dc.date.available	2007-10-11T11:37:46Z
dc.date.issued	1999
dc.identifier.citation	BASI, Vol. 27, No. 1, pp. 3 - 7	en
dc.identifier.uri	http://hdl.handle.net/2248/1878
dc.description.abstract	The CCD magnitudes in Johnson $BV$ and Cousins $R$ 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 $BV$ and $R$ passbands are almost the same. Its value is $1.1\pm 0.06$. Such decay is quite consistent with the fireball models for the optical transient.	en
dc.format.extent	393031 bytes
dc.format.mimetype	application/pdf
dc.language.iso	en	en
dc.publisher	Astronomical Society of India	en
dc.relation.uri	http://adsabs.harvard.edu/abs/1999BASI...27....3S	en
dc.subject	CCD magnitudes	en
dc.subject	GRB 990123	en
dc.subject	Photometry	en
dc.subject	Gamma-ray	en
dc.title	Optical follow up of the GRB 990123 sources from UPSO, Naini Tal	en
dc.type	Article	en