DISCOVERY AND OBSERVATIONS BY WATCH OF THE X-RAY TRANSIENT GRS 1915+105

Authors
CASTROTIRADO AJ BRANDT S LUND N LAPSHOV I SUNYAEV RA SHLYAPNIKOV AA GUZIY S PAVLENKO EP
Citation
Aj. Castrotirado et al., DISCOVERY AND OBSERVATIONS BY WATCH OF THE X-RAY TRANSIENT GRS 1915+105, The Astrophysical journal. Supplement series, 92(2), 1994, pp. 469-472
Citations number
22
Categorie Soggetti
Astronomy & Astrophysics
Journal title
The Astrophysical journal. Supplement series → ACNP
ISSN journal
00670049
Volume
92
Issue
2
Year of publication
1994
Pages
469 - 472
Database
ISI
SICI code
0067-0049(1994)92:2<469:DAOBWO>2.0.ZU;2-Z
Abstract
The X-ray transient GRS 1915+105 was discovered on 1992 August 15 by t he WATCH all-sky X-ray monitor on GRANA T. The source is located in th e Galactic plane. The initial X-ray light curve is presented, as well as the results of a search for the optical counterpart of the source, which apparently is fainter than 21 mag. Assuming that the source is a low-mass X-ray binary, a lower limit of 1.5 kpc is derived for the di stance to the source. The possibility of the source lying inside one o f the two molecular cloud complexes along the line of sight is discuss ed.