X-ray variability of 4U1700-37 according to ART-P/GRANAT

Authors
Grebenev, SA Lyashenko, OV Pavlinsky, MN Sunyaev, RA
Citation
Sa. Grebenev et al., X-ray variability of 4U1700-37 according to ART-P/GRANAT, ASTROPHYS L, 38(1-6), 1999, pp. 89-92
Citations number
11
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICAL LETTERS & COMMUNICATIONS
ISSN journal
08886512 → ACNP
Volume
38
Issue
1-6
Year of publication
1999
Pages
89 - 92
Database
ISI
SICI code
0888-6512(1999)38:1-6<89:XVO4AT>2.0.ZU;2-F
Abstract
We present results of observations of the known galactic X-ray source 4UL70 0-37 with the telescope ART-P on board GRANAT. The source, being a neutron star accreting from an optical companion stellar wind, exhibited an extreme ly hard (for a neutron star system) spectrum and strong X-ray variability o n a time scale of similar to 10(3) s. We explain the variability in terms o f the stellar wind accretion theory including effects of X-ray heating.