Volume 389, Number 2, July II 2002
|Page(s)||L43 - L46|
|Published online||27 June 2002|
Letter to the Editor
Discovery of the neutron star nature of SLX 1737-282
Astronomical Institute, Utrecht University, PO Box 80000, 3508 TA Utrecht, The Netherlands
2 SRON National Institute for Space Research, Sorbonnelaan 2, 3584 CA Utrecht, The Netherlands
3 Dept. of Astronomy, University of Maryland, College Park, MD 20742, USA
4 NASA Goddard Space Flight Center, Code 662, Greenbelt, MD 20771, USA
5 Istituto di Astrofisica Spaziale e Fysica Cosmica (CNR), Area Ricerca Roma Tor Vergata, Via del Fosso , 00133 Roma, Italy
Accepted: 23 April 2002
SLX 1737-282 is a persistent moderately bright X-ray source 12 from the Galactic center. X-ray observations with the Wide Field Cameras on BeppoSAX have for the first time revealed the true nature of SLX 1737-282: a 15 min long thermonuclear flash was detected exposing the source as a neutron star in a binary system. The flash was Eddington-limited constraining the distance to between 5 and 8 kpc. We analyze BeppoSAX, ROSAT, and RXTE data on SLX 1737-282. The persistent 0.5–200 keV luminosity is close to or less than 1% of the Eddington limit which implies a rarely-seen circumstance for thermonuclear flash activity.
Key words: accretion, accretion disks / binaries: close / X-rays: stars: individual: SLX 1737-282, 2E 1737.5-2817, 1RXS J174043.1-281806, RX J1740.7-2818, AX J1740.7-2818
© ESO, 2002
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.