Volume 392, Number 3, September IV 2002
|Page(s)||931 - 936|
|Section||Interstellar and circumstellar matter|
|Published online||09 September 2002|
Chandra follow-up of bursters with low persistent emission
SRON National Institute for Space Research, Sorbonnelaan 2, 3584 CA Utrecht, The Netherlands
2 Astronomical Institute, Utrecht University, PO Box 80000, 3508 TA Utrecht, The Netherlands
Corresponding author: R. Cornelisse, R.Cornelisse@sron.nl
Accepted: 21 June 2002
We report on Chandra ACIS-S observations of five type I X-ray bursters with low persistent emission: SAX J1324.5-6313, SAX J1752.3-3128, SAX J1753.5-2349, SAX J1806.5-2215, and SAX J1818.7+1424. We designate candidate persistent sources for four X-ray bursters. All candidates are detected at a persistent luminosity level of 10, comparable to soft X-ray transients in quiescence. From the number of bursters with low persistent emission detected so far with the Wide Field Cameras, we estimate a total of such sources in our Galaxy between 30 and 4000.
Key words: binaries: close / stars: individual: SAX J1324.5-6313, SAX J1752.3-3128, SAX J1753.5-2349, SAX J1806.5-2215, SAX J1818.7+1424 / stars: neutron / X-rays: bursts
© ESO, 2002
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