| Issue |
A&A
Volume 392, Number 3, September IV 2002
|
|
|---|---|---|
| Page(s) | 931 - 936 | |
| Section | Interstellar and circumstellar matter | |
| DOI | https://doi.org/10.1051/0004-6361:20021183 | |
| Published online | 09 September 2002 | |
Chandra follow-up of bursters with low persistent emission
1
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
Received:
13
February
2002
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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