New High-Mass X-ray Binaries Detected By INTEGRAL
Abstract
INTEGRAL has already detected about 400 hard X-ray sources among which half of them were not previously identified. The new sources are mostly AGNs behind the galactic plane and High-Mass X-ray Binaries. 50% of the detected HMXB are new systems, which came as a surprise. Besides several new Be transient, the number of super-giant systems has been multiplied by a factor of 3. Two categories of new super-giant HMXB have been detected: 2/3 of them are persistent highly absorbed systems with NH in excess to 1E23 cm-2 and 1/3 of them are fast transient systems exhibiting flares of few hours every few months. Those new systems highlight a higher variety of stellar wind conditions in super-giant than perviously thought and offer the possibility to probe the stellar wind conditions in massive stars in term of density, clumpness and tidal streams.
- Publication:
-
AAS/High Energy Astrophysics Division #9
- Pub Date:
- September 2006
- Bibcode:
- 2006HEAD....9.0160W