Neutron star low mass X-ray binaries monitoring with INTEGRAL
Abstract
We have been monitoring since 2003 with INTEGRAL a sample of persistent and variable sources of Atoll type, as part of a long time study of X-ray bursters Low Mass X-ray Binaries to discern their hard X-ray characteristics up to 200-300 keV. By the light curves in different energy bands, by the hardness-intensity diagrams and by the detailed spectral states analysis, we discuss the physical parameters dominating the spectral states variations. Then, we compare the results between the sources themselves, evidencing and confirming a wide variability in this field, not only within the different sources but also within the same source, as evidenced in the last studied case of 4U 1722-30 which showed different type of outbursts with different spectral changes.
- Publication:
-
39th COSPAR Scientific Assembly
- Pub Date:
- July 2012
- Bibcode:
- 2012cosp...39.1947T