Informace o publikaci
Hard X-ray Emission of Intermediate polars
| Autoři | |
|---|---|
| Rok publikování | 2010 |
| Druh | Článek ve sborníku |
| Konference | BINARIES - KEY TO COMPREHENSION OF THE UNIVERSE |
| Fakulta / Pracoviště MU | |
| Citace | |
| www | http://articles.adsabs.harvard.edu/full/seri/ASPC./0435//0000314.000.html |
| Klíčová slova | CATACLYSMIC VARIABLES |
| Popis | Cataclysmic variables represent a significant fraction of all INTEGRAL detections in hard X-ray/soft gamma-ray. Our deep survey of all known intermediate polars revealed 5 new sources, previously undetected by INTEGRAL. Our analysis based on observational data from INTEGRAL/IBIS and INTEGRAL/JEM-X showed that the fluxes of some intermediate polars are long-term variable. Moreover, this hard X-ray/soft gamma-ray variability is correlated with the changes in optical spectral band. The broad-band spectra (3 - 100 keV) of surveyed intermediate polars can be well fitted by a thermal bremsstrahlung model with reflection from the surface of the white dwarf in some cases. |