| |
 |
| Paper: |
X-ray Spectral Characteristics of V1432 Aquilae: An Unusual Hot Polar |
| Volume: |
330, The Astrophysics of Cataclysmic Variables and Related Objects |
| Page: |
427 |
| Authors: |
Rana, V.R.; Singh, K.P.; Barrett, P.E. |
| Abstract: |
Results from spectral analysis of X-ray data with the RXTE and XMM-Newton for an asynchronous polar V1432 Aql are presented based on two spectral models – a multi-temperature plasma model and a photo-ionized plasma model. Using a multi-temperature plasma model, the RXTE PCA data are used to constrain the mass of the white dwarf to be 1.2±0.1MSolar. A strong soft X-ray excess below 0.8 keV, seen with XMM MOS, is modelled by a black body component having temperature of 80–90 eV. The emission lines seen at 6.7 and 7.0 keV are well fit using the multi-temperature plasma model, however the 6.4 keV line requires an additional Gaussian component. Two absorbers, one that fully covers the source and another that covers ~ 65% of the source are required. The results from spin phase resolved spectroscopy indicate varying absorption parameters and varying 6.4 keV line flux. X-ray spectral characteristics and their variation with the spin period suggest that V1432 Aql is an unusual hot Polar. The photo-ionized plasma model with a range of column densities for the Fe ions gives a slightly better overall fit and fits all emission line features. |
|
|
|
|
|
