Title of article :
V1432 Aql: A polar or an intermediate polar?
Author/Authors :
Singh، K. P. نويسنده , , Rana، V. R. نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2003
Pages :
-230
From page :
231
To page :
0
Abstract :
We present evidence for a spin period of 4070 s in a magnetic cataclysmic variable V1432 Aql, classified as a polar. The evidence is based on the analysis of archival X-ray data obtained from a 25 ks long and uninterrupted observations with XMMNewton. We also detect modulation of the X-ray flux with the orbital period, various harmonics of the spin period, and sidebands due to beating of the spin period with the orbital period. The energy-dependent light curves and hardness ratios show a very complex behaviour with both the spin phase and the orbital phase, indicating the presence of multiple absorbers of different densities. The observed characteristics suggest the presence of a disk in the system and accretion via a disk-overflow mechanism as is commonly observed in intermediate polars.
Keywords :
stars , binaries , cataclysmic variables , accretion , close , V1432 Aql , accretion disks , X-rays , Individual , novae
Journal title :
Astronomy and Astrophysics
Serial Year :
2003
Journal title :
Astronomy and Astrophysics
Record number :
78124
Link To Document :
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