Astronomy and Astrophysics – Astrophysics
Scientific paper
1999-09-10
Astronomy and Astrophysics
Astrophysics
24 pages, 7 Postscript figures, AAS LaTex, To appear in the Nov 1 issue of ApJ
Scientific paper
10.1086/307873
We report results from analysis of the X-ray observations of AE Aqr, made with Ginga in June 1988 and with ASCA in October 1995. Pulsations are detected clearly with a sinusoidal pulse profile with periods of $33.076\pm0.001$ s (Ginga) and $33.077\pm0.003$ s (ASCA)\@. The pulse amplitude is relatively small and the modulated flux remains nearly constant despite a factor of 3 change in the average flux during the flare. We reproduce the time-averaged spectrum in the 0.4 -- 10 keV energy band by a thermal emission model with a combination of two different temperatures: kT$_1 = 0.68^{+0.01}_{-0.02}$ keV and kT$_2 = 2.9^{+0.3}_{-0.2}$ keV\@. There is no significant difference between the quiescent and flare energy spectra, although a hint of spectral hardening is recognized during the flare. We interpret these observational results with a model in which AE Aqr is in a propeller stage. Based on this propeller scenario, we suggest that the X-ray emission is originated from magnetospheric radiation.
Agrawal Prahlad C.
Choi Chul-Sung
Dotani Tadayasu
No associations
LandOfFree
A Study of the X-Ray Emission of Magnetic Cataclysmic Variable Ae Aquarii does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A Study of the X-Ray Emission of Magnetic Cataclysmic Variable Ae Aquarii, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Study of the X-Ray Emission of Magnetic Cataclysmic Variable Ae Aquarii will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-546344