A study of the X-ray emission of the magnetic cataclysmic variable AE Aquarii

Choi, Chul-Sung ; Dotani, Tadayasu ; Agrawal, P. C. (1999) A study of the X-ray emission of the magnetic cataclysmic variable AE Aquarii The Astrophysical Journal, 525 (1). pp. 399-406. ISSN 0004-637X

Full text not available from this repository.

Official URL: http://iopscience.iop.org/0004-637X/525/1/399

Related URL: http://dx.doi.org/10.1086/307873


We report results from analysis of the X-ray observations of AE Aqr, made with Ginga in 1988 June and with ASCA in 1995 October. Pulsations are detected clearly with a sinusoidal pulse profile with periods of 33.076 ± 0.001 s (Ginga) and 33.077 ± 0.003 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: kT1 = 0.68+0.01-0.02 keV and kT2 = 2.9 +0.3-0.2keV. 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 originates from magnetospheric radiation.

Item Type:Article
Source:Copyright of this article belongs to Institute of Physics.
ID Code:87105
Deposited On:15 Mar 2012 11:21
Last Modified:15 Mar 2012 11:21

Repository Staff Only: item control page