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The X-ray emission of the polar BL Hydri
G. Matt 1,
R. Barcaroli 1,
T. Belloni 2,
K. Beuermann 3,
J.M. Bonnet-Bidaud 4,
D. De Martino 5,
C. Done 6,
B.T. Gänsicke 3,
M. Guainazzi 7,
M. Mouchet 8, 9 and
K. Mukai 10
Received 28 November 1997 / Accepted 2 March 1998
We report on the analysis of the ASCA and BeppoSAX X-ray observations of the polar system BL Hyi, performed in October 94 and September 96, respectively.
Emission from both poles is apparent from the folded light curves of both observations; the emission from the second pole varies from cycle to cycle, indicating non-stationary accretion there.
The temperature of the post-shock region is estimated to be about 10 keV. Inclusion of both complex absorption and Compton reflection significantly improves the quality of the fit. No soft X-ray component is observed; the BeppoSAX/LECS upper limit to the soft component is in agreement with theoretical expectations for this low magnetic field system.
Key words: stars: novae, cataclysmic variables X-rays: stars stars: individual: BL Hydri
© European Southern Observatory (ESO) 1998
Online publication: June 2, 1998