An eclipse in the X-ray flux from the dwarf nova Z Cha.

Details An eclipse in the X-ray flux from the dwarf nova Z Cha. An eclipse in the X-ray flux from the dwarf nova Z Cha.

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...319l..25v&link_type=abstract

Astronomy and Astrophysics, v.319, p.L25-L28

Astronomy and Astrophysics

Astrophysics

22

Accretion, Accretion Disks, Stars: Individual: Z Cha, Cataclysmic Variables, X-Rays: Stars

Scientific paper

Observations obtained with the rosat hri show that the X-rays from the dwarf nova Z Cha in quiescence are eclipsed together with the white dwarf. This confirms the idea that the X-rays are emitted by a narrow boundary layer between the accretion disk and the white dwarf, although a point-like X-ray source near the white-dwarf surface cannot be excluded. The observations further show that during quiescence the mass accretion onto the white dwarf continues, even more than three months after outburst, at a level of >10^-12^Msun_/yr.

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