Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26a...358..201i&link_type=abstract
Astronomy and Astrophysics, v.358, p.201-207 (2000)
Astronomy and Astrophysics
Astrophysics
6
Stars: Novae, Cataclysmic Variables, Stars: Magnetic Fields, Stars: Pulsars: General, Stars: Individual: Ae Aqr
Scientific paper
The mass-exchange picture in the close binary AE Aqr is discussed in the frame of the pulsar-like white dwarf model (Ikhsanov \cite{I3}, \cite{I4}). It is shown that within this approach a dead disk around the white dwarf magnetosphere is expected. The disk forms during (and/or just after) the outburst associated with the white dwarf spin-up -> spin-down state transition. In the current epoch the inner and the outer radii of the disk are evaluated as 5.5x 1010 cm and 8 x 1010 cm, respectively, and the average mass-exchange rate in the system is 4.4 x 1016 g s-1. About a half of the accretion energy is released in the boundary layer at the inner edge of the disk in the optical-UV (about 80%) and soft X-ray (about 20%) spectral domains. The mass exchange between the components is governed by the stream-fed mechanism of mass transfer through the L_1 point. The plasma inflowing from the secondary interacts with the outer edge of the dead disk and streams out from the system mainly at phases 0.25/0.75. The velocity of outflowing plasma in quiescence lies within the interval 380 /550 km s-1 and its temperature is about 104 K. The other parts of the dead disk are relatively cool ~ (2/3) x 103 K and contribute to the system radiation in the IR spectral region.
No associations
LandOfFree
Signs of a dead disk in 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 Signs of a dead disk in AE Aquarii, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Signs of a dead disk in AE Aquarii will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1387098