SIMBAD references

2000A&A...358..201I - Astronomy and Astrophysics, volume 358, 201-207 (2000/6-1)

Signs of a dead disk in AE Aquarii.

IKHSANOV N.R.

Abstract (from CDS):

The mass-exchange picture in the close binary AEAqr is discussed in the frame of the pulsar-like white dwarf model (Ikhsanov, 1998A&A...338..521I, 1999A&A...347..915I). 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 5.5x1010cm and 8x1010cm, respectively, and the average mass-exchange rate in the system is 4.4x1016g/s. 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 L1 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 380/550km/s and its temperature is about 104K. The other parts of the dead disk are relatively cool ~(2/3)x103K and contribute to the system radiation in the IR spectral region.

Abstract Copyright:

Journal keyword(s): stars: novae, cataclysmic variables - stars: magnetic fields - stars: pulsars: general - stars: individual: AE Aqr

Simbad objects: 1

goto View the references in ADS

To bookmark this query, right click on this link: simbad:2000A&A...358..201I and select 'bookmark this link' or equivalent in the popup menu