The accretion and spreading of matter on white dwarfs

Details The accretion and spreading of matter on white dwarfs The accretion and spreading of matter on white dwarfs

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006newar..50..509f&link_type=abstract

New Astronomy Reviews, Volume 50, Issue 7-8, p. 509-515.

Astronomy and Astrophysics

Astronomy

3

Scientific paper

For a slowly rotating non-magnetized white dwarf the accretion disk extends all the way to the star. At the interface between the accretion disk and the star, the matter moves through a boundary layer (BL) and then spreads toward the poles as new matter continuously piles up behind it. We have solved the 3d compressible Navier Stokes equations on an axisymmetric grid to determine the structure of this BL for different accretion rates (states). The high states show a spreading BL which sets off a gravity wave in the surface matter. The accretion flow moves supersonically over the cusp making it susceptible to the rapid development of gravity wave and/or Kelvin Helmholtz instabilities. This BL is optically thick and extends more than 30° to either side of the disk plane after 3/4 of a Keplerian rotation period (tK = 19 s). The low states also show a spreading BL, but here the accretion flow does not set off gravity waves and it is optically thin.

Affiliated with

Also associated with

No associations

Rating

The accretion and spreading of matter on white dwarfs 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 The accretion and spreading of matter on white dwarfs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The accretion and spreading of matter on white dwarfs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1440324