Indirect imaging of the accretion stream in eclipsing polars - III. HU Aquarii low state

Details Indirect imaging of the accretion stream in eclipsing polars - III. HU Aquarii low state Indirect imaging of the accretion stream in eclipsing polars - III. HU Aquarii low state

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001mnras.326..788h&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 326, Issue 2, pp. 788-798.

Astronomy and Astrophysics

Astronomy

6

Accretion, Accretion Discs, Binaries: Eclipsing, Stars: Individual: Hu Aqr, Novae, Cataclysmic Variables

Scientific paper

We apply our technique for indirect imaging of the accretion stream to the polar HU Aqr, using eclipse profiles observed when the system was in a low-accretion state. The eclipse profile is different from that in the high state, and more variable from cycle to cycle. We find that the stream maps are brightest near the white dwarf and there is no significant brightening in the threading region. In the low state the stream threads on to the magnetic field closer to the L1 point than in the high state, with a footpoint of the accreting field line at high latitude. We then produce maps of the accretion region from polarimetry using Stokes imaging. These show that the majority of the accretion occurs near the equator. The difference between the maps may be explained if most of the stream material is not emitting significantly in the low state. If so, neither the stream eclipse mapping nor Doppler tomography techniques will trace the bulk of the accretion flow between the two stars.

Affiliated with

Also associated with

No associations

Rating

Indirect imaging of the accretion stream in eclipsing polars - III. HU Aquarii low state 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 Indirect imaging of the accretion stream in eclipsing polars - III. HU Aquarii low state, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Indirect imaging of the accretion stream in eclipsing polars - III. HU Aquarii low state will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1155206