Stream-fed Accretion in Intermediate Polars

Coel Hellier

Stream-fed Accretion in Intermediate Polars

天体物理学 2007-05-23 v1

作者: Coel Hellier

摘要

I review the observational evidence for stream-fed accretion in intermediate polars. Recent work on the discless system V2400 Oph confirms the pole-flipping model of stream-fed accretion, but this applies only to a minority of the flow. The bulk of the flow is in the form of blobs circling the white dwarf, a state which might have been a precursor to disc formation in other IPs. I also discuss work on the systems with anomalously long spin periods, V1025 Cen and EX Hya. There are arguments both for and against stream-fed accretion in V1025 Cen, and further work is necessary before reaching a conclusion about this system.

关键词

accretion disk

引用

@article{arxiv.astro-ph/0201475,
  title  = {Stream-fed Accretion in Intermediate Polars},
  author = {Coel Hellier},
  journal= {arXiv preprint arXiv:astro-ph/0201475},
  year   = {2007}
}

备注

10 pages, 6 figures, To appear in 'The Physics of Cataclysmic Variables and Related Objects', Goettingen, August 5-10, 2001; includes low-res figures to reduce size