Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-11-26T19:41:47.609Z Has data issue: false hasContentIssue false
  • English
  • Français

Disc–magnetosphere interactions in cataclysmic variable stars

Published online by Cambridge University Press:  01 May 2007

Coel Hellier
Coel Hellier*
Affiliation:
Astrophysics Group, Keele University, Staffordshire ST5 5BG, U.K. email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

I review, from an observational perspective, the interactions of accretion discs with magnetic fields in cataclysmic variable stars. I start with systems where the accretion flows via a stream, and discuss the circumstances in which the stream forms into an accretion disc, pointing to stars which are close to this transition. I then turn to disc-fed systems and discuss what we know about how material threads on to field lines, as deduced from the pattern of accretion footprints on the white dwarf. I discuss whether distortions of the field lines are related to accretion torques and the changing spin periods of the white dwarfs. I also review the effect on the disc–magnetosphere interaction of disc-instability outbursts. Lastly, I discuss the temporary, dynamo-driven magnetospheres thought to occur in dwarf-nova outbursts, and whether slow-moving waves are excited at the inner edges of the disc.

Keywords

Accretionaccretion disksmagnetic fieldsbinaries: closenovaecataclysmic variablesX-rays: stars
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S243: Star-Disk Interaction in Young Stars , May 2007 , pp. 325 - 336
Copyright
Copyright © International Astronomical Union 2007

References

Araujo-Betancor, S. et al. , 2005, A&A, 430, 629Google Scholar
Beardmore, A.P., Mukai, K., Norton, A.J., Osborne, J.P., & Hellier, C. 1998, MNRAS, 297, 337CrossRefGoogle Scholar
Belle, K.E., Howell, S.B., Mukai, K., Szkody, P., Nishikida, K., Ciardi, D.R., Fried, R.E., Oliver, J.P. 2005, AJ, 129, 1985CrossRefGoogle Scholar
Buckley, D.A.H., Sekiguchi, K., Motch, C., O'Donoghue, D., Chen, A-L., Schwarzenberg-Czerny, A., Pietsch, W., Harrop-Allin, M.K., 1995, MNRAS, 275, 1028CrossRefGoogle Scholar
Buckley, D.A.H., Haberl, F., Motch, C., Pollard, K., Schwarzenberg-Czerny, A., Sekiguchi, K. 1997, MNRAS, 287, 117CrossRefGoogle Scholar
Evans, P.A., & Hellier, C. 2004, MNRAS, 353, 447CrossRefGoogle Scholar
Evans, P.A. & Hellier, C. 2005a, in Hameury, J.-M., Lasota, J.-P. (eds), The Astrophysics of Cataclysmic Variables and Related Objects, ASP Conf. Proc., 330, 165.Google Scholar
Evans, P.A., & Hellier, C. 2005b, MNRAS, 359, 1531CrossRefGoogle Scholar
Evans, P.A., & Hellier, C. 2007, ApJ, 663, 1277CrossRefGoogle Scholar
Evans, P.A., Hellier, C., & Ramsay, G. 2006, MNRAS, 369, 1229CrossRefGoogle Scholar
Evans, P.A., Hellier, C., Ramsay, G., & Cropper, M. 2004, MNRAS, 349, 715CrossRefGoogle Scholar
Frank, J., King, A.R., & Raine, D. 2002, Accretion Power in Astrophysics, (Cambridge: CUP)CrossRefGoogle Scholar
Hellier, C. 1991, MNRAS, 251, 693CrossRefGoogle Scholar
Hellier, C. 1993, MNRAS, 265, L35CrossRefGoogle Scholar
Hellier, C. 1997a, MNRAS, 288, 817CrossRefGoogle Scholar
Hellier, C. 1997b, MNRAS, 291, 71CrossRefGoogle Scholar
Hellier, C. 1998, Adv. Sp. Res., 22, 973CrossRefGoogle Scholar
Hellier, C. 2001, Cataclysmic Variable Stars (Springer-Praxis: Chichester)Google Scholar
Hellier, C. 2002, in Gänsicke, B.T., Beuermann, K., Reinsch, K. (eds), The Physics of Cataclysmic Variables and Related Objects, ASP Conf. Proc., 261, 92.Google Scholar
Hellier, C., & Beardmore, A.P. 2002, MNRAS, 331, 407CrossRefGoogle Scholar
Hellier, C., Garlick, M.A., & Mason, K.O. 1993, MNRAS, 260, 299CrossRefGoogle Scholar
Hellier, C., Harmer, S., & Beardmore, A. P. 2004, MNRAS, 349, 710CrossRefGoogle Scholar
Hellier, C., Kemp, J., Naylor, T., Bateson, F.M., Jones, A., Overbeek, D., Stubbings, R., Mukai, K. 2000, MNRAS, 313, 703CrossRefGoogle Scholar
Hellier, C., & Livio, M. 1994, ApJ, 424, L57CrossRefGoogle Scholar
Hellier, C., Mason, K.O., Rosen, S.R., & Cordova, F.A., 1987, MNRAS, 228, 463CrossRefGoogle Scholar
Hellier, C., Mason, K.O., Smale, A.P., Corbet, R.H.D., O'Donoghue, D., Barrett, P.E., Warner, B., 1989, MNRAS, 238, 1107CrossRefGoogle Scholar
Hellier, C., Mukai, K., & Beardmore, A. P. 1997, MNRAS, 292, 397CrossRefGoogle Scholar
Hellier, C., & Sproats, L.N. 1992, IBVS, 3724Google Scholar
Hellier, C., Wynn, G.A., & Buckley, D.A.H. 2002, MNRAS, 333, 84CrossRefGoogle Scholar
Hellier, C., & van Zyl, L. 2005, ApJ, 626, 1028CrossRefGoogle Scholar
Ishioka, R., et al. 2002, PASJ, 54, 581CrossRefGoogle Scholar
King, A.R., & Lasota, J.-P. 1991, ApJ, 378, 674CrossRefGoogle Scholar
Kuijpers, J., & Pringle, J. E., 1982, A&A, 114, L4Google Scholar
Lasota, J.-P. 2001, New Astron. Revs, 45, 449CrossRefGoogle Scholar
Li, J. 1999, in Hellier, C., Mukai, K. (eds.), Annapolis Workshop on Magnetic Cataclysmic Variables, ASP Conf. Ser., 157, 235Google Scholar
Lubow, S.H., 1989, ApJ, 340, 1064CrossRefGoogle Scholar
Marsh, T.R., & Horne, K. 1998, MNRAS, 299, 921CrossRefGoogle Scholar
Mason, K.O. 1997, MNRAS, 285, 493CrossRefGoogle Scholar
Meintjes, P. J., & Venter, L. A. 2005, MNRAS, 360, 573CrossRefGoogle Scholar
Meintjes, P. J., & de Jager, O. C. 2000, MNRAS, 311, 611CrossRefGoogle Scholar
Mhlahlo, N., Buckley, D.A.H., Dhillon, V.S., Potter, S.B., Warner, B., & Woudt, P.A. 2007a, MNRAS, 378, 211CrossRefGoogle Scholar
Mhlahlo, N., Buckley, D.A.H., Dhillon, V.S., Potter, S.B., Warner, B., Woudt, P., Bolt, G., McCormick, J., Rea, R., Sullivan, D.J. & Velhuis, F. 2007b, MNRAS, in press (arXiv0705.3259)Google Scholar
Morales-Rueda, L., Still, M.D., Roche, P., 1999, MNRAS, 306, 753CrossRefGoogle Scholar
Mukai, K. 2007, IP home page, http://lheawww.gsfc.nasa.gov/users/mukai/iphome/iphome.htmlGoogle Scholar
Norton, A.J., Beardmore, A.P., & Taylor, P. 1996, MNRAS, 280, 937Google Scholar
Norton, A.J., Hellier, C., Beardmore, A.P., Wheatley, P.J., Osborne, J.P., & Taylor, P. 1997, MNRAS, 289, 362CrossRefGoogle Scholar
Norton, A.J., Wynn, G.A., & Somerscales, R.V. 2004, ApJ, 614, 349CrossRefGoogle Scholar
Osaki, Y. 2005, Proc. Japan Acad., Ser. B: Physical and Biological Sciences, 81, 291CrossRefGoogle Scholar
Parker, T.L., Norton, A.J., & Mukai, K. 2005, A&A, 439, 213Google Scholar
Patterson, J. 1994, PASP, 106, 209CrossRefGoogle Scholar
Potter, S.B., Hakala, P.J., & Cropper, M. 1998, MNRAS, 297, 1261CrossRefGoogle Scholar
Potter, S.B., Cropper, M., Mason, K.O., Hough, J.H., & Bailey, J.A. 1997, MNRAS, 285, 82CrossRefGoogle Scholar
Pretorius, M.L., Warner, B., & Woudt, P.A. 2006, MNRAS, 368, 361CrossRefGoogle Scholar
Ramsay, G., & Cropper, M. 2002, MNRAS, 334, 805CrossRefGoogle Scholar
Ramsay, G., & Cropper, M. 2004, MNRAS, 347, 497CrossRefGoogle Scholar
Ramsay, G., Potter, S., Cropper, M., Buckley, D.A.H., & Harrop-Allin, M.K. 2000, MNRAS, 316, 225CrossRefGoogle Scholar
Schmidt, G.D., & Stockman, H.S. 1991, ApJ, 371, 749CrossRefGoogle Scholar
Schwarz, R., Schwope, A.D., Staude, A., & Remillard, R.A. 2005, A&A, 444, 213Google Scholar
Schwope, A. et al. 2004, in Vrielmann, S., Cropper, M. (eds), Magnetic Cataclysmic Variables, ASP Conf. Proc., 315, 92Google Scholar
Staubert, R., Friedrich, S., Pottschmidt, K., Benlloch, S., Schuh, S.L., Kroll, P., Splittgerber, E., Rothschild, R. 2003, A&A, 407, 987Google Scholar
Szkody, P., et al. , 2002, AJ, 123, 413CrossRefGoogle Scholar
Tovmassian, G. et al. 2003, PASP, 115, 725CrossRefGoogle Scholar
Tovmassian, G.H., Zharikov, S.V., & Neustroev, V. V. 2007, ApJ, 655, 466CrossRefGoogle Scholar
Väth, H. 1997, A&A, 317, 476Google Scholar
Vrielmann, S., Ness, J.-U., & Schmitt, J.H.M.M. 2005, A&A, 439, 287Google Scholar
Warner, B. 1995, Cataclysmic Variable Stars (CUP: Cambridge)CrossRefGoogle Scholar
Warner, B. 2004, PASP, 116, 115CrossRefGoogle Scholar
Warner, B., & Woudt, P.A. 2002, MNRAS, 335, 84CrossRefGoogle Scholar
Warner, B., & Woudt, P.A. 2006, MNRAS, 367, 1562CrossRefGoogle Scholar
Warner, B., Woudt, P.A., & Pretorius, M.L. 2003, MNRAS, 344, 1193CrossRefGoogle Scholar
Watson, M.G., King, A.R., & Osborne, J., 1985, MNRAS, 212, 917CrossRefGoogle Scholar
Wheatley, P.J. 1999, in Hellier, C., Mukai, K. (eds), Annapolis Workshop on Magnetic Cataclysmic Variables, ASP. Conf. Ser., 157, 47Google Scholar
Wickramasinghe, D.T., & Ferrario, L. 2000, New Astron. Revs, 44, 69CrossRefGoogle Scholar
Williams, G. 2003, PASP, 115, 618CrossRefGoogle Scholar
Woudt, P.A., & Warner, B. 2002, MNRAS, 333, 411CrossRefGoogle Scholar
Wynn, G.A., & King, A.R. 1995, MNRAS, 275, 9CrossRefGoogle Scholar
Wynn, G.A., & King, A.R., 1992, MNRAS, 255, 83CrossRefGoogle Scholar
Wynn, G.A., King, A.R., & Horne, K. 1997, MNRAS, 286, 436CrossRefGoogle Scholar