Hostname: page-component-848d4c4894-2pzkn Total loading time: 0 Render date: 2024-06-10T11:58:47.499Z Has data issue: false hasContentIssue false
  • English
  • Français

Multiwavelength observations of eclipsing polars

Published online by Cambridge University Press:  12 April 2016

A. Schwope ,
V. Hambaryan ,
A. Staude ,
R. Schwarz ,
G. Kanbach ,
H. Steinle ,
F. Schrey ,
T. Marsh ,
V. Dhillon  and
J. Osborne
...Show all authors
A. Schwope
Affiliation:
Astrophysikalisches Institut Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
V. Hambaryan
Affiliation:
Astrophysikalisches Institut Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
A. Staude
Affiliation:
Astrophysikalisches Institut Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
R. Schwarz
Affiliation:
Universitäts-Sternwarte Göttingen, Geismarlandstrasse 11, 37083 Göttingen, Germany
G. Kanbach
Affiliation:
Max-Planck Institut für extraterrestrische Physik, 85718 Garching, Germany
H. Steinle
Affiliation:
Max-Planck Institut für extraterrestrische Physik, 85718 Garching, Germany
F. Schrey
Affiliation:
Max-Planck Institut für extraterrestrische Physik, 85718 Garching, Germany
T. Marsh
Affiliation:
Department of Physics and Astronomy, Southampton University, Highfield, Southampton S017 1BJ, UK
V. Dhillon
Affiliation:
Department of Physics & Astronomy, University of Sheffield, Sheffield S3 7RH, UK
J. Osborne
Affiliation:
Department of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UK
P. Wheatley
Affiliation:
Department of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UK
S. Potter
Affiliation:
SAAO, P.O. Box 9, Observatory, 7935, South Africa

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.

Multiwavelength observations of polars are essential for developing the big picture of these systems, particularly to gain understanding of the relevant accretion-induced heating and cooling processes. Eclipsing polars are prime targets for such studies since different radiation processes can be disentangled by observations with high-time resolution. We present a preliminary combined analysis of space-based observations (XMM-Newton, ROSAT, HST) with ground-based high-speed photometry (MCCP, OPTIMA, ULTRACAM) of DP Leo, HU Aqr and UZ For. We determine the location and extent of different emission components and find secular and short-term changes in the accretion geometries. We find displaced optical and X-ray emission regions in DP Leo and HU Aqr as well as mini-bursts and accretion arcs of variable size in HU Aqr. We report marked changes in the X-ray eclipse length of UZ For between high and low states.

Type
Part 3. A. Accretion Plasma diagnostics - Observations
Information
International Astronomical Union Colloquium , Volume 190: Magnetic Cataclysmic Variables , 2004 , pp. 92 - 105
Copyright
Copyright © Astronomical Society of the Pacific 2004

References

Bailey, J. & Cropper, M., 1991, MNRAS, 253, 27 CrossRefGoogle Scholar
Barwig, H., Schoembs, R. & Buckenmayer, C., 1987, A&A, 175, 327 Google Scholar
Bridge, C. M., Cropper, M., Ramsay, G. (+6 co-authors), 2002, MNRAS, 336, 1129 CrossRefGoogle Scholar
Campbell, C., 1983, MNRAS, 205, 1031 CrossRefGoogle Scholar
Dhillon, V., Marsh, T., Kelly, J. (+8 co-authors), 2002, ASP Conf. Ser. 261, 672 Google Scholar
Hakala, P., Watson, M. G., Vilhu, O., Hassall, B., Kellett, B. J., Mason, K. O., Piirola, V., 1993, MNRAS, 263, 61 CrossRefGoogle Scholar
King, A. R. & Whitehurst, R., 1990, MNRAS, 244, 731 Google Scholar
Osborne, J. P., Giommi, P., Angelini, L., Tagliaferri, G. & Stella, L., 1988, ApJ, 328, L45 CrossRefGoogle Scholar
Pandel, D. & Córdova, F., 2002, MNRAS 336, 1049 CrossRefGoogle Scholar
Pandel, D., Córdova, F., Shirey, R. E., Ramsay, G., Cropper, M., Mason, K. O., Much, R., Kilkenny, D., 2002, MNRAS, 332, 116 CrossRefGoogle Scholar
Perryman, M., Cropper, M., Ramsay, G., Favata, F., Peacock, A., Rando, N., Reynolds, A., 2001, MNRAS, 324, 899 CrossRefGoogle Scholar
Schwope, A., Beuermann, K. & Thomas, H.-C., 1990, A&A, 320, 120 Google Scholar
Schwope, A., Thomas, H.-C. & Beuermann, K., 1993, A&A, 271, L25 Google Scholar
Schwope, A., Schwarz, R., Sirk, M. & Howell, S. B., 2001, A&A, 375, 419 Google Scholar
Schwope, A., Hambaryan, V., Schwarz, R., Kanbach, G., Gänsicke, B., 2002, A&A, 392, 541 Google Scholar
Still, M. & Mukai, K., 2001, ApJ, 562, L71 CrossRefGoogle Scholar
Straubmeier, C., Kanbach, G. & Schrey, F., 2001, Exp. Astronomy, 11, 157 CrossRefGoogle Scholar
Warren, J. K., Sirk, M. M. & Vallerga, J. V., 1995, ApJ, 445, 909 CrossRefGoogle Scholar
Watson, M. G., 1994, in Proc. ROSAT Science Symposium, AIP Conference Proceedings #313, American Institute of Physics (AIP), 1994, eds Schlegel, E. M. & Petre, R.,p. 64 CrossRefGoogle Scholar