Hostname: page-component-78c5997874-mlc7c Total loading time: 0 Render date: 2024-11-19T06:47:21.019Z Has data issue: false hasContentIssue false
  • English
  • Français

Dwarf Nova Outbursts and Superoutbursts

Published online by Cambridge University Press:  12 April 2016

J. Smak
J. Smak*
Affiliation:
N. Copernicus Astronomical Center, Polish Academy of Sciences, Bartycka 18, 00-716 Warsaw, Poland, e-mail:jis@camk.edu.pl

Extract

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.

Dwarf nova outbursts provide an almost unique opportunity of getting an insight into the nature of viscosity in accretion disks or, within the α- disk approach, of putting some constraints on α. In particular, the strong dependence of the viscous time-scale on viscosity itself permits us to estimate a almost directly from the observed time-scales. In the case of the hot branch of the ∑ — Te relation, the most reliable estimates (αhot) are based on the rate of decline following the dwarf nova outburst. From a comparison with model light curves calculated with different αs one gets: αhot ≈ 0.2(e.g. Smak 1984b). An independent, but much cruder, estimate can be obtained from the widths of normal outbursts, by assuming that the duration of an outburst represents the travel time of an instability wave across the disk. The result is similar: αhot ≈ 0.2 (Gicger 1987).

Type
Non-Magnetic Cataclysmic Variables
Information
International Astronomical Union Colloquium , Volume 158: Cataclysmic Variables and Related Objects , 1996 , pp. 45 - 46
Copyright
Copyright © Kluwer 1996

References

Brett, J.M., Smith, R.C., 1993, MNRAS, 264, 641 CrossRefGoogle Scholar
Cannizzo, J.K., 1993, in “Accretion Disks in Compact Stellar Systems”, ed. Wheeler, J.C., Singapore: World Scientific Publishing, p 6 CrossRefGoogle Scholar
Cannizzo, J.K., Shatter, A.W., Wheeler, J.C., 1988, Ap. J., 333, 227 Google Scholar
Echevarria, J., Diego, F., Tapia, M., et al., 1989, MNRAS, 240, 975 CrossRefGoogle Scholar
Gicger, A., 1987, Acta Astr., 37, 29 Google Scholar
Hameury, J.M., King, A.R., Lasota, J.-P. 1993, in “Accretion Disks in Compact Stellar Systems”, ed. Wheeler, J.C., Singapore: World Scientific Publishing, p 360 Google Scholar
Hessman, F.V., Robinson, E.L., Nather, R.E., Zhang, E.-H., 1984, Ap. J., 286, 747 Google Scholar
Hirose, M., Osaki, Y., 1990, PASJ, 42, 135 Google Scholar
Hirose, M., Osaki, Y., 1993, PASJ, 45, 595 Google Scholar
Howell, S.B., Szkody, P., Cannizzo, J.K., 1995, Ap. J., 439, 337 CrossRefGoogle Scholar
Huang, M., Sion, E.M., Szkody, P., 1995, AJ, 109, 1746 CrossRefGoogle Scholar
Ichikawa, S., Hirose, M., Osaki, Y., 1993, PASJ, 45, 243 Google Scholar
Livio, M., Spruit, H.C., 1991, A&A, 252, 189 Google Scholar
Lubow, S.H., 1994, Ap. J., 432, 224 CrossRefGoogle Scholar
Marsh, T.R., Horne, K., 1990, Ap. J., 349, 593 Google Scholar
Marsh, T.R., Horne, K., Cheng, F., 1993, in “Cataclysmic Variables and Related Physics”, eds Regev, O., Shaviv, G., Ann. Israel Phys. Soc., 10, 7 Google Scholar
Martin, J.S., Friend, M.T., Smith, R.C., Jones, D.H.P., 1989, MNRAS, 240, 519 Google Scholar
Mason, K.O., Cordova, F.A., Watson, M.G., King, A.R., 1988, MNRAS, 232, 779 Google Scholar
Meyer, F., Meyer-Hofmeister, E., 1983, A&A, 121, 29 Google Scholar
Mineshige, S., 1988, Ap. J., 335, 881 Google Scholar
Molnar, L., Kobulnicky, H.A., 1992, Ap. J., 392, 678 Google Scholar
O’Donoghue, D., 1986, MNRAS, 220, 23PGoogle Scholar
Osaki, Y., 1985, A&A, 144, 369 Google Scholar
Osaki, Y., 1989, PASJ, 41, 1005 Google Scholar
Osaki, Y., 1995, PASJ, 47, 47 Google Scholar
Osaki, Y., Hirose, M., Ichikawa, S., 1993, in “Accretion Disks in Compact Stellar Systems”, ed. Wheeler, J.C., Singapore: World Scientific Publishing, p 272 Google Scholar
Paczyński, B., 1965, Acta Astr., 15, 305 Google Scholar
Paczyński, B., Sienkiewicz, R., 1983, Ap. J., 268, 825 CrossRefGoogle Scholar
Sarna, M., 1990, A&A, 239, 163 Google Scholar
Smak, J., 1984a, Acta Astr., 34, 93 Google Scholar
Smak, J., 1984b, Acta Astr., 34, 161 Google Scholar
Smak, J., 1987, A&SS, 131, 497 Google Scholar
Smak, J., 1991, Acta Astr., 41, 269 Google Scholar
Smak, J., 1993, Acta Astr., 43, 101 Google Scholar
Smak, J., 1995, Acta Astr., 45, 355 Google Scholar
Sparks, W.M. 1996, private communicationGoogle Scholar
Sparks, W.M., Sion, E.M., Starrfield, S.G., Austin, S., 1993, in “Cataclysmic Variables and Related Physics”, eds Regev, O., Shaviv, G., Ann. Israel Phys. Soc., 10, 96 Google Scholar
Vogt, N., 1981, Ap. J., 252, 653 Google Scholar
Vogt, N., 1983, A&A, 118, 95 Google Scholar
Vogt, N., 1993, in “Cataclysmic Variables and Related Physics”, eds Regev, O., Shaviv, G., Ann. Israel Phys. Soc., 10, 63 Google Scholar
Warner, B., 1987, MNRAS, 227, 23 Google Scholar
Warner, B., 1995, Cataclysmic Variable Stars, Cambridge: Cambridge Univ. Press.Google Scholar
Warner, B., O’Donoghue, D., 1988, MNRAS, 233, 705 Google Scholar
Whitehurst, R., 1988, MNRAS, 232, 35 Google Scholar
Whitehurst, R., King, A.R., 1991, MNRAS, 249, 25 Google Scholar
Wolf, S., Mantel, K.H., Home, K., et al., 1993, A&A, 273, 160 Google Scholar
Wood, J.H., Marsh, T.R., Robinson, E.L., et al., 1989, MNRAS, 239, 809 CrossRefGoogle Scholar
Wood, J.H., Robinson, E.L., Bless, R.C., et al., 1993, in “Cataclysmic Variables and Related Physics”, eds Regev, O., Shaviv, G., Ann. Israel Phys. Soc., 10, 19 Google Scholar
Zola, S., 1989, Acta Astr., 39, 45 Google Scholar