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X-Ray Observations Of Stellar Flares

Published online by Cambridge University Press:  12 April 2016

Bernhard M. Haisch
Bernhard M. Haisch*
Affiliation:
Lockheed Palo Alto Research Laboratory, Palo Alto, California, USA

Abstract

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The history of stellar X-ray flare observations prior to EINSTEIN is reviewed. X-ray light curves as measured by the IPC are then presented for all time resolved flare events discovered as of July 1982 in the EINSTEIN data set. These light curves are analyzed in terms of solar-like loop models to derive densities, temperatures, loop lengths, magnetic field strength lower limits, etc. The failure of the model to adequately represent the observations in the case of the YZ CMi flares is discussed. The relationship of X-ray to optical emission and X-ray to UV emission is considered from both an observational and a theoretical viewpoint. It is concluded that the characterization of a flare by a single, time averaged ratio, Lx /Lopt , is not physically significant.

Type
Session II: Observed Activity in Red-Dwarfs
Information
International Astronomical Union Colloquium , Volume 71: Activity in Red-Dwarf Stars , 1983 , pp. 255 - 272
Copyright
Copyright © Reidel 1983

References

REFERENCES

Acton, L.W., et al.: 1982, Ap.J., in press.Google Scholar
Agrawal, P.C., Rao, A.R. and Sreekantan, B.V.: 1983, Ap.J., submitted.Google Scholar
Antonucci, E., et al.: 1982, Solar Phys., 78, p. 107.Google Scholar
Caillault, J.-P., Helfand, D.J. and Ku, W.: 1981, BAAS, 13, p. 811.Google Scholar
Cram, L.E. and Woods, D.T.: 1982, Ap. J., 257, p. 269.Google Scholar
Golub, L.: 1982, private communication.Google Scholar
Haisch, B.M., et al.: 1977, Ap.J. (Letters), 213, p. L119.Google Scholar
Haisch, B.M., et al.: 1978, Ap.J. (Letters), 225, p. L35.Google Scholar
Haisch, B.M., et al.: 1980, Ap.J. (Letters), 242, p. L99.Google Scholar
Haiech, B.M., et al.: 1981, Ap.J., 245, p. 1009.Google Scholar
Haisch, B.M., et al.: 1983, Ap.J., submitted.Google Scholar
Haisch, B.M.and Linsky, J.L.: 1980, Ap.J. (Letters), 236, p. L33.Google Scholar
Haisch, B.M. and Simon, T.: 1982, Ap.J., to appear in Dec. 1 issue.Google Scholar
Heise, J., et al.: 1975, Ap.J. (Letters), 202, p. L73.Google Scholar
Johnson, H.M.: 1981, Ap.J., 243, p. 234.Google Scholar
Kahler, S., et al.: 1982, Ap.J., 252, p. 239.Google Scholar
Kahn, S.M., et al.: 1979, Ap.J. (Letters), 234, p. L107.Google Scholar
Karpen, J.T., et al.: 1977, Ap.J., 216, p. 479.Google Scholar
Kunkel, W.E.: 1975, in IAU Symp. No. 67, Variable Stars and Stellar Evolution, ed. Sherwood, V.E. and Plaut, L. (Dordrecht: Reidei), p. 67.Google Scholar
Mewe, R. and Gronenschild, E.H.B.M.: 1981, Astr. Ap. Supp., 45, p. 11.Google Scholar
McClure, R.D.: 1982, Ap.J., 254, p. 606.Google Scholar
Mochnacki, S.W. and Zirin, H.: 1980, Ap.J. (Letters), 239, p. L27.Google Scholar
Mullan, D.J.: 1976, Ap.J., 207, p. 289.Google Scholar
Moore, R., et al.: 1980, in Solar Flares, ed. Sturrock, P.A. (Boulder: Colorado Associated University Press), p. 341.Google Scholar
Pettersen, B.R.: 1976, Catalogue of Flare Star Data, Inst, of Theoretical Astrophysics, Oslo, Rept. No. 46.Google Scholar
Pettersen, B.R.: 1980, Astr. Ap., 82, p. 53.Google Scholar
Raymond, J.C., Cox, D.P. and Smith, B.W.: 1976, Ap.J., 204, p. 290.Google Scholar
Rosner, R., Tucker, W.H. and Vaiana, G.S.: 1978, Ap.J., 220, p. 643.Google Scholar
Stern, R.A., Underwood, J.H. and Antiochos, S.K.: 1981, in Proc. Sec. Cambridge Workshop on Cool Stars, Stellar Systems and the Sun, ed. Giampapa, and Golub, L., SAO Rept. No. 392.Google Scholar
Stern, R.A. and Zolcinski, M.-C: 1982, private communication.Google Scholar
Stern, R.A., Underwood, J.H. and Antiochos, S.K.: 1982, Ap.J. (Letters), submitted.Google Scholar
Walke, D.G.: 1979, Ap.J. (Letters), 234, p. L205.Google Scholar
Zirin, H., Feldman, U., Doschek, G.A. and Kane, S.: 1981, Ap.J., 246, p. 321.Google Scholar