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Continued Analysis of EUVE and Optical Observations of a Flare on AD Leonis

Published online by Cambridge University Press:  12 April 2016

S.L. Cully
Affiliation:
Experimental Astrophysics Group, Space Sciences Laboratory, University of California, Berkeley CA 94720USA Center for Extreme Ultraviolet Astrophysics, 2150 Kittredge Street, University of California, Berkeley, CA 94720-5030, USA
G.H. Fisher,
Affiliation:
Experimental Astrophysics Group, Space Sciences Laboratory, University of California, Berkeley CA 94720USA
S.L. Hawley,
Affiliation:
Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA
T. Simon
Affiliation:
Institute for Astronomy, University of Hawaii, 2680 Woodlawn Dr., Honolulu, HI 96822, USA

Abstract

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The flare star AD Leo (dM3.5e, 4.9 pc) was observed by EUVE from 1993 March 1-March 3 UT. A flare was detected by the EUVE DS/S and seen in optical photometry on 1993 March 2 UT. We summarize an analysis of the flare’s physical parameters, and present differential emission measure (DEM) curves calculated for the quiescent, flare peak and flare decay phases of the observation.

Type
III. Coronae of Cool Stars
Copyright
Copyright © Kluwer 1996

References

Craig, I.J.D. & Brown, J.C., eds. 1986, Inverse problems in astronomy: A guide to inversion strategies for remotely sensed data, Bristol: Adam Hilger Ltd. Google Scholar
Cully, S.L. et al. 1995, EUVE spectral observations of a flare on AD Leonis, in preparationCrossRefGoogle Scholar
Dennis, B.R. & Zarro, D.M. 1993, The Neupert effect—What it can tell us about the impulsive and gradual phases of solar flares, Sol. Phys., 146, 177 Google Scholar
Fisher, G.H. & Hawley, S.L. 1990, An equation for the evolution of solar and stellar Flare Loops, ApJ, 357, 243 Google Scholar
Hawley, S.L., et al. 1995, Simultaneous EUVE and optical observations of AD Leonis: Evidence for large coronal loops and the Neupert effect in stellar flares, ApJ, in pressCrossRefGoogle Scholar
Monsignori Fossi, B.C. & Landini, M. 1994, The X-Ray-EUV Spectrum of Optically Thin Plasmas, Solar Phys., 152, 81 Google Scholar
Mewe, R., et al. 1995, EUV spectroscopy of cool stars: 1. The corona of Alpha Centauri observed with EUVE, A&A, 296, 477 Google Scholar
Neupert, W.M. 1968, Comparison of Solar X-ray line emission with microwave emission during flares, ApJ, 153, L59 Google Scholar
Naftilan, S.A., Sandmann, W.S. & Pettersen, B.R. 1992, The spectrum of the dwarf Me flare star AD Leonis, PASP, 104, 1045 Google Scholar