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X-ray Observations of the dMe Star EQ1839.6+8002 in 1980-1993

Published online by Cambridge University Press:  12 April 2016

H.C. Pan ,
C. Jordan ,
K. Makishima ,
R.A. Stern ,
K. Hayashida  and
M. Inda-Koide
H.C. Pan
Affiliation:
Department of Physics (Theoretical Physics), University of Oxford, UK
C. Jordan
Affiliation:
Department of Physics (Theoretical Physics), University of Oxford, UK
K. Makishima
Affiliation:
Department of Physics, University of Tokyo, Japan
R.A. Stern
Affiliation:
Lockheed Palo Alto Research Laboratory, USA
K. Hayashida
Affiliation:
Department of Earth and Space Science, Osaka University, Japan
M. Inda-Koide
Affiliation:
Department of Electronics and Information, Toyama University, Japan

Extract

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During Ginga observations of galaxy 3C390.3 on 1991 February 14, a large impulsive flare was detected between 22:30-23:00 UT (Inda et al. 1994). Inda et al. (1994) suggested that the flare was associated with EQ1839.6+8002, an M4Ve star at a distance of 15.2 pc (Fleming et al. 1988). The star has been observed previously with the Einstein IPC and EXOSAT LE (Gioia et al. 1990; Grommi et al. 1991), and more recently with the ROSAT PSPC.

In this paper we present the results of an analysis of the observations of EQ1839.6+8002 with Ginga and of the data obtained with the Einstein IPC (between 1980 January and May), the EXOSAT LE (in 1984-1986), and the ROSAT PSPC instruments (in 1991 March, 1992 April and 1993 April).

Type
Flares in Late-type Stars: UV and X-ray
Information
International Astronomical Union Colloquium , Volume 151: Flares and Flashes , 1995 , pp. 171 - 174
Copyright
Copyright © Springer-Verlag 1995

References

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