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X-Ray Observations of M32 with ASCA

Published online by Cambridge University Press:  25 May 2016

T. Toneri ,
K. Hayashida  and
M. Loewenstein
T. Toneri
Affiliation:
Department of Earth and Space Science, Osaka University 1-1 Machikaneyama-cho, Toyonaka, Osaka 560, JAPAN
K. Hayashida
Affiliation:
Department of Earth and Space Science, Osaka University 1-1 Machikaneyama-cho, Toyonaka, Osaka 560, JAPAN
M. Loewenstein
Affiliation:
Laboratory for High Energy Astrophysics Goddard Space Flight Center, Greenbelt, MD 20771, USA

Extract

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M32 is the nearest dwarf elliptical galaxy. Its center is known to have a mass concentration of 3 × 106 M⊙, which is usually interpreted as an evidence of a super massive black hole. We observed M32 with ASCA two times in July and August of 1996. An X-ray source was detected at the center of M32 and its first broad-band X-ray spectra were obtained. ASCA observations of M32 limit the activity of the central black hole to be less than 10−6 times of the Eddington limit. We also found two other bright sources within 12 arcmin from the M32 center. One is the newly appeared X-ray source and the other is G144. In this paper, we summarize the results on the new source and G144. For M32, please refer to the publication (Loewenstein et al. 1997).

Type
Session 1: Plasma and Fresh Nucleosynthesis Phenomena
Information
Symposium - International Astronomical Union , Volume 188: The Hot Universe , 1998 , pp. 291 - 292
Copyright
Copyright © Kluwer 1998 

References

Loewenstein, M., Hayashida, K., Toneri, T. and Davis, D.S. (1997) ApJ , submitted Google Scholar
Eskridge, P.B., White, R.E., III, , and Davis, D.S. (1996) ApJ , 463, L59 Google Scholar
van der Marel, R.P., de Zeeuw, P.T., Rix, H.W. & Quinaln, G.D. (1997) Nature , 385, 610 Google Scholar
Battistini, P., Bònoli, F., Braccesi, A., Fusi Pecci, F., Malagnini, M.L. and Marano, B. (1980) A&AS , 42, 357 Google Scholar