[vsnet-alert 342] possible start of outburst of GK Per

[Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>]

    According to the report (vsnet-obs 2211) of J. Mc Kenna (AAVSO),
the old nova GK Per may be undergoing one of its minor outbursts since
its last one in 1992 July.  This old nova (and also known as an intermediate
polar) recently shows these presumably dwarf nova-type outbursts every ~3
years.  The present outburst (if confirmed) may provide an opportunity
in probing this "excellent laboratory of magnetic accretion".

    1996 Feb. 26.054 UT  mv=12.4  J. Mc Kenna

Some selected litertures:
  * on short-term oscillations (QPOs, intermediate polar):
    J. Patterson 1991, PASP 103, 1149 (optical)
    M. Ishida et al. 1992, MNRAS 254, 647 (X-ray)

  * on minor brightenings:
    A. Bianchini et al. 1986, A&A 160, 367 (analysis of light curve)
    S. -W. Kim et al. 1992, ApJ 384, 269 (dwarf nova-type model)

    We would like to be providing updated information of this phenomenon
through the VSNET home page (http://vsnet.kusastro.kyoto-u.ac.jp/vsnet)
and anonymous ftp (http://ftp.kusastro.kyoto-u.ac.jp/pub/vsnet/Novae/GK_Per).

Regards,
Taichi Kato (VSNET sub-manager)

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