Optical Afterglow of the Hard X-ray Flare in the Symbiotic Star CH Cygni

Details Optical Afterglow of the Hard X-ray Flare in the Symbiotic Star CH Cygni Optical Afterglow of the Hard X-ray Flare in the Symbiotic Star CH Cygni

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009atel.2192....1s&link_type=abstract

The Astronomer's Telegram, #2192

Astronomy and Astrophysics

Astronomy

1

Optical, X-Ray, Binaries, Variables

Scientific paper

We report on the recent optical photometric and spectroscopic signatures of the hard X-ray recovery of the symbiotic system CH Cyg (see ATEL #2046). Our UBVR_C photometry taken at the observatories of the Astronomical Institute of the Slovak Academy of Sciences showed that CH Cyg started a gradual brightening in the U photometric passband from 2008 October (U ~ 11.9) to the present. During our last observation from 2009 September 7 it was seen at U = 10.82.

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