Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010atel.2581....1b&link_type=abstract
The Astronomer's Telegram, #2581
Astronomy and Astrophysics
Astronomy
Optical, Request For Observations, Agn, Quasars
Scientific paper
ON 231 (W Com) was one of the first radio sources classified as a BL Lac. It shows considerable variation in almost all energy regimes. We monitored it for linear Optical Polarization using 1.2m Telescope at Mt Abu IR Observatory, India, mounted with two-channel PRL Photo-Polarimeter. W Com showed interesting behavior in optical polarization during April 14-16, 2010. On April 14, linear polarization slowly increased from 7.4(+/-0.7)% to 9.7% during UT 19.5 to 21.0 and then dropped sharply to about 5.8% within half an hour.
Baliyan Kiran S.
Chandra Sharat
Ganesh Shashi
Joshi Umesh C.
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