[vsnet-alert 9873] 3C454.3 bright
ohshima at kusastro.kyoto-u.ac.jp
Fri Feb 1 15:58:45 JST 2008
According to Higashi-Hiroshima Observatory, the quasor, 3C454.3
(z=0.859) is bright. Though this object is usually around 15th
mag, they observed this object at 13.7 mag on 31th of Jan.
This object is undergoing outbursts in 2005 Apr. and 2007 Jul.
Particularly, in the outburst of 2005, this object brightened
to 11th mag. The variations in longer span is showed by Villata
et al. (A&A 453,817), this object appears to be more active in
2000s than before decades.
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