No optical counterpart to the huge gamma-ray outburst of PKS 1510-089
ATel #3479; Rumen Bachev, Svetlana Boeva, Kiril Stoyanov, Evgeni Semkov (Institute of
on 8 Jul 2011; 12:07 UT
Credential Certification: E. Semkov (esemkov@astro.bas.bg)
Subjects: Optical, AGN, Blazar
We observed blazar PKS 1510-089 in optics, following the reported giant
outburst in gamma-rays (ATel #3473 and ATel #3470). The telescopes in use
were the 2m RCC telescope and the 60cm Cassegrain telescope of Rozhen NAO,
Bulgaria. Observed in R-band, the object showed rather typical values for
a minimal state, i.e. R=16.12 (July 06.84) and R=16.03 (July 07.80), see
also the results of Tuorla observatory monitoring,
http://users.utu.fi/kani/1m/PKS_1510-089.html
Although the gamma-ray outburst was observed 2-3 day ago, we conclude that
most probably the gamma-ray activity has no simultaneous optical
counterpart in this case.
