Very Strong Optical Flare from FSRQ S4 0954+658 Detected by ASAS-SN
ATel #7001; K. Z. Stanek, A. B. Danilet, T. W.-S. Holoien, C. S. Kochanek, G. Simonian, U. Basu, N. Goss, J. F. Beacom (Ohio State), B. J. Shappee (Hubble Fellow, Carnegie Obsrvatories), J. L. Prieto (Diego Portales; MAS), D. Bersier (LJMU), J. Brimacombe (Coral Towers Observatory), Subo Dong (KIAA-PKU), E. Falco (CfA), P. R. Wozniak (LANL), D. Szczygiel, G. Pojmanski (Warsaw University Observatory)
on 27 Jan 2015; 20:52 UT
Credential Certification: Krzysztof Stanek (stanek.32@osu.edu)
Flaring blazar FSRQ S4 0954+658 (e.g, ATel #6709, #6996) is in a field observed by the 14-cm ASAS-SN quadruple "Brutus" telescope with a 2-3 day cadence, typical for our all-sky survey. Over the last two epochs (UT 2015 January 26, 27) FSRQ S4 0954+658 underwent a dramatic brightening in V-band, by almost 2 magnitudes. This figure shows the ASAS-SN V-band photometry for this interesting object, spanning the last 30 days. In the last three epochs ASAS-SN measured the following V-band brightness
UT Date V
2015-01-23.45 16.50
2015-01-26.48 15.40
2015-01-27.49 14.75
with the last data point significantly brighter than any previous ASAS-SN measurement going back to January 2012.
We thank LCOGT and its staff for their continued support of ASAS-SN. ASAS-SN is supported in part by Mt. Cuba Astronomical Foundation. For more information about the ASAS-SN project, see the ASAS-SN Homepage