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Past optical (in)activity of MAXI J0556-332

ATel #3328; A. A. Mahabal, A. J. Drake, S. G. Djorgovski, M. J. Graham, R. Williams, C. Donalek (Caltech); J. Prieto (OCIW); M. Catelan (PUC); E. Christensen (Gemini Observatory); E. C. Beshore, S. M. Larson (LPL/UA); V. Mohan (IUCAA)
on 6 May 2011; 01:36 UT
Credential Certification: Ashish Mahabal (aam@astro.caltech.edu)

Subjects: Optical, X-ray, Transient

Referred to by ATel #: 4524

The transient MAXI J0556-332 reported in ATels #3102 (Matsumara et al.), #3327 (Maitra et al.) etc. was automatically detected by the CRTS in the optical (SSS110126:055646-331027 - see http://nesssi.cacr.caltech.edu/SSS/20110126/1101260330384121960p.html for the lightcurve) a few days after its discovery by MAXI/GSC in X-ray. Looking back at the optical lightcurve, we notice that it had not started optically brightening at least until 8 Jan 2011, and did not have a detected outburst since Aug 2005. CRTS will continue to add points to the lightcurve. All CRTS discoveries are available from http://crts.caltech.edu/ and http://www.skyalert.org/.