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Optical and IR flare of blazar PKS B 1730-130 (NRAO 530)

ATEL # 2764; E. Bonning, C. Bailyn, M. Buxton, R. Chatterjee, P. Coppi, J. Isler, C. M. Urry (Yale), L. Maraschi (INAF/Brera), G. Fossati (Rice)
on 30 Jul 2010; 15:38 UT
Password Certification: Erin Bonning (

Subjects: Infra-Red, Optical, AGN, Black Holes, Quasars

We are conducting a long-term monitoring campaign of the optical and near-IR magnitudes of gamma-ray bright blazars using the SMARTS 1.3m telescope and ANDICAM instrument. We report that optical and near infrared observations of the blazar PKS B 1730-130 show that the source is currently increasing in flux, reaching B=18.85, V=17.65, R=16.83, J=14.66, K=12.45 on UT 2010 July 25. From UT 2010 July 08, the change in magnitude is dB=0.50, dV=0.71, dR=0.81, dJ=0.67, dK=0.94. Typical errors for our differential photometry are 0.02 magnitudes in the optical and 0.05 magnitudes in the IR.

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