Optical and near infrared monitoring of the black-hole x-ray binary GX 339-4 during 2002-2010
Buxton, Michelle M. and Bailyn, Charles D. and Capelo, H. and Chatterjee, R. and Dinçer, Tolga and Kalemci, Emrah and Tomsick, John A. (2011) Optical and near infrared monitoring of the black-hole x-ray binary GX 339-4 during 2002-2010. (Submitted)
We present the optical/infra-red lightcurve of the black hole X-ray binary GX 339-4 collected at the SMARTS 1.3m telescope over the past nine years. During this time, the source has undergone numerous state transitions. We show that the O/IR colors follow two distinct tracks, which reflect the X-ray state of the source. Thus the X-ray behavior can be accurately inferred from O/IR observations alone. We attempt to decompose the O/IR flux into components associated with the companion star, accretion disk, and jet. The complexity of the system, and undersampling of the spectral energy distribution, make an unambiguous decomposition difficult. We urge caution in fitting simple, one- component flux models to the O/IR flux from this source. We have conducted a timing analysis of the light curve for the hard and soft states and find no evidence of a specific timescale within the range of 4-230 days.
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