2 9 Fe b 20 08 Time-Resolved Photometry of the Optical Counterpart of Swift J 2319 . 4 + 2619

Abstract

Time-resolved CCD photometry is presented of the V ∼ 17 optical counterpart of the newly-discovered, hard-X-ray-emitting polar Swift J2619.4+2619. A total of ∼20 hr of data obtained over five nights in various bandpasses (B, V, R, and I) reveals a strong quasi-sinusoidal modulation in the light curve at a best-fitting period of 0.1254 d (3.01 hr), which we… (More)

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