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arxiv 1012.3408 v1 pith:RNIOBQAY submitted 2010-12-15 astro-ph.SR

Rapid Oscillations in Cataclysmic Variables. XVII. 1RXS J070407+262501

J. Patterson , J. R. Thorstensen , H. A. Sheets , J. Kemp , L. Vican , H. Uthas , D. Boyd , M. Potter
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T. Krajci T. Campbell G. Roberts D. Starkey B. Goff
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classification astro-ph.SR
keywords cataclysmiccurvesj070407lightperiodsignalappeardecreasing
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We present a study of the recently discovered intermediate polar 1RXS J070407+262501, distinctive for its large-amplitude pulsed signal at P = 480 s. Radial velocities indicate an orbital period of 0.1821(2) d, and the light curves suggest 0.18208(6) d. Time-series photometry shows a precise spin period of 480.6700(4) s, decreasing at a rate of 0.096(9) ms/yr, i.e. on a time scale P/P-dot =2.5 x 10^6 yr. The light curves also appear to show a mysterious signal at P = 0.263 d, which could possibly signify the presence of a "superhump" in this magnetic cataclysmic variable.

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