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arXiv · 0804.3946

The serendipituous discovery of a short-period eclipsing polar in 2XMMp

J. Vogel·K. Byckling·A. Schwope·J. P. Osborne·R. Schwarz·M. G. Watson
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Abstract

We report the serendipituous discovery of the new eclipsing polar 2XMMp J131223.4+173659. Its striking X-ray light curve attracted immediate interest when we were visually inspecting the source products of the 2XMMp catalogue. This light curve revealed its likely nature as a magnetic cataclysmic variable of AM Herculis (or polar) type with an orbital period of ~92 min, which was confirmed by follow-up optical spectroscopy and photometry. 2XMMp J131223.4+173659 probably has a one-pole accretion geometry. It joins the group of now nine objects that show no evidence of a soft component in their X-ray spectra despite being in a high accretion state, thus escaping ROSAT/EUVE detection. We discuss the likely accretion scenario, the system parameters, and the spectral energy distribution.

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J. Vogel, K. Byckling, A. Schwope, J. P. Osborne, R. Schwarz, M. G. Watson. 2008-04-24. The serendipituous discovery of a short-period eclipsing polar in 2XMMp. https://doi.org/10.1051/0004-6361:20079341

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