RX J0944.5+0357: A Probable Intermediate Polar

From optical photometry the cataclysmic variable RX J0944.5+0357 is shown to have a double-peaked pulse profile with a period ∼ 2160 s. The two peaks vary rapidly in relative amplitude. Often most of the optical power is concentrated in the first harmonic of the 2160 s modulation; RX J0944.5+0357therefore probably belongs to the relatively rare class of two-pole accreting intermediate polars exemplified by YY Dra and V405 Aur. This revised version was published online in July 2006 with corrections to the Cover Date.