HS0922+1333


This is another member of the so-called Low Accretion Rate Polars, similar to HS1023+3900, characterized by an almost pure cyclotron emission spectrum. This object has not been seen in the X-rays, indicating a very low mass transfer rate. More recently, people started to wonder whether this is a polar, or rather a pre-polar in which the white dwarf is accreting not through Roche-lobe overflow, but from the wind of the still detached donor star. Monitoring is extremely important, as the detection of a real high state would clearly rule out that second possibility.
finding chart


Literature
Reimers, D., Hagen, H.-J., 2000. HS0922+1333: another low accretion rate polar with a pronounced cyclotron line spectrum, A&A 358L, 45

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