EF Eridani in the low state

The polar EF Eridani (2A 0311227) was once one of the brightest soft Xraysources in the sky. For the past decade it has been in an extended inactivestate (with the exception of occasional short burps). We seek to study theresidual Xray activity in this system. The data suggest that the residualoptical activity occurs either on the irradiated surface of the substellar masscompanion or in a coupling region where the secondary.s wind and/or its magneticfield interacts with the megaGauss field of the white dwarf. Xray observationswill provide important clues to the magnetic geometry of polars, and the physicsof the coupling region. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]