Now showing items 1-8 of 8
Polarimetry and photometry of the new AM Herculis system RE J1844-741
The ROSAT Wide Field Camera extreme-ultraviolet (EUV) source RE J1844-741 was identified with a 16th-magnitude cataclysmic variable with a period of 90 min by O'Donoghue et al. In this paper, we present spectropolarimetry ...
Discovery of another Am-Herculis Variable in the Period Gap
Recently, Buckley et al. drew attention to a new AM Her variable, RE1938 - , discovered by the ROSAT survey with a period of 2.33 h which places it in the middle of the usual 2-3 h period gap for cataclysmic variables. ...
Detection of photospheric Zeeman features and cyclotron emission lines in V834 CEN in a low state
Simultaneous spectroscopic and polarimetric observations of the AM Herculis system V834 Cen during a low state of accretion are reported. The polarization data show a reversal in the sign of the circular polarization when ...
Polarimetry of ST LMi - Discovery of a second accreting pole
We have obtained simultaneous multiband photometric and polarimetric light curves for ST LMi (CW1103 + 254) in the visible range and the near-infrared on three occasions. These clearly show the presence of previously ...
New polarimetric observations and a 2 pole model for the cyclotron emission from AM Herculis
High signal-to-noise ratio phase dependent linear polarization and intensity data on AM Herculis which show the presence of structured linear pulses in the optical and near IR regions is presented. The data have been ...