Detection of the AM HER type cataclysmic variable V834 CEN at radio wavelengths

Astronomy and Astrophysics – Astronomy

Scientific paper

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Binary Stars, Cataclysmic Variables, Radio Sources (Astronomy), Stellar Radiation, Centimeter Waves, Flux Density, Interstellar Masers, Red Dwarf Stars, White Dwarf Stars

Scientific paper

The authors report the first detection of the AM Her type cataclysmic variable system V834 Cen at 8.4 GHz, making it the second AM Her system to be detected at radio wavelengths. The radio emission is variable on time-scales as short as 1 min and reaches peak flux densities of 35 mJy. Longer time-scale variations of order tens of minutes and levels of 12 mJy may be correlated with binary phase. The emission mechanism is probably an electron-cyclotron maser.

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