First detection of radio emission from a dwarf nova

Details First detection of radio emission from a dwarf nova First detection of radio emission from a dwarf nova

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983natur.302...45b&link_type=abstract

Nature, vol. 302, Mar. 3, 1983, p. 45, 46.

Astronomy and Astrophysics

Astronomy

10

Dwarf Novae, Radio Astronomy, Radio Emission, Flux (Rate), Masers, Synchrotron Radiation

Scientific paper

The detection of 4.75 GHz radio emissions from a white dwarf star in SU UMa is reported, and the source of the emission is discussed. The emission was discovered during a survey of six dwarf stars with a double horn receiver system. SU UMa was successfully scanned 123 times, with each scan comprising 31 3-sec integrations 30 arcsec apart. Average fluxes for each beam position were calculated, as was the X ray emission of 7.6 x 10 to the 54th/cu cm in the 0.1-4.5 keV band. The small mass outflow projected for the object indicates a source of suprathermal electrons for the radio emissions A cyclotron maser instability is suggested as the mechanism, and future measurements to detect circular polarization as proof of a coherent source are indicated.

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