Quiescent radio emission in UX ARIETIS

Details Quiescent radio emission in UX ARIETIS Quiescent radio emission in UX ARIETIS

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...253..403m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 253, no. 2, Jan. 1992, p. 403-406.

Astronomy and Astrophysics

Astrophysics

20

Binary Stars, Radio Emission, Stellar Flares, Stellar Radiation, Spectral Energy Distribution, Very Long Base Interferometry

Scientific paper

Multifrequency observations of the quiescent radio emission of UX Arietis performed with the 100-m radio telescope of Effelsberg are reported. The derived spectral index implies that besides the flaring emission, also the quiescent one is due to electrons with a power-law energy distribution. A lower limit estimate of the lifetime of the quiescent emission imposes the following constraints on magnetic field and thermal electron density: B not greater than 30 G, Ne less than 4 x 10 exp 7/cu cm. The present data are insufficient to distinguish if the emitting electrons are produced during a flare or if a continuous injection of particles must be invoked.

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