Radio variations of β Persei and β Lyrae

Details Radio variations of β Persei and β Lyrae Radio variations of β Persei and β Lyrae

Mar 1972

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1972natur.236...43h&link_type=abstract

Nature Physical Science, Volume 236, #64, pp. 43-46 (1972).

Astronomy and Astrophysics

Astronomy

26

Scientific paper

We have reported1 recently the detection of radio emission from the eclipsing binary stars β Persei (Algol) and β Lyrae. No variation of the signal from β Lyrae was detected during the first observations, but the radiation of β Persei was clearly variable with flux densities up to 0.019 f.u. at 8,085 MHz. This communication describes further observations of these stars with the National Radio Astronomy Observatory interferometer between January 11 and February 16, 1972, on simultaneous frequencies of 2,695 and 8,085 MHz at element spacings of 900, 1,800 and 2,700 m. During this period β Persei behaved in a manner spectacularly different from that observed previously: its flux density at 8,085 MHz varied between 0.01 and 0.34 f.u. with a typical time scale of a few hours. The β Lyrae system faded to a level below the detection limit of the instrument, thereby proving that it is also a variable radio source.

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