11.1- and 3.7-cm variations in the flux density of SS 433

Details 11.1- and 3.7-cm variations in the flux density of SS 433 11.1- and 3.7-cm variations in the flux density of SS 433

Sep 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981aj.....86.1377j&link_type=abstract

Astronomical Journal, vol. 86, Sept. 1981, p. 1377-1383.

Astronomy and Astrophysics

Astronomy

19

Binary Stars, Microwave Emission, Peculiar Stars, Radiant Flux Density, Radio Stars, Stellar Radiation, Cosmic Plasma, Electron Energy, Energy Dissipation, Energy Distribution, Flare Stars, Plasma Radiation, Power Spectra, Radio Spectra, Stellar Mass Ejection, Synchrotron Radiation, Very Long Base Interferometry

Scientific paper

The peculiar galactic object SS 433 has been observed at radio wavelengths of 11.1 and 3.7 cm from JD 2444067 until JD 2444487. These observations (with a baseline of 2.4 km) show that the radio radiation displays (1) a quiescent phase in which there is little change in the radio flux density and (2) an active flaring phase in which the radio flux density varies by 30-100% in an interval of one to five days. No dominant periodicities are present in the data, although over short periods (approximately 100 days) there may be some weak correlations. The exponent of the electron energy distribution is found to be 1.2 for both the flaring and nonflaring plasma under the assumption that energy losses due to synchrotron radiation in the nonflaring plasma are balanced by continuous injection of energetic particles. The variations in the radio flux density of SS 433 may be caused by variations in the mass-loss rate of the binary system.

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