Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...163...77b&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 163, no. 1-2, July 1986, p. 77-82.
Astronomy and Astrophysics
Astronomy
4
Black Holes (Astronomy), Coherent Radiation, Pulsars, Radio Sources (Astronomy), X Ray Sources, Accretion Disks, Autocorrelation, Brightness Temperature, Cross Correlation, Error Analysis
Scientific paper
A 0.15 Jy component of the 408 MHz flux density from SS 433 shows a correlation time of less than 16 s and a modulation by the 162-day precessional period of the compact object. Both phenomena indicate a rather small dimension and a very high brightness temperature for the component, a temperature well outside the allowed range for noncoherent radiators. The modulation by the 162-day precessional period suggests the radiator is located in the very center of the compact object accretion disk. A straightforward explanation of the modulation mechanism has not, however, been found. Although it appears that no pulsed radiation has been detected from SS 433, the possibility that the radiation mechanism in this component is strictly related to those operating in classical pulsars is very strong.
Bonsignori-Facondi S. R.
Braccesi A.
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