Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...431..836c&link_type=abstract
The Astrophysical Journal, vol. 431, no. 2, pt. 1, p. 836-843
Astronomy and Astrophysics
Astronomy
3
Doppler Effect, Radial Velocity, Radio Jets (Astronomy), Stochastic Processes, Astronomical Spectroscopy, Cosmology, Distribution Functions, Kinematics, Time Dependence
Scientific paper
In this paper we analyze the residuals resulting from the comparison of several models with radial velocity data for the jets of SS 433. We find no compelling evidence for random variations in orientation or speed of the relativistic jets commonly known as 'jitter.' Earlier determinations of the presence of 'jitter' can be traced to the incomplete modeling of the nodding motion of the jets. Such motion results from the time-dependent torques originating with the motion of the companion. While it is likely that such "jitter" exists, its presence is below the detectable limit of contemporary analysis. We conclude that at the present time even the best models for the motions of SS 433 appear to be incomplete on timescales exceeding a few years. Detection of the jitter will require an improvement in both the volume of data available for analysis as well as improvements in the models for the motion of the jets.
Collins George W. II
Garasi Christopher J.
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