ROSAT observations of quasar 3C 273

Details ROSAT observations of quasar 3C 273 ROSAT observations of quasar 3C 273

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992phdt.........2o&link_type=abstract

Thesis Tuebingen Univ. (Germany). Astronomisches Inst.

Astronomy and Astrophysics

Astronomy

Quasars, Radio Jets (Astronomy), Red Shift, Rosat Mission, X Ray Telescopes, Active Galactic Nuclei, Black Holes (Astronomy), Hydrogen, Maximum Likelihood Estimates, Photons, Proportional Counters, Radial Velocity, Radio Emission, Stellar Magnitude

Scientific paper

Three Rosat observations of the quasar 3C 273 environment are reported. The Rosat satellite is described, as well as observation instruments such as the x-ray telescope and its subsystems: x-ray mirror assembly, positive proportional sensitive counter and high resolution imagers, and wide field camera. The Extended Scientific Analysis System (EXSAS) was used for data reduction. The EXSAS is a software packet developed for Rosat. A source detection algorithm was applied to measured data. Variability behavior of 3C 273 was studied, and light curves were obtained. The curves show no periodicity of intensity oscillations after Fourier analysis. Low x-ray spectra were examined and modeled by a simple potential law. Radio-interferometric observations with a very long base interferometer allow the jet to be studied with high resolution and a superluminal motion to be discovered.

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