Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001stin...0246979m&link_type=abstract
Technical Report, Boston Univ. Boston, MA United States
Astronomy and Astrophysics
Astronomy
Active Galactic Nuclei, Ejection, Radio Galaxies, X Rays, X Ray Astronomy, Black Holes (Astronomy), X Ray Timing Explorer
Scientific paper
We compare the RXTE X-ray light curve of 3C 120 from our late 1997 to early 2000 observations, plus early 1997 archival data, with both the cm-wave light curves (University of Michigan Radio Astronomy Observatory) and the times of ejections of apparent superluminal components (from VLBA observations). There is no correlation between the X-ray and radio light curves. However, the epochs of all four observed superluminal ejections correspond, to within the errors, with pronounced dips in the X-ray light curves (photon energies in the range 2-20 keV). This behavior is similar to that of the binary-system 'microquasar' GRS1915+105 in the Milky Way galaxy, although in 3C 120 there is no evidence for rapid, quasi-periodic fluctuations in X-ray flux. These observations therefore support the notion that in active galactic nuclei eruptions of energetic outflow are related to excess accretion onto a supermassive black hole.
Aller Margo F.
Gomez Jos'e L.
Jorstad Svetlana G.
Marscher Alan P.
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