Infrared observations of the 3C 273 jet

Details Infrared observations of the 3C 273 jet Infrared observations of the 3C 273 jet

May 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...280...98h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 280, May 1, 1984, p. 98-101. Research supported by the U.S. National Resear

Astronomy and Astrophysics

Astronomy

16

Galactic Radiation, Infrared Astronomy, Plasma Jets, Quasars, Radio Sources (Astronomy), Emission Spectra, Synchrotron Radiation

Scientific paper

The first infrared (1.25 micron and 2.2 micron) observations of the jet in the quasar 3C 273 are reported. The present data, when combined with previous observations, show that the optical-infrared spectrum is a power law with index approximately equal to that in the radio, but lies a factor of 5 below the extrapolation from the radio. Various emission mechanisms for the optical-infrared jet are discussed, and it is concluded that synchrotron radiation is the most likely. However, the spectra of different parts of the jet are not the same; the radio-infrared index of the inner half is significantly larger (i.e., softer spectrum) than that of the outer half of the jet.

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