Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981natur.294..319s&link_type=abstract
Nature, vol. 294, Nov. 26, 1981, p. 319-322. NASA-NSF-supported research.
Astronomy and Astrophysics
Astronomy
39
Astronomical Models, Elliptical Galaxies, Infrared Astronomy, Plasma Jets, Radio Astronomy, Radio Sources (Astronomy), Compton Effect, Electron Distribution, Galactic Nuclei, Spectrophotometry, Spectrum Analysis, Synchrotron Radiation
Scientific paper
New observations at 1.6-3.45 microns confirm the presence of a dramatic (change in spectral index of approximately 1) break between radio-IR wavelengths and 6,000 A in the spectrum of the M87 jet. These data, in combination with data taken in other spectral regions, show that the individual knots in the M87 jet have nearly the same spectral indices and nearly the same large (change in spectral index of approximately 1) spectral break. This large spectral break and the constancy of spectral properties between the knots pose serious constraints for models of the M87 jet.
Lebofsky Marcia J.
Rieke George H.
Stocke John T.
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