Other
Scientific paper
Feb 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...220...25e&link_type=abstract
Astrophysical Journal, Part 1, vol. 220, Feb. 15, 1978, p. 25-41. Research supported by the John Simon Guggenheim Memorial Foun
Other
100
Extragalactic Radio Sources, Galactic Radiation, Millimeter Waves, Quasars, Astronomical Photometry, Bolometers, Carbon Monoxide, Nonthermal Radiation, Radiation Spectra, Synchrotron Radiation
Scientific paper
Continuum observations of 23 extragalactic objects have been made at a wavelength of 1 mm; nine of the 23 have been definitely detected at this wavelength. The sources detected include seven from which the 1-mm emission appears to be nonthermal, and two from which the emission appears to be thermal radiation from dust. Repeated observations of the brightest nonthermal sources permitted a search for 1-mm variations on time scales of one month to three years. BL Lac was observed to vary by more than a factor of 2 in flux, and 3C 84, 3C 120, and 3C 273 showed possible variations; 3C 279 showed no variations greater than + or - 30%. The 1-mm variations of BL Lac appear to be correlated with variations at radio wavelengths. The other sources with nonthermal spectra detected were 3C 111 and M87; the two thermal sources detected were NGC 253 and M82. Comparison of the latter two 1-mm measurements with 2.6-mm CO measurements suggests that the CO line in these galaxies is not heavily saturated.
Elias Johnathan H.
Ennis David James
Gezari Daniel Ysa
Hauser Michael G.
Houck James R.
No associations
LandOfFree
1 millimeter continuum observations of extragalactic objects does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with 1 millimeter continuum observations of extragalactic objects, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 1 millimeter continuum observations of extragalactic objects will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1034303