High-resolution observations of compact radio sources at 1.35-cm wavelength

Details High-resolution observations of compact radio sources at 1.35-cm wavelength High-resolution observations of compact radio sources at 1.35-cm wavelength

Feb 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978pazh....4...64p&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 4, Feb. 1978, p. 64-69.) Soviet Astronomy Letters, vol. 4, Jan.-Feb. 1978, p. 32-35. Tr

Astronomy and Astrophysics

Astronomy

5

Angular Resolution, Brightness Temperature, Radio Sources (Astronomy), Fine Structure, High Resolution

Scientific paper

Results are presented for 1.35-cm (22.2-GHz) observations of the compact radio sources NRAO 150, 3C 84, 3C 345, and 3C 273, which were performed using a series of interferometers with baselines up to 550 million wavelengths long. Brightness distribution models for the sources are obtained by numerical approximation of the visibility-function amplitude measurements via an iterative least-squares procedure. The amplitudes of the interference fringes are plotted for each source as observed and as computed from the models. The results indicate that: (1) strong radiation is emitted from components less than 0.0002 arcsec across in NRAO 150, 3C 273, and 3C 345; (2) the brightness temperature in these sources is of the order of 1 trillion K, which is comparable to that determined by inverse Compton losses; (3) the brightness temperature in 3C 84 reaches a peak value of 100 billion K at the center of the source; and (4) the emission regions in 3C 84 are expanding.

Affiliated with

Also associated with

No associations

Rating

High-resolution observations of compact radio sources at 1.35-cm wavelength 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 High-resolution observations of compact radio sources at 1.35-cm wavelength, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-resolution observations of compact radio sources at 1.35-cm wavelength will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1036172