Very Large Array observations of coronal loops at 20 centimeter wavelength

Details Very Large Array observations of coronal loops at 20 centimeter wavelength Very Large Array observations of coronal loops at 20 centimeter wavelength

Jul 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...258..384l&link_type=abstract

Astrophysical Journal, Part 1, vol. 258, July 1, 1982, p. 384-387.

Astronomy and Astrophysics

Astronomy

35

Coronal Loops, Radio Astronomy, Solar Magnetic Field, Solar Radio Emission, Very Large Array (Vla), Bremsstrahlung, Circular Polarization, Interferometry, Photosphere, Solar X-Rays

Scientific paper

Observations made by the Very Large Array of nonflaring loop-like structures in the solar corona at a wavelength of 20 cm and angular resolution of 3.7 x 5 arcsec are reported. The loop-like structures are shown to join regions of opposite magnetic polarity as seen on magnetograms of the longitudinal component of the photosphere magnetic field. No detectable circular polarization is found, suggesting that the 20-cm loops are optically thick and that the brightness temperatures are equal to the electron temperatures of the hot, dense plasma trapped within the loop. Calculation of the physical parameters of the 20-cm loop results in a semilength of about 5 x 10 to the 9th cm, maximum electron temperature of about 3 x 10 to the 6th K, pressure of about 2 dyn/sq cm and electron density of about 2.5 x 10 to the 9th/cu cm, which are all consistent with the properties of coronal loops detected at X-ray wavelengths. The discovery of the 20-cm features thus makes possible the study of the detailed structure, evolution and preflare activity of coronal loops.

Affiliated with

Also associated with

No associations

Rating

Very Large Array observations of coronal loops at 20 centimeter 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 Very Large Array observations of coronal loops at 20 centimeter wavelength, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Very Large Array observations of coronal loops at 20 centimeter wavelength will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1022758