Large-scale features of the sun at 20 centimeter wavelength

Details Large-scale features of the sun at 20 centimeter wavelength Large-scale features of the sun at 20 centimeter wavelength

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...379..366g&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 379, Sept. 20, 1991, p. 366-380.

Astronomy and Astrophysics

Astronomy

23

Solar Corona, Solar Magnetic Field, Solar Prominences, Solar Radio Emission, Sunspots, Brightness Distribution, Centimeter Waves, Polarization (Waves), Radio Astronomy, Very Large Array (Vla)

Scientific paper

Results are reported from an experimental study of the characteristics of large-scale coronal structures such as active regions, plages, filaments, and coronal holes using data obtained with the VLA at 1.5 GHz during the period September 11-17, 1988. The radio data were supplemented with He 10830- A, H-alpha, and Calcium-K spectroheliograms. A statistical analysis of some of the characteristics of the active regions is performed. Most of the active region sources were found to be about 100 arcsec in size, with bridges between regions common; lower brightness temperature regions showed a higher degree of polarization in general. The maximum polarization was found at the edge of active regions but well within the associated plages. The degree of polarization from bright active regions was small (not more than 20 percent), in agreement with previous results. Evidence was found for compression of preexisting flux by the emerging flux from a new region, which took place in the apparent absence of magnetic reconnection.

Affiliated with

Also associated with

No associations

Rating

Large-scale features of the sun 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 Large-scale features of the sun at 20 centimeter wavelength, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Large-scale features of the sun at 20 centimeter wavelength will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1334959