Simultaneous observations of coronal bright points in X-ray and radio wavelengths

Details Simultaneous observations of coronal bright points in X-ray and radio wavelengths Simultaneous observations of coronal bright points in X-ray and radio wavelengths

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992pasj...44l.167n&link_type=abstract

PASJ: Publications of the Astronomical Society of Japan (ISSN 0004-6264), vol. 44, no. 5, p. L167-L172.

Astronomy and Astrophysics

Astronomy

15

Brightness Distribution, Solar Corona, Solar Radio Emission, Spaceborne Astronomy, Very Large Array (Vla), X Ray Telescopes, Extreme Ultraviolet Radiation, Japanese Spacecraft, Solar X-Rays

Scientific paper

We present a first explicit comparison of coronal bright points in soft X-ray and radio wavelengths, using the Soft X-ray Telescope aboard the Yohkoh spacecraft and the Very Large Array. About half of the 33 compact sources identified in a 20-cm full-disk map appear as X-ray bright points in the X-ray data. The other half apparently corresponds to unipolar regions with enhanced magnetic fields. Thus, the identification of radio bright points alone cannot reliably serve as a proxy for X-ray bright points. A preliminary analysis reveals that bright points commonly observed at 20 cm and in X-rays have temperatures of (1.4-2.9) x 10 exp 6 K and emission measures of (0.4-2.5) x 10 exp 45/cu cm. The observed brightness temperatures at 20 cm (1-2.5) x 10 exp 5 K can be explained in terms of optically thin free-free emission from a plasma with these parameters.

Affiliated with

Also associated with

No associations

Rating

Simultaneous observations of coronal bright points in X-ray and radio wavelengths 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 Simultaneous observations of coronal bright points in X-ray and radio wavelengths, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Simultaneous observations of coronal bright points in X-ray and radio wavelengths will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1870982