Quasi-periodic structure of solar type IIId radio bursts with echo components

Details Quasi-periodic structure of solar type IIId radio bursts with echo components Quasi-periodic structure of solar type IIId radio bursts with echo components

Jan 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997raf....40.1073a&link_type=abstract

Radiofizika, vol. 40, p. 1073

Computer Science

1

Type 3 Bursts, Radio Emission, Solar Spectra, Noise Storms, Solar Longitude, Plasma Frequencies, Solar Radio Bursts, Echoes

Scientific paper

By means of solar observations with the UTR-2 antenna, a new type IIId emission variety having explicit quasi-periodic structure of narrow-band spectral elements has been found; their complex additional components look like a triple echo. According to our amplitude records at the observing frequency of 25 MHz, the initial short radio burst appears to be a weak precursor of a more powerful echo-like burst accompanied by a pair of final pulses somewhat above the background. Nine events of this kind were registered on August 19, 1992 during one type IIId noise storm related to an active region in the central solar longitude sector. For each such case, the three time intervals between consequent peaks of the complex intensity-time profile are almost identical and equal to 4.7, 5.1 and 5.7 s, on average. They are somewhat (1-2 s) shorter than the maximum delay for the known events with two-humped intensity-time profiles and time-split spectra. The discovery of a new complex variety of the decameter type IIId emission supports the existing hypothesis for the formation of multiple quasi-periodic echoes, after short radio bursts generated at the second harmonic of the local plasma frequency in the solar corona.

Affiliated with

Also associated with

No associations

Rating

Quasi-periodic structure of solar type IIId radio bursts with echo components 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 Quasi-periodic structure of solar type IIId radio bursts with echo components, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quasi-periodic structure of solar type IIId radio bursts with echo components will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1811142