Propagating shocks in the corona

Details Propagating shocks in the corona Propagating shocks in the corona

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987sici.symp...11l&link_type=abstract

In Alabama Univ., Huntsville. STIP Symposium on Physical Interpretation of Solar/Interplanetary and Cometary Intervals p 11 (SEE

Other

Interplanetary Medium, Intervals, Shock Waves, Solar Activity, Solar Corona, Wave Propagation, Decimeter Waves, Models, Solar Radio Bursts, Spectrographs

Scientific paper

High resolution observations performed with the Decimeter spectrograph and the multichannel receiver at Nancay were analyzed in the range of 25-75 MHz. Sixty Type II bursts were selected. In this frequency range, type II events are generally associated with other radio emissions (such as storms of type III-U-I bursts); they are preceeded or followed by groups of U-bursts. One third of type II events show a nonuniform frequency drift, usually a steep decrease followed by an abrupt increase. This phenomenon can be explained by the propagation of an extended disturbance through the ambient corona when the density gradient is enhanced. An empirical coronal model is proposed to interpret these observations. The observations at fixed frequency of Type II bursts including fundamental and harmonic components are analyzed. It is shown that the spectrum of the intensity fluctuations differs with the fundamental and the harmonic components. The origin of these differences is discussed.

Affiliated with

Also associated with

No associations

Rating

Propagating shocks in the corona 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 Propagating shocks in the corona, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Propagating shocks in the corona will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1761318