A universal characteristic of type II radio bursts

Details A universal characteristic of type II radio bursts A universal characteristic of type II radio bursts

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jgra..11012s08a&link_type=abstract

Journal of Geophysical Research, Volume 110, Issue A12, CiteID A12S08

Physics

Plasma Physics

2

Solar Physics, Astrophysics, And Astronomy: Radio Emissions, Solar Physics, Astrophysics, And Astronomy: Coronal Mass Ejections (2101), Space Plasma Physics: Radiation Processes, Space Plasma Physics: Shock Waves (4455)

Scientific paper

We present a study on the spectral properties of interplanetary type II radio bursts observed by the Radio and Plasma Wave (WAVES) experiment on board the Wind spacecraft. We investigated the relative bandwidth of the type II radio bursts observed by WAVES from 1997 up to 2003. We obtained three sets of events, based on the frequency domain of occurrence: 109 events in the low-frequency domain (30 KHz to 1000 kHz, detected by the RAD1 receiver), 216 events in the high-frequency domain (1-14 MHz, observed by the RAD2 receiver), and 73 events that spanned both domains (RAD1 and RAD2). Statistical results show that the average bandwidth-to-frequency ratio (BFR) was 0.28 +/- 0.15, 0.26 +/- 0.16, and 0.32 +/- 0.15 for RAD1, RAD2, and RAD1 + RAD2, respectively. We compared our results with those obtained for ISEE-3 type II bursts and found a difference in the average BFR, which seems to be due to a selection effect. The BFR of the WAVES type II bursts is similar to that of metric type II bursts reported in published works. This suggests that the BFR is a universal characteristic, irrespective of the spectral domain. Finally, we also studied the BFR evolution with heliocentric distance using white-light observation of the associated coronal mass ejections. We found that the BFR remains roughly constant in the SOHO/LASCO field of view (i.e., from 2.1 to 32 solar radii), while the bandwidth itself decreases.

Affiliated with

Also associated with

No associations

Rating

A universal characteristic of type II radio bursts 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 A universal characteristic of type II radio bursts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A universal characteristic of type II radio bursts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1365873