Computer Science
Scientific paper
Aug 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009adspr..44..451m&link_type=abstract
Advances in Space Research, Volume 44, Issue 4, p. 451-456.
Computer Science
5
Scientific paper
We report on the analysis of two fast CME-driven shocks observed with the UltraViolet Coronagraph Spectrometer (UVCS) on board the Solar and Heliospheric Observatory (SOHO). The first event, detected on 2002 March 22 at 4.1 R&sun; with the UVCS slit placed in correspondence with the flank of the expanding CME surface, represents the highest UV detection of a shock obtained so far with the UVCS instrument in the corona. The second one, detected on 2002 July 23 at 1.6 R&sun; with the UVCS slit placed in correspondence with the front of the expanding CME surface, shows an anomalous deficiency of ion heating with respect to what observed in previous CME/shocks observed by UVCS, possibly reflecting the effect of different coronal plasma conditions over the solar cycle. From the two different sets of observations we derived an estimate for the shock compression ratio X, which turns out to be X = 2.4 ± 0.2 and X = 2.2 ± 0.1, respectively, for the first and second event. Comparison between the two events provides complementary perspectives on the dynamical evolution of CME-driven shocks.
Bemporad Alessandro
Mancuso Salvatore
No associations
LandOfFree
Interpretation of the SOHO/UVCS observations of two CME-driven shocks 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 Interpretation of the SOHO/UVCS observations of two CME-driven shocks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interpretation of the SOHO/UVCS observations of two CME-driven shocks will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1312760