Preliminary analysis of a CME observed by SOHO and Ulysses experiments

Details Preliminary analysis of a CME observed by SOHO and Ulysses experiments Preliminary analysis of a CME observed by SOHO and Ulysses experiments

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003esasp.535..567b&link_type=abstract

In: Solar variability as an input to the Earth's environment. International Solar Cycle Studies (ISCS) Symposium, 23 - 28 June 2

Physics

2

Cmes, Uv Spectroscopy

Scientific paper

Over the last week of November 2002 SOHO/LASCO observed several Coronal Mass Ejections, most of which occurring in the NW quadrant. At that time SOHO/UVCS was involved in a SOHO-Sun-Ulysses quadrature campaign, making observations off the west limb of the Sun, at a northern latitude of 27°. Here we focus on data taken at 1.7 solar radii, over a time interval of ≍7 hours, on 26/27 November, 2002, when a large streamer disruption was imaged by LASCO C2 and C3 coronagraphs. UVCS spectra revealed the presence of lines from both high and low ionization ions, such as C III, O VI, Si VIII, IX and XII, Fe X and XVIII, which brighten at different times, with a different time scale and at different positions and are apparently related to different phenomena. In particular, the intensity increase and fast disappearance of the C III 977 Å line represents the passage through the UVCS slit of cold material released in a jet imaged by EIT in the He II 304 Å line. The persistent presence of the Fe XVIII 974 Å line is not easily related to any special feature crossing the UVCS slit. We suggest to interpret this behavior in terms of the reconnection events which lead to the formation of loops observed in the EIT He II 304 Å line.

Affiliated with

Also associated with

No associations

Rating

Preliminary analysis of a CME observed by SOHO and Ulysses experiments 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 Preliminary analysis of a CME observed by SOHO and Ulysses experiments, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preliminary analysis of a CME observed by SOHO and Ulysses experiments will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1152905