Coronal oscillations in the vicinity of a sunspot as observed by GIS/CDS

Details Coronal oscillations in the vicinity of a sunspot as observed by GIS/CDS Coronal oscillations in the vicinity of a sunspot as observed by GIS/CDS

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005a%26a...434..751l&link_type=abstract

Astronomy and Astrophysics, Volume 434, Issue 2, May I 2005, pp.751-759

Astronomy and Astrophysics

Astrophysics

3

Sun: Corona, Waves

Scientific paper

In this paper, we present results from a time series analysis of data from the Grazing Incidence Spectrometer (GIS), onboard SoHO. Our observations were concentrated at the boundary between the quiet Sun and an active region, close to a sunspot plume. The dominant oscillations in all the lines studied are of periods longer than 5 min. Although our observations were not taken directly above the sunspot, the 3-min oscillations, which are normally associated with the umbra, are seen in several spectral lines, suggesting some leakage perhaps via plume structures. The oscillations of coronal lines form wavepackets, and are intermittent with no obvious decay. The average time scale of the intermittence is of the order of 20 min, which would correspond to a source size of 2 arcsec.

Affiliated with

Also associated with

No associations

Rating

Coronal oscillations in the vicinity of a sunspot as observed by GIS/CDS 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 Coronal oscillations in the vicinity of a sunspot as observed by GIS/CDS, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coronal oscillations in the vicinity of a sunspot as observed by GIS/CDS will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1682937