Observations of rotating sunspots and their effect in the corona

Details Observations of rotating sunspots and their effect in the corona Observations of rotating sunspots and their effect in the corona

Oct 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.505..261b&link_type=abstract

In: SOLMAG 2002. Proceedings of the Magnetic Coupling of the Solar Atmosphere Euroconference and IAU Colloquium 188, 11 - 15 Jun

Physics

5

Sunspots: Rotation, Solar Corona

Scientific paper

Recent observations from TRACE have seen sunspots, in the photospheric white light filter, rotate up to 180 degrees about their umbral centre. The corresponding loops in the coronal fan are seen to twist and can erupt. In an ongoing study, five cases of rotating sunspots have been identified, three of which can be identified with sigmoid structures appearing in Yohkoh/SXT. This paper will present images from one of these events, showing the coupling between the photosphere and the corona, and observational analysis deducing the rotation speeds and how they change through time and with radius of the sunspot. In particular, the paper will focus on the best example of a rotating sunspot observed so far, that of AR 9114 which occurred over 8-10 August 2000 and was observed by TRACE, SoHO/MDI and Yohkoh/SXT. The sunspot rotated 150 degrees within this time and is associated with a sigmoid.

Affiliated with

Also associated with

No associations

Rating

Observations of rotating sunspots and their effect 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 Observations of rotating sunspots and their effect in the corona, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observations of rotating sunspots and their effect in the corona will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1422536