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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20150603T103000
DTEND;TZID=Atlantic/Canary:20150603T113000
UID:iactalks-788
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/788
CREATED:2015-06-03T10:30:00+01:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:The wounded Sun
DESCRIPTION:The wounded Sun\nProf. Paul S. Cally\n\nThe Sun is a magnetic s
 tar, not as magnetic as some stars, or as it was when itwas younger, but n
 onetheless magnetic fields dominate and even construct itsatmosphere. Ther
 e would be no corona without magnetic fields. The surface isalso dappled w
 ith small scale magnetic field associated with surface convectioncells, gr
 anules and supergranules. But sometimes we also see much larger andmore po
 werful Active Regions containing sunspots. These are wounds in thesurface 
 of the Sun that allow waves and oscillations in the solar interior andatmo
 sphere to be coupled much more directly than they usually are. Inparticula
 r, they allow the Sun's internal seismology (the p-modes) to drive avariet
 y of waves through the Active Region atmosphere, and conversely, theatmosp
 heres to pollute the internal seismology. This makes active regionheliosei
 smology a very challenging field.
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