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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20120322T000000
DTEND;TZID=Atlantic/Canary:20120322T010000
UID:iactalks-379
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/379
CREATED:2012-03-22T00:00:00+00:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:The loopy Sun: resolving the small-scale solar magnetism
DESCRIPTION:The loopy Sun: resolving the small-scale solar magnetism\nDr. M
 aría Jesús Martínez González\n\nSolar magnetism may look deceptively b
 oring (a rather common star with relatively low activity). As it turns out
 , even the most quiet areas of the Sun (away from the sunspots) harbour a 
 rich and interesting magnetic activity which is extremely complex and dyna
 mic at spatial scales as small as ~100 km. And more importantly, this magn
 etism permeates most of the Sun, all the time. Therefore, it is not surpri
 sing that it might play an important role for solving some longstanding qu
 estions of stellar magnetism as: how is the million degree corona maintain
 ed when all sunspots have disappeared during the minimum of magnetic activ
 ity? And this is of interest not only for solar physics but for stellar as
 trophysics too, since it is expected that every star with a convective env
 elope harbours small-scale magnetic activity that we cannot hope to observ
 e with the great detail we observe it in the Sun.  From the first evidence
  of the presence of magnetic fields in the quiet areas of the Sun to the d
 iscovery of the smallest organised magnetic structures ever observed in a 
 stellar surface just 30 years have passed. In this seminar, I will give an
  overview of our present knowledge about the small-scale quiet Sun magneti
 sm. In particular, I will show how small loops of sizes of several hundred
 s of kilometers appear in the surface and travel across the solar atmosphe
 re, reaching upper layers and having direct implications on chromospheric 
 (coronal) magnetism. I will also show some of the properties of these newl
 y discovered magnetic structures such as their spatial distribution, a key
  ingredient for understanding their origin.
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