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BEGIN:VEVENT
DTSTAMP:20260428T023416Z
DTSTART;VALUE=DATE-TIME:20140730T093000
DTEND;VALUE=DATE-TIME:20140730T100000
SUMMARY:Anne-Marie Broomhall: Recent Advances in Helio- and Asteroseismol
 ogy
TZID:Europe/London
UID:20140730-094d43454748d3c801477d78db3325d3@warwick.ac.uk
CREATED:20140728T145618Z
DESCRIPTION:Speaker: Anne-Marie Broomhall Helioseismology uses the Sun's 
 natural acoustic oscillations to study the Sun's interior. Asteroseismol
 ogy applies similar principles and techniques to use a star's natural re
 sonant oscillations to characterise that star. Here I consider the aster
 oseismology of solar-like stars\, whose oscillations are excited by turb
 ulent outer convective regions. I will draw comparisons between heliosei
 smic and asteroseismic data. In particular I will discuss the impact of 
 solar and stellar magnetic fields on the properties of helio- and astero
 seismic data. The Sun's magnetic activity cycle is particularly topical 
 at the moment as it has recently been behaving unexpectedly: The solar a
 ctivity minimum\, observed between 2006 and 2010\, lasted significantly 
 longer than expected. The strength of the Sun's magnetic field has now\,
  once again\, increased and we are currently at or close to the maximum 
 of solar cycle 24. However\, even this cycle is unusual for recent times
  as its peak is smaller than any cycle observed since the early 1900s. I
  will show that the helioseismic data indicate that the solar interior d
 isplayed unusual behaviour well before the recent minimum. It is well kn
 own that violent eruptions associated with the Sun's magnetic activity c
 ycle can impact life on Earth in the form of space weather. Asteroseismi
 c studies of stellar activity are vital both for putting the Sun's activ
 ity cycle in a broader\, stellar context\, and for determining the habit
 ability of any exoplanets.
LOCATION:PLT
CATEGORIES:CFSA Seminar
LAST-MODIFIED:20140728T145618Z
ORGANIZER;CN=Mona Shorehdeli:
END:VEVENT
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