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PRODID:UW-Madison-Physics-Events
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SEQUENCE:1
UID:UW-Physics-Event-6165
DTSTART:20201022T203000Z
DTEND:20201022T220000Z
DTSTAMP:20260415T005630Z
LAST-MODIFIED:20201005T195416Z
LOCATION:Zoom meeting(see Abstract ) Coffee and tea 3:30 pm\, Talk 3:4
 5 PM
SUMMARY:Scaling Laws for Large Scale Magnetic Fields in Stars and in t
 he Laboratory\, Astronomy Colloquium\, Ethan Visniac\, John Hopkins Un
 iversity
DESCRIPTION:The turbulent generation of large scale magnetic fields is
  driven by the transport of magnetic helicity\, which is robustly cons
 erved in conducting fluids.  Some simple scaling laws emerge from this
 .  These can be extended by considering the relationship between shear
  and rotation in turbulent convection.  This work can be directly appl
 ied to stellar magnetic fields for fully convective stars.  Surprising
 ly\, the same scaling laws seem to apply generally\, even in the prese
 nce of stellar tachoclines. I will also discuss the prospects for appl
 ying these insights to laboratory experiments.<br>
\n<br>
\nZoom Meeti
 ng information:<br>
\n<br>
\nhttps://us02web.zoom.us/j/81750055728?pwd
 =T3Y5c1lYZjNnb1ZOWUI1ZXhKMlZBQT09<br>
\n<br>
\nMeeting ID: 817 5005 57
 28<br>
\nPasscode: 000018
URL:https://www.physics.wisc.edu/events/?id=6165
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