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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:1
UID:UW-Physics-Event-6276
DTSTART:20210125T180000Z
DTEND:20210125T190000Z
DTSTAMP:20260312T222921Z
LAST-MODIFIED:20210118T235839Z
LOCATION:https://uwmadison.zoom.us/j/96822123897?pwd=Z0ZESm1CNFRkUTVEM
 EIxM2RuN3h0UT09
SUMMARY:Monday Science Seminar w/ Dr. Robert Benjamin (University of W
 isconsin - Whitewater)\, Monday Science Seminar\, Dr. Robert Benjamin\
 , University of Wisconsin - Whitewater
DESCRIPTION:“A Thirty Degree Ionized Circular Arc Around the Big Dip
 per…and Other Surprises” <br>
\n<br>
\nAbstract: I describe the di
 scovery of a faint (1 Rayleigh) thirty-degree circular arc of ionized 
 gas centered on the handle of the Big Dipper: the Ursa Major Arc.  The
  arc subtends one radian of a circle of angular diameter 60 degrees\, 
 is detected in both H-alpha and diffuse ultraviolet emission and is on
 e of the most unusual objects in the sky. I compare this object to oth
 er recently discovered large angular size supernova remnants and descr
 ibe the significance of these objects.  If time allows\, I will share 
 some other recent discoveries of ionized gas structures in the Milky W
 ay. 
URL:https://www.physics.wisc.edu/events/?id=6276
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