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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-3518
DTSTART:20141204T213000Z
DTEND:20141204T230000Z
DTSTAMP:20260404T110414Z
LAST-MODIFIED:20141031T123923Z
LOCATION:4421 Sterling Hall
SUMMARY:Cosmic-Ray Ionization Rates in the Galactic ISM\, Astronomy Co
 lloquium\, Nick Indriolo\, University of Michigan
DESCRIPTION:Cosmic rays play a vital role in initiating the chemistry 
 that occurs in molecular clouds.  The ionization of H and H2 begins a 
 network of ion-molecule reactions responsible for generating many of t
 he diatomic and small polyatomic molecules observed in the interstella
 r medium.  A few such species---HCO+\, DCO+\, OH+\, H2O+\, and H3+ in 
 particular---are formed and destroyed by rather simple processes\, mak
 ing them powerful probes of the cosmic-ray ionization rate.   I will d
 iscuss the current status of observations of these molecular ions with
 in our Galaxy\, as well as the conclusions that can be drawn from this
  ever-growing sample.<br>
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URL:https://www.physics.wisc.edu/events/?id=3518
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