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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-4458
DTSTART:20170126T213000Z
DTEND:20170126T230000Z
DTSTAMP:20260419T042902Z
LAST-MODIFIED:20170119T210433Z
LOCATION:4421 Sterling Hall\, Coffee and Cookies 3:30 pm\, Talk at 3:4
 5 pm
SUMMARY:An X-ray View of the Dusty Universe\, Astronomy Colloquium\, L
 ia Corrales\, Einstein Fello\, UW Madison Astronomy Department
DESCRIPTION:A significant fraction of the heavy elements produced by s
 tars spend some time in the interstellar medium as dust grains.  These
  heavy metal transporters influence gas cooling during star formation\
 , eventually becoming the seeds for planet formation.  Much like quasa
 r spectra are used to probe intergalactic gas\, observations of X-ray 
 bright Galactic compact objects can yield key insights to the mineralo
 gy and evolution of dust grains in the Milky Way.  With high resolutio
 n X-ray spectroscopy\, we can directly measure the state of metals and
  the mineral composition of dust in the interstellar medium.  In addit
 ion\, dust scattering produces a diffuse halo image around bright X-ra
 y objects\, revealing information about dust grain sizes and their spa
 tial distribution.  I will review the most recent exciting dust scatte
 ring discoveries\, which draw on multi-wavelength observations. Finall
 y\, I will discuss open questions regarding our X-ray view of the ISM 
 that can be addressed with lab experiments and future X-ray observator
 ies.<br><br>
\n
URL:https://www.physics.wisc.edu/events/?id=4458
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