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PRODID:UW-Madison-Physics-Events
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SEQUENCE:1
UID:UW-Physics-Event-6295
DTSTART:20210204T160000Z
DTEND:20210204T170000Z
DTSTAMP:20260415T023632Z
LAST-MODIFIED:20210129T144158Z
LOCATION:Zoom meeting(see Abstract ) SPECIAL TIME 10AM
SUMMARY:Interstellar Shocks\, Astronomy Colloquium\, Antoine Gusdorf\,
  Laboratoire de Physique de l’École Normale Supérieure  & Paris Ob
 servatory\, Paris\, France
DESCRIPTION:The interstellar medium is an out-of-equilibrium medium\, 
 where energy is constantly injected in various forms: mechanical energ
 y\, photons\, or cosmic rays. The propagation of shock waves is ubiqui
 tous in the interstellar medium\, where it represents an important par
 t of the mechanical energy input. For instance\, interstellar shocks a
 re generated by the birth (jets and bipolar outflows)\, life (stellar 
 winds) or death (supernova and supernova remnants) of certain stars\, 
 or by the formation of molecular clouds (converging flows). In this ta
 lk\, I propose to review the progresses in our knowledge of the propag
 ation of shocks in the interstellar medium. These progresses have been
  made possible by more and more efficient telescopes in various wavele
 ngths (Spitzer\, Herschel\, SOFIA\, ALMA\, NOEMA\, APEX\, the IRAM-30m
  telescope…)\, and also by the developments of sophisticated models.
  I will illustrate how observations of various species has progressive
 ly led us to include non-stationarity effects\, new geometries\, and n
 ew physical and chemical processes in shock models to better address t
 he classical questions related to the propagation of shocks: What kind
  of chemistry is operating in shocked regions\, and hence what is thei
 r contribution to the cycle of matter in the Galaxy ? What is the ener
 getic impact and feedback of shocks on their local environment ? What 
 is their contribution to the energetic balance of galaxies ? What can 
 shock tell us about scenarios of star formation ? <br>
\nZoom:<br>
\nh
 ttps://uwmadison.zoom.us/j/88513896776?pwd=Y1JtRE1KZllxWkFTamJBSGtGdm9
 yQT09
URL:https://www.physics.wisc.edu/events/?id=6295
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