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SUMMARY:Antonio Mario Magalhães (IAG\, São Paulo U.)
DTSTART:20210121T143000Z
DTEND:20210121T153000Z
DTSTAMP:20260423T021223Z
UID:CENTRA/27
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/CENTRA/27/">
 Optical Polarimetry and the Galactic Magnetic Field</a>\nby Antonio Mario 
 Magalhães (IAG\, São Paulo U.) as part of CENTRA Seminar\n\n\nAbstract\n
 Interstellar optical polarization is produced by dust grains aligned by a 
 magnetic field and can be used as a tracer of the latter. We discuss the r
 esults of our Interstellar Polarization Survey and what we have learned ab
 out the magnetic field structure of the Galaxy at small and large scales a
 nd at high Galactic latitudes. The data include the Local Interstellar Med
 ium (ISM) and the nature of the SMC dust and its magnetic field structure.
  We also look into intriguing data concerning the relationship between the
  ambient magnetic field direction and that of disks around young stars in 
 the Galaxy. \n\nWe describe the numerical tools we are currently developin
 g towards a Galactic Magnetic field model. It combines radio (synchrotron)
  and optical data and a dust model that may explain the observations. Appl
 ications of this model include the interpretation of our optical polarizat
 ion data towards cosmological fields.\n\nFinally\, we describe our plans f
 or SOUTH POL\, a forthcoming survey of the whole Southern sky in optical p
 olarized light. SOUTH POL will impact several areas\, from Cosmology to So
 lar System studies.\n
LOCATION:https://researchseminars.org/talk/CENTRA/27/
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