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SUMMARY:Mapping Magnetic Field Structure in Galactic Supernova Remnants wi
 th ASKAP
DTSTART;VALUE=DATE-TIME:20261028T175500Z
DTEND;VALUE=DATE-TIME:20261028T180500Z
DTSTAMP;VALUE=DATE-TIME:20261025T114634Z
UID:indico-contribution-3647@nyx.physics.mcgill.ca
DESCRIPTION:Speakers: Gabrielle Graham (University of Alberta)\nPolarizati
 on observations provide a unique opportunity to probe the geometry and str
 ucture of astrophysical magnetic fields. In the Milky Way\, Supernova remn
 ants (SNRs) are a key environment for connecting polarized emission to the
  physical processes tied to shaping the magnetic field: shocks\, turbulenc
 e\, and instabilities. By studying the organization of the on-sky polariza
 tion angle (PA) in SNRs\, we are able to directly investigate the structur
 e of the local magnetic field. Past radio observations of Galactic SNRs ha
 ve been limited by sky coverage or resolution. However\, with new observat
 ions from the Australian Square Kilometre Array Pathfinder (ASKAP) telesco
 pe\, we are able to study the polarization properties of Galactic SNRs in 
 unprecedented detail across the entire southern sky. Here\, we present an 
 in-depth study of the on-sky magnetic field structure for seven Galactic S
 NRs. We use radio polarization and continuum data from the Polarization Sk
 y Survey of the Universe’s Magnetism (POSSUM) and the Evolutionary Map o
 f the Universe (EMU) surveys. We derive on-sky magnetic field maps for the
  seven SNRs from the recovered intrinsic polarization angles. We also quan
 tify the uncertainties in the intrinsic polarization angle measurements du
 e to the differential rotation induced by the Faraday effect. Our on-sky m
 agnetic field maps serve as an important foundation for future work mappin
 g the three-dimensional magnetic field structure of the Galaxy.\n\nhttps:/
 /nyx.physics.mcgill.ca/event/587/contributions/3647/
LOCATION:Online 
URL:https://nyx.physics.mcgill.ca/event/587/contributions/3647/
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