Colloquium on 6 April 2017
Magnetic field structure of intermediate-velocity gas in the local ISM

Details

Title: Magnetic field structure of intermediate-velocity gas in the local ISM
Speaker: Jeroen Stil (University of Calgary)
Date: Thursday, 6 April 2017
Time: 11:00 - 12:00
Venue: SAAO Auditorium

Abstract

Some magnetic structures on scales of hundreds of parsecs revealed by Faraday rotation at high Galactic latitude have been associated with intermediate-velocity (IV) gas. The interaction of IV gas with its magnetized surroundings is an important part of dynamo processes that build up large-scale magnetic fields in galaxies. Nowhere can this interaction be observed in more detail than in the local interstellar medium. After a brief introduction, I will present new results for a nearby IV filament using observations of polarization of diffuse Galactic synchrotron emission from the GALFACTS survey, made with the 300-m Arecibo radio telescope. These data reveal a complicated magnetic structure that is related to the distribution and kinematics of the neutral gas and plasma.

 

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