Messages from THOR about Galactic magnetism

Event Date:
2020-06-15T15:00:00
2020-06-15T16:00:00
Event Location:
Connect via zoom
Speaker:
Jeroen Stil (Calgary)
URL:
https://ubc.zoom.us/j/598771345
Related Upcoming Events:
Astronomy Colloquia
Intended Audience:
Undergraduate
Local Contact:

Douglas Scott

Event Information:

The HI/OH/Recombination line (THOR) survey of the Milky Way is a comprehensive survey of neutral atomic, molecular and ionized gas in the inner Galaxy. THOR provides higher angular resolution and a much wider bandwidth (JVLA L-band) than similar Galactic plane surveys. These are important assets to explore the crowded inner Milky Way. THOR provides us with images of HI, OH, and hydrogen radio recombination lines, as well as the 1-2 GHz continuum with spectral index and linear polarization. Linear polarization as a function of frequency allows us to measure Faraday rotation, the most effective tool for exploring magnetic fields in the Milky Way over a wide range of scales. I will introduce the technique called Faraday Rotation Measure Synthesis, with emphasis on new science that is made possible by this technique. THOR has revealed to us a region of very strong Faraday rotation in the Sagittarius arm of the Milky Way. I will present an update on this work, as well as some new results related to the Galactic Magnetic field on scales of a kpc or less. 

Add to Calendar 2020-06-15T15:00:00 2020-06-15T16:00:00 Messages from THOR about Galactic magnetism Event Information: The HI/OH/Recombination line (THOR) survey of the Milky Way is a comprehensive survey of neutral atomic, molecular and ionized gas in the inner Galaxy. THOR provides higher angular resolution and a much wider bandwidth (JVLA L-band) than similar Galactic plane surveys. These are important assets to explore the crowded inner Milky Way. THOR provides us with images of HI, OH, and hydrogen radio recombination lines, as well as the 1-2 GHz continuum with spectral index and linear polarization. Linear polarization as a function of frequency allows us to measure Faraday rotation, the most effective tool for exploring magnetic fields in the Milky Way over a wide range of scales. I will introduce the technique called Faraday Rotation Measure Synthesis, with emphasis on new science that is made possible by this technique. THOR has revealed to us a region of very strong Faraday rotation in the Sagittarius arm of the Milky Way. I will present an update on this work, as well as some new results related to the Galactic Magnetic field on scales of a kpc or less.  Event Location: Connect via zoom