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Physics Colloquium: Prof. Alex Lazarian, University of Wisconsin-Madison

Wed Oct 21, 2020 4:00PM - 5:00PM • Calendars: Colloquia

Measuring magnetic field strength using velocity gradient

Prof. Alex Lazarian
Department of Astronomy, University of Wisconsin-Madison

Magnetic field measurements using dust polarization and spectral line widths is known as Chandrasekhar-Fermi technique. This technique is widely used for studying magnetic fields in interstellar media. I will discuss first the new technique that can provide higher accuracy using less amount of polarization and spectral line data. Then I will discuss how to obtain magnetic field strength without polarization information and also in the situations when the traditional technique is not applicable. Finally, I will discuss how to get the 3D distribution of magnetic field strength in the interstellar medium.

All interested persons are invited to attend remotely—email physics@nd.edu for information.

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