Events Calendar

Implications of non-ideal magneto..., J. Wurster, U Exeter

Date:
Thursday, September 28, 2017
Time:
1:30 pm - 2:30 pm
Location:
Physics & Astronomy Building (PAB)
Room: 100
Cost:
Free

Department of Physics and Astronomy

PHYSICS & ASTRONOMY COLLOQUIUM

Dr. James Wurster

Department of Physics & Astronomy
University of Exeter, U.K.

The implications of non-ideal magnetohydrodynamics on star formation

ABSTRACT

Until recently, numerical simulations of low-mass star formation have been unable to produce large discs around a forming protostar.  This contradicts observations.  With the inclusion of non-ideal magnetohydrodynamics (MHD), large discs are now being formed in numerical simulations, indicating the necessity of non-ideal MHD.  If the inclusion of non-ideal MHD can self-consistently re-introduce discs, then what effect would it have on the formation of the protostar itself, or on large scales in star forming clusters?

In this talk, I will first introduce the three non-ideal MHD processes: Ohmic resistivity, ambipolar diffusion, and the Hall effect.  I will then discuss their implications on disc formation, the formation and evolution of the first and second hydrostatic core, and finally on star cluster formation.

STUDENTS – after the talk, you’re encouraged to return to the 2nd floor Atrium lounge to meet with the speaker.
COFFEE – coffee and cookies will be available in the 2nd floor Atrium lounge at 1:15 p.m.
CELL PHONES – as a courtesy to the speaker and audience, please set your cellphones to “silent” mode. Thanks!
Host:
Prof. S. Basu
Contact:
Jodi Guthrie - Assistant to the Chair
jodi@uwo.ca
519-661-2111 ext.86438
Event Type:


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