Seminar
| Parent Program: | -- |
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| Location: | SLMath: Eisenbud Auditorium |
Friday, March 13 at 1:00pm, we’ll be back in the Simons-Laufer Mathematical Sciences Institute auditorium for another talk, followed by a tea-and-cookies reception on the SSL patio. To reach SSL from campus, take the Hill shuttle at 12:40 PM from Mining Circle.
This week’s speaker will be Dr. Todd Hoeksema (Stanford University and Director of COFFIES DRIVE Science Center). His talk is entitled: Understanding the solar variability with COFFIES
Please RSVP using this link for this week’s colloquium, including indicating if you are interested in meeting with the speaker.
Google Calendar invite here with the Zoom link for remote attendance
Please find the details of the talk below:
Abstract: The magnetic field that drives most solar variability is a Consequence Of Fields and Flows in the Interior and Exterior of the Sun, COFFIES. The COFFIES Center brings together solar observers, dynamo modelers, and stellar theorists to advance our understanding of and develop predictive capabilities for solar activity on 11-year and shorter time scales. To organize our efforts we are exploring three major themes: the solar tachocline near the base of the convection zone where differential rotation transitions rapidly to the rigidly rotating radiative zone in a remarkably thin shell. The second is the near-surface shear layer in the outer few percent of the Sun. Both of these shear layers can amplify magnetic fields and both can be measured with helioseismic techniques. The final theme is to explain the emergence and transport of magnetic flux from where it is generated. The team enabled by COFFIES addresses these questions in a cross-disciplinary way using improved measurements of the fields and flows to inform and constrain increasingly sophisticated models of convection and magnetic field generation.
About the Speaker: Todd Hoeksema is a Professor of Physics (Research) at Stanford University. He began his graduate career at the Wilcox Solar Observatory (WSO) at Stanford and has since been involved with the Michelson Doppler Imager (MDI) on the SOHO mission launched in 1995 and the Helioseismic and Magnetic Imager (HMI) launched on the Solar Dynamics Observatory (SDO) in 2010. He is currently director of the COFFIES DRIVE Science Center that includes researchers at 15 institutions. His research interests span magnetic fields in the photosphere, corona, and solar wind, as well as flows in the solar interior as measured by helioseismology and their implications for space weather and space climate.
A couple of quick notes for Q&A: please introduce yourself before asking a question, and we’ll aim to provide 10-minute and 5-minute time warnings to keep us on schedule.