Ohio State is in the process of revising websites and program materials to accurately reflect compliance with the law. While this work occurs, language referencing protected class status or other activities prohibited by Ohio Senate Bill 1 may still appear in some places. However, all programs and activities are being administered in compliance with federal and state law.

Colloquium - Lars Bildsten (UC Santa Barbara) - Hearing the Stars: New Insights into Stellar Interiors from Asteroseisomology

Lars Bildsten (UC Santa Barbara) 10/1/19 physics colloquium speaker
October 1, 2019
3:45 pm - 4:45 pm
1080 Physics Research Building, Smith Seminar room - reception at 3:30pm in front of the SSR

Long-term and sensitive space-based photometry from the CoRoT, Kepler and TESS satellites has allowed us to finally 'hear' the stars. These  remarkable data have yielded accurate measurements of masses, radii  and distances for more than 30,000 stars across the Milky Way that  have been largely confirmed by the GAIA data release. More  profoundly, these observations are revealing the interior stellar  conditions, clearly differentiating those stars that are undergoing  helium burning in their cores to those that are only burning hydrogen  in a shell. Moreover, interior rotation rates for hundreds of stars  now test the uncertain physics of how angular momentum is transported  within a star and the absence of dipolar modes in many stars may be  indicative of strong internal magnetic fields.