The National Society of Black Physicists (NSBP) is pleased to introduce Delilah Gates as the inaugural speaker for the NSBP ‘Innovate Seminar Series’! The series is a new forum for NSBP members to share their research ideas and projects in a non-specialist way. The 30-minute talk (followed by 15 minutes of Q&A) was recorded on Zoom with a live audience, then shared with the NSBP network. Delilah Gates is a Ph.D. candidate at Harvard University Physics and a member of The Center for the Fundamental Laws of Nature and Black Hole Initiative. Click the button below to view the abstract and the presentation.

Seminar Abstract

With the success of the Event Horizon Telescope, identifying new observational signatures of black holes are of increasing interest. In this talk we investigate blueshift of photons from an equatorial accretion disk of emitters orbiting on stable circular orbits terminating at the ISCO. We analytically calculate the blueshift of photons that escape to the celestial sphere (instead of falling into the black hole) and numerically calculate the maximum blueshift received by an observer at fixed angle on the celestial sphere.

Special thanks to the Kavli Institute for Theoretical Physics at the University of California Santa Barbara for their support of this seminar series.