Schedule Jul 21, 2020
Observable Blueshift from Circular Equatorial Orbiters around Kerr Black Holes
Delilah Gates (Harvard University Center for the Fundamental Laws of Nature and the Black Hole Initiative)
Cite as: doi:10.26081/K6XC7P

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 (innermost stable circular orbit). 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.

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