374 citations · 1k across the 28 of their papers we have counts for
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Net Charge Accretion in Magnetized Kerr Black Holes
Ethan Berreby, Avner Okun, Shahar Hadar +1
We investigate the charging process of a rotating Kerr black hole of mass and angular momentum immersed in a stationary, axisymmetric, asymptotically uniform magnetic field…
The symplectic geometry of the black hole photon shell
Judy Shir, Shahar Hadar
The unstably bound, critical null geodesics of the Kerr spacetime form a distinguished class of orbits whose properties govern observables such as the photon ring and the high-freq…
Signatures of particle collisions near extreme black holes
Delilah E. A. Gates, Shahar Hadar
Finite-energy particles in free fall can collide with diverging center-of-mass energy near rapidly rotating black holes. What are the most salient observational signatures of this…
Extreme lensing induces spectro-temporal correlations in black-hole signals
Shahar Hadar, Sreehari Harikesh, Doron Chelouche
Rapid progress in electromagnetic black hole observation presents a theoretical challenge: how can the universal signatures of extreme gravitational lensing be distilled from stoch…
Holography of the Photon Ring
Shahar Hadar, Daniel Kapec, Alexandru Lupsasca +1
Space-based next-generation interferometers propose to measure the Lyapunov exponents of the nearly bound geodesics that comprise the photon ring surrounding the black hole M87*. W…
Photon Emission from Circular Equatorial Kerr Orbiters
Delilah E. A. Gates, Shahar Hadar, Alexandru Lupsasca
We consider monochromatic and isotropic photon emission from circular equatorial Kerr orbiters. We derive analytic expressions for the photon escape probability and the redshift-de…