S
Samuel E. Gralla
Researcher at University of Arizona
Publications - 73
Citations - 2295
Samuel E. Gralla is an academic researcher from University of Arizona. The author has contributed to research in topics: Black hole & General relativity. The author has an hindex of 25, co-authored 70 publications receiving 1773 citations. Previous affiliations of Samuel E. Gralla include Harvard University & University of Chicago.
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Black hole shadows, photon rings, and lensing rings
TL;DR: The Kavli Institute for Cosmological Physics at the University of Chicago through an endowment from the kavli Foundation as mentioned in this paper has been endowed with the Marion and Stuart Rice Award.
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A rigorous derivation of gravitational self-force
Samuel E. Gralla,Robert M. Wald +1 more
TL;DR: In this paper, the MiSaTaQuWa equations were analyzed in a systematic and rigorous way by considering a one-parameter family of metrics, gab(λ), corresponding to having a body scaled down to zero size and mass in an appropriate manner.
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Rigorous derivation of electromagnetic self-force
TL;DR: In this paper, the authors derived the first rigorous derivation of the complete first-order correction to Lorentz force motion for a sufficiently small charged body with negligible dipole moments and spin.
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Spacetime approach to force-free magnetospheres
TL;DR: In this paper, the theory of force-free magnetospheres has been systematically developed from a spacetime perspective using a suite of spacetime tools and techniques (notably exterior calculus) and exact solutions that demonstrate the extraction and transport of the rotational energy of a compact object.
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Lensing by Kerr Black Holes
TL;DR: In this paper, the authors developed heuristics that characterize the direct rays and study the highly bent geodesics analytically, and defined three critical parameters that respectively control the demagnification, rotation and time delay of successive images of the source, thereby providing an analytic theory of the photon ring.