Prof Steven Balbus FRS, FInstP: Publications

Testing theories of accretion and gravity with super-extremal Kerr discs

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 527:3 (2023) 5956-5973

Authors:

Andrew Mummery, Steven Balbus, Adam Ingram

Fundamental scaling relationships revealed in the optical light curves of tidal disruption events

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 527:2 (2023) 2452-2489

Authors:

Andrew Mummery, Sjoert van Velzen, Edward Nathan, Adam Ingram, Erica Hammerstein, Ludovic Fraser-Taliente, Steven Balbus

Complete characterization of the orbital shapes of the noncircular Kerr geodesic solutions with circular orbit constants of motion

Physical Review D American Physical Society (APS) 107:12 (2023) 124058

Authors:

Andrew Mummery, Steven Balbus

Accretion within the innermost stable circular orbit: analytical thermodynamic solutions in the adiabatic limit

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 521:2 (2023) 2439-2463

Authors:

Andrew Mummery, Steven Balbus

Inspirals from the innermost stable circular orbit of Kerr black holes: exact solutions and universal radial flow

Physical Review Letters American Physical Society 129:16 (2022) 161101

Authors:

Andrew Mummery, Steven Balbus

Abstract:

We present exact solutions of test particle orbits spiraling inward from the innermost stable circular orbit (ISCO) of a Kerr black hole. Our results are valid for any allowed value of the angular momentum a parameter of the Kerr metric. These solutions are of considerable physical interest. In particular, the radial four-velocity of these orbits is both remarkably simple and, with the radial coordinate scaled by its ISCO value, universal in form, otherwise completely independent of the black hole spin.

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