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Orbital evolution of LIGO/Virgo binaries in stellar clusters driven by cluster tides, stellar encounters and general relativity
Alexander Rasskazov, Roman R. Rafikov
Origin of LIGO/Virgo gravitational wave events may involve production of binaries with relativistic components in dense stellar systems - globular or nuclear star clusters - and th…
Gravitational torque in circumbinary discs: global radial oscillations
Nicolas P. Cimerman, Roman R. Rafikov
Circumbinary discs (CBDs) arise in many astrophysical settings, including young stellar binaries and supermassive black hole binaries. Their structure is mediated by gravitational…
Relativistic phase space diffusion of compact object binaries in stellar clusters and hierarchical triples
Chris Hamilton, Roman R. Rafikov
The LIGO/Virgo detections of compact object mergers have posed a challenge for theories of binary evolution and coalescence. One promising avenue for producing mergers dynamically…
Eclipse timing the Milky Way's gravitational potential
Sukanya Chakrabarti, Daniel J. Stevens, Jason Wright +4
We show that a small, but \textit{measurable} shift in the eclipse mid-point time of eclipsing binary (EBs) stars of 0.1 seconds over a decade baseline can be used to direct…
Secular dynamics of binaries in stellar clusters -- III. Doubly-averaged dynamics in the presence of general relativistic precession
Chris Hamilton, Roman R. Rafikov
Secular evolution of binaries driven by an external (tidal) potential is a classic astrophysical problem. Tidal perturbations can arise due to an external point mass, as in the Lid…
Doppler Boosting of the S-stars in the Galactic Center
Roman R. Rafikov
Astrometry and spectroscopy of the S-stars in the Galactic Center provide a unique way to probe the properties of the central supermassive black hole, as well as the post-Newtonian…