7 papers
A binary black hole metric approximation from inspiral to merger
Luciano Combi, Sean M. Ressler
We present a semi-analytical binary black hole (BBH) metric approximation that models the entire evolution of the system from inspiral to merger. The metric is constructed as a boo…
Relativistic jets from millisecond proto-magnetars
Dhruv K. Desai, Luciano Combi, Daniel M. Siegel +1
Rapidly rotating, strongly magnetized neutron stars (``millisecond proto-magnetars'') formed in stellar core-collapse, neutron star mergers, and white dwarf accretion-induced colla…
Eccentric Binaries Accreting from Thin Disks: Orbital Evolution
Alexander J. Dittmann, Geoffrey Ryan, Luciano Combi
Circumbinary disks crucially affect the orbital and electromagnetic properties of binary systems across the universe, from stars in our galactic neighborhood to supermassive black…
Jet-driven explosion of an accretion-induced white-dwarf collapse via a magnetorotational dynamo
Luciano Combi, Daniel M. Siegel, Brian D. Metzger
The accretion-induced collapse (AIC) of a rotating white dwarf (WD) offers a potential site of millisecond pulsars/magnetars, gamma-ray bursts, and r-process nucleosynthesis. We pr…
Black Hole Collisions With Thin Accretion Disks: OJ 287 and Small-Mass-Ratio Supermassive Black Hole Binary Candidates
Sean M. Ressler, Luciano Combi, Bart Ripperda +1
OJ 287 is the best-known supermassive black hole binary candidate in the nanohertz gravitational wave band. It exhibits periodic flares every 12 years, likely caused by coll…
Dual Jet Interaction, Magnetically Arrested Flows, and Flares in Accreting Binary Black Holes
Sean M. Ressler, Luciano Combi, Bart Ripperda +1
Supermassive binary black holes in galactic centers are potential multimessenger sources in gravitational waves and electromagnetic radiation. To find such objects, isolating uniqu…