6 papers
A Similarity Theorem and Its Breakdown in Atomic Black Hole Accretion
Marcus DuPont
Atomic gas in a point-mass potential possesses an exact similarity that survives time dependence, two-body atomic microphysics, and a specified class of radiation and feedback laws…
Self-Limited Accretion onto Embedded Binaries in a Uniform Medium
Marcus DuPont, Eliot Quataert
We study accretion from a uniform gas at rest onto equal-mass binaries -- the binary Bondi problem -- as a function of adiabatic index~ and compactness , where $R…
Did Binary Neutron Star Merger GW170817 Leave Behind A Long-lived Neutron Star?
Marcus DuPont, Andrew MacFadyen
We consider the observational implications of the binary neutron star (BNS) merger GW170817 leaving behind a rapidly rotating massive neutron star that launches a relativistic, equ…
Strong Bow Shocks: Turbulence and An Exact Self-Similar Asymptotic
Marcus DuPont, Andrei Gruzinov, Andrew MacFadyen
We show that strong bow shocks are turbulent and non-universal near the head, but asymptote to a universal steady, self-similar, and analytically solvable flow in the downstream. T…
Explosions in Roche-Lobe Distorted Stars: Relativistic Bullets in Binaries
Marcus DuPont, Andrew MacFadyen, Selma de Mink
State-of-the-art surveys reveal that most massive stars in the universe evolve in close binaries. Massive stars in such systems are expected to develop aspherical envelopes due to…
Stars Bisected by Relativistic Blades
Marcus DuPont, Andrew MacFadyen
We consider the dynamics of an equatorial explosion powered by a millisecond magnetar formed from the core collapse of a massive star. We study whether these outflows -- generated…