523 citations · 2.5k across the 23 of their papers we have counts for
23 papers
A Characteristic Scale for Cold Gas
Michael McCourt, S. Peng Oh, Ryan M. O'Leary +1
We find that clouds of optically-thin, pressure-confined gas are prone to fragmentation as they cool below K. This fragmentation follows the lengthscale $\sim{c}_{\text{…
Radial velocity monitoring of Kepler heartbeat stars
Avi Shporer, Jim Fuller, Howard Isaacson +6
Heartbeat stars (HB stars) are a class of eccentric binary stars with close periastron passages. The characteristic photometric HB signal evident in their light curves is produced…
Using gas clouds to probe the accretion flow around SgrA*: G2's delayed pericenter passage
Ann-Marie Madigan, Michael McCourt, Ryan O'Leary
We study the dynamical evolution of the putative gas clouds G1 and G2 recently discovered in the Galactic center. Following earlier studies suggesting that these two clouds are par…
Dynamical formation signatures of black hole binaries in the first detected mergers by LIGO
Ryan M. O'Leary, Yohai Meiron, Bence Kocsis
The dynamical formation of stellar-mass black hole-black hole binaries has long been a promising source of gravitational waves for the Laser Interferometer Gravitational-Wave Obser…
Young and Millisecond Pulsar GeV Gamma-ray Fluxes from the Galactic Center and Beyond
Ryan M. O'Leary, Matthew D. Kistler, Matthew Kerr +1
Gamma-ray observations have shown pulsars to be efficient converters of rotational energy into GeV photons and it is of wide-ranging interest to determine their contribution to the…
The imprint of the cosmic supermassive black hole growth history on the 21 cm background radiation
Takamitsu L. Tanaka, Ryan M. O'Leary, Rosalba Perna
The redshifted 21 cm transition line of hydrogen tracks the thermal evolution of the neutral intergalactic medium (IGM) at "cosmic dawn," during the emergence of the first luminous…