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16 papers · 2 filters
The NANOGrav 11-Year Data Set: Limits on Gravitational Wave Memory
K. Aggarwal, Z. Arzoumanian, P. T. Baker +58
The mergers of supermassive black hole binaries (SMBHBs) promise to be incredible sources of gravitational waves (GWs). While the oscillatory part of the merger gravitational wavef…
Probing the emission states of PSR J1107-5907
Jingbo Wang, George Hobbs, Matthew Kerr +14
The emission from PSR J1107-5907 is erratic. Sometimes the radio pulse is undetectable, at other times the pulsed emission is weak, and for short durations the emission can be very…
NuSTAR and Chandra observations of new X-ray transients in the central parsec of the Galaxy
Kaya Mori, Charles J. Hailey, Shifra Mandel +14
We report NuSTAR and Chandra observations of two X-ray transients, SWIFT J174540.7290015 (T15) and SWIFT J174540.2290037 (T37), which were discovered by the Neil Gehrels Swif…
Detecting Gravitational Scattering of Interstellar Objects Using Pulsar Timing
Ross J. Jennings, James M. Cordes, Shami Chatterjee
Gravitational scattering events, in which the path of an interstellar object is deflected by a pulsar or the solar system, give rise to reflex motion which can potentially be detec…
Circumbinary Accretion from Finite and Infinite Disks
Diego Muñoz, Dong Lai, Kaitlin Kratter +1
We carry out 2D viscous hydrodynamics simulations of circumbinary disk (CBD) accretion using {\footnotesize AREPO}. We resolve the accretion flow from a large-scale CBD down to the…
Analysis of Multi-Hour Continuous Observations of Seven Millisecond Pulsars
Brent J. Shapiro-Albert, Maura A. McLaughlin, Michael T. Lam +2
Precision pulsar timing can be used for a variety of astrophysical tests from the detection of gravitational waves to probing the properties of the interstellar medium (ISM). Here…