103 citations · 167 across the 20 of their papers we have counts for
8 papers · 1 filter
Accreting Binary Eccentricities follow Predicted Equilibrium Values
Allen R Murray, Paul C Duffell
We investigate observations of circumbinary disks (CBD), to find evidence for an equilibrium eccentricity predicted by current binary accretion theory. Although stellar binary demo…
Could the recent rebrightening of the GW170817A afterglow be caused by a counter jet?
Ranadeep Ghosh Dastidar, Paul Duffell
GRB170817A (also GW170817) became the first binary neutron star (BNS) merger event detected via gravitational waves and electromagnetic signals. Over the next 4 years, various mult…
Expansion properties of the young supernova type Iax remnant Pa 30 revealed
Tim Cunningham, Ilaria Caiazzo, Nikolaus Z. Prusinski +14
The recently discovered Pa 30 nebula, the putative type Iax supernova remnant associated with the historical supernova of 1181 AD, shows puzzling characteristics that make it uniqu…
Measurement of anisotropies in Supernova Remnant observations and their interpretation using numerical models
Soham Mandal, Paul C. Duffell, Abigail Polin +1
Supernova remnants (SNRs) exhibit varying degrees of anisotropy, which have been extensively modeled using numerical methods. We implement a technique to measure anisotropies in SN…
Fast Methods for Computing Photometric Variability of Eccentric Binaries: Boosting, Lensing, and Variable Accretion
Daniel J. D'Orazio, Paul C. Duffell, Christopher Tiede
We analyze accretion-rate time series for equal-mass binaries in co-planar gaseous disks spanning a continuous range of orbital eccentricities up to 0.8, for both prograde and retr…
Sculpting the Morphology of Supernova Remnant Pa 30 via Efficient Ejecta Cooling
Paul C. Duffell, Abigail Polin, Soham Mandal
We demonstrate in a proof-of-concept numerical hydrodynamics calculation that the narrow radial filamentary structures seen in Pa 30 could be generated through highly efficient coo…
jetsimpy: A Highly Efficient Hydrodynamic Code for Gamma-ray Burst Afterglow
Hao Wang, Ranadeep G. Dastidar, Dimitrios Giannios +1
Gamma-ray burst (GRB) afterglows are emissions from ultrarelativistic blast waves produced by a narrow jet interacting with surrounding matter. Since the first multimessenger obser…
The Santa Barbara Binary-Disk Code Comparison
Paul C. Duffell, Alexander J. Dittmann, Daniel J. D'Orazio +13
We have performed numerical calculations of a binary interacting with a gas disk, using eleven different numerical methods and a standard binary-disk setup. The goal of this study…