Publications (13)
On Linear and Nonlinear Acoustics in Stratified, Variable-Area Ducts and Atmospheres, and Lighthill's Proposition
Christopher D. Matzner, Stephen Ro
We consider linear and nonlinear waves in a stratified hydrostatic fluid within a channel of variable area, under the restriction of one-dimensional flow. We derive a modified vers…
Weak shock propagation with accretion. I. Self-similar solutions and application to failed supernovae
Eric R. Coughlin, Eliot Quataert, Stephen Ro
We present solutions for the self-similar propagation of a shock wave in a hydrostatic, adiabatic medium with a point mass gravitational field. In contrast to the well-known, Sedov…
Oblique Shock Breakout in Supernovae and Gamma-Ray Bursts: I. Dynamics and Observational Implications
Christopher D. Matzner, Yuri Levin, Stephen Ro
In a non-spherical stellar explosion, non-radial motions become important near the stellar surface. For realistic deviations from spherical symmetry, non-radial flow dramatically a…
Shock Dynamics in Stellar Outbursts: I. Shock formation
Stephen Ro, Christopher D. Matzner
Wave-driven outflows and non-disruptive explosions have been implicated in pre-supernova outbursts, supernova impostors, LBV eruptions, and some narrow-line and superluminous super…
On the Launching and Structure of Radiatively Driven Winds in Wolf-Rayet Stars
Stephen Ro, Christopher D. Matzner
Hydrostatic models of Wolf-Rayet stars typically contain low-density outer envelopes that inflate the stellar radii by a factor of several and are capped by a denser shell of gas.…
Removal and mixing of the coronal gas from satellites in galaxy groups: cooling the intragoup gas
Jesus Zavala, Michael L. Balogh, Niayesh Afshordi +1
The existence of an extended hot gaseous corona surrounding clusters, groups and massive galaxies is well established by observational evidence and predicted by current theories of…
Wave-Driven Shocks in Stellar Outbursts: Dynamics, Envelope Heating, and Nascent Blastwaves
Christopher D. Matzner, Stephen Ro
We address the shocks from acoustic pulses and wave trains in general one-dimensional flows, with an emphasis on the application to super-Eddington outbursts in massive stars. Usin…
Shock Emergence in Supernovae: Limiting Cases and Accurate Approximations
Stephen Ro, Christopher D. Matzner
We examine the dynamics of accelerating normal shocks in stratified planar atmospheres, providing accurate fitting formulae for the scaling index relating shock velocity to the ini…
Weak Shock Propagation with Accretion. II. Stability of Self-similar Solutions to Radial Perturbations
Eric R. Coughlin, Stephen Ro, Eliot Quataert
Coughlin et al. (2018) (Paper I) derived and analyzed a new regime of self-similarity that describes weak shocks (Mach number of order unity) in the gravitational field of a point…
Pre-Supernova Outbursts via Wave Heating in Massive Stars II: Hydrogen-poor Stars
Jim Fuller, Stephen Ro
Pre-supernova (SN) outbursts from massive stars may be driven by hydrodynamical wave energy emerging from the core of the progenitor star during late nuclear burning phases. Here,…
Oblique Shock Breakout in Supernovae and Gamma-Ray Bursts: II. Numerical Solutions For Non-Relativistic Pattern Speeds
Pegah Salbi, Christopher D. Matzner, Stephen Ro +1
Non-spherical explosions develop non-radial flows as the pattern of shock emergence progresses across the stellar surface. In supernovae these flows can limit ejecta speeds, stifle…
Weak Shock Propagation with Accretion. III. A Numerical Study On Shock Propagation & Stability
Stephen Ro, Eric R. Coughlin, Eliot Quataert
Core-collapse supernovae span a wide range of energies, from much less than to much greater than the binding energy of the progenitor star. As a result, the shock wave generated fr…
The Wolf-Rayet Stellar Response To The Iron Opacity Bump: Envelope Inflation, Winds, and Microturbulence
Stephen Ro
Early-type Wolf-Rayet(WR) stellar models harbor a super-Eddington layer in their outer envelopes due to a prominent iron opacity bump. In the past few decades, one-dimensional hydr…