Self-consistent spherical accretion simulations show cooling-enhanced growth of PBHs with radiative efficiency ~10^{-2} in the bremsstrahlung regime, yielding a critical seed mass of ~10^{-16} M_sun to consume a solar-mass star in a Hubble time.
High resolution schemes for hyperbolic conservation laws
8 Pith papers cite this work. Polarity classification is still indexing.
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Middle-aged PWNe exhibit diverse reverberation-phase evolution but converge to Sedov-like states; 2D instabilities increase apparent size by up to 50% without changing global dynamics, supporting 1D model robustness.
2D radiation-hydrodynamical simulations find accretion outbursts unstable to Rossby-wave instability, forming vortices that suppress planetesimal formation until post-burst quiescence.
Numerical experiment shows alternating-current-driven waves cause a magnetic null to collapse into y-directed then x-directed current sheets, with Hall effect producing lagged out-of-plane flows whose amplitudes increase with driving strength.
3D MHD simulations of young massive star clusters find proton acceleration to hundreds of TeV near O-star termination shocks, with even faster acceleration to over 100 TeV in under 100 years when a supernova remnant expands inside the core.
Derives polarization-dependent damping and heating rates for Alfvénic waves in two-fluid weakly ionized plasmas and simulates nonlinear ponderomotive effects and collisional dissipation.
The Guitar Nebula requires extreme acceleration with η_acc ≳ 3/4 and traverses a dense low-ionization shell from an old supernova remnant in the pressure-driven snowplow regime.
amerta is a new Python library that implements and verifies a standard finite-volume solver for four canonical 1D dam-break Riemann problems against analytical solutions.
citing papers explorer
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Accretion of Primordial Black Holes in Stellar Interiors
Self-consistent spherical accretion simulations show cooling-enhanced growth of PBHs with radiative efficiency ~10^{-2} in the bremsstrahlung regime, yielding a critical seed mass of ~10^{-16} M_sun to consume a solar-mass star in a Hubble time.
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Modelling the Dynamics of Middle-Aged Pulsar Wind Nebulae in the Reverberation Phase
Middle-aged PWNe exhibit diverse reverberation-phase evolution but converge to Sedov-like states; 2D instabilities increase apparent size by up to 50% without changing global dynamics, supporting 1D model robustness.
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Planet formation at the inner edge of the dead zone II. Outbursts, rings, vortices, and suppression of planetesimal formation
2D radiation-hydrodynamical simulations find accretion outbursts unstable to Rossby-wave instability, forming vortices that suppress planetesimal formation until post-burst quiescence.
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A Numerical Experiment on Oscillatory Magnetic Reconnection in a Laboratory Plasma System Driven by Alternating Currents
Numerical experiment shows alternating-current-driven waves cause a magnetic null to collapse into y-directed then x-directed current sheets, with Hall effect producing lagged out-of-plane flows whose amplitudes increase with driving strength.
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Direct simulations of very high energy cosmic ray acceleration in 3D MHD model of a compact star cluster
3D MHD simulations of young massive star clusters find proton acceleration to hundreds of TeV near O-star termination shocks, with even faster acceleration to over 100 TeV in under 100 years when a supernova remnant expands inside the core.
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Propagation of waves in weakly ionized two-fluid plasmas. II. Nonlinear Alfv\'enic waves
Derives polarization-dependent damping and heating rates for Alfvénic waves in two-fluid weakly ionized plasmas and simulates nonlinear ponderomotive effects and collisional dissipation.
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Guitar Nebula: extreme accelerator in extreme environment
The Guitar Nebula requires extreme acceleration with η_acc ≳ 3/4 and traverses a dense low-ionization shell from an old supernova remnant in the pressure-driven snowplow regime.
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amerta: A Python Library for Idealized 1D Saint--Venant Dam-Break Simulation
amerta is a new Python library that implements and verifies a standard finite-volume solver for four canonical 1D dam-break Riemann problems against analytical solutions.