12 citations · 31 across the 9 of their papers we have counts for
11 papers
An End-to-End Numerical Framework for Tidal Disruption Events with AthenaK
Hong-Xuan Jiang, Mengqi Yang, David A. Velasco-Romero +4
In a tidal disruption event (TDE), a black hole (BH) tears apart a star, whose bound debris returns over many orbits to form an accretion disk. We present a framework built on the…
Formation of Merging Black Hole Binaries Inside Massive AGN Stars
Sizheng Ma, Douglas N. C. Lin, David A. Velasco-Romero
Stars embedded in the disks of active galactic nuclei (AGN) can grow to hundreds of solar masses, and the same disks are expected to host a population of stellar-mass black holes.…
Spectral Difference Method with a Posteriori Limiting: III- Navier-Stokes Equations with Arbitrary High-Order Accuracy
David A. Velasco-Romero, Romain Teyssier
We incorporate an arbitrarily high-order method for the Laplacian operator into the Spectral Difference method (SD). The resulting method is capable of capturing shocks thanks to i…
The LISA Astrophysics "Disc-IMRI" Code Comparison Project: Intermediate-Mass-Ratio Binaries in AGN-Like Discs
Andrea Derdzinski, Alexander J. Dittmann, Alessia Franchini +16
Upcoming space-based gravitational wave detectors such as LISA, the Laser Interferometer Space Antenna, will be sensitive to extreme- and intermediate-mass-ratio inspirals (EMRIs a…
Dust rings trap protoplanets on eccentric orbits and get consumed by them
David A. Velasco-Romero, Frédéric S. Masset, Alessandro Morbidelli +3
We study the orbital evolution and mass growth of protoplanets with masses ~M in the vicinity of a dusty ring, using three-dimensional numerical simulations…
Spectral Difference method with a posteriori limiting: II- Application to low Mach number flows
D. A. Velasco-Romero, R. Teyssier
Stellar convection poses two main gargantuan challenges for astrophysical fluid solvers: low-Mach number flows and minuscule perturbations over steeply stratified hydrostatic equil…
Comparison between a priori and a posteriori slope limiters for high-order finite volume schemes
Jonathan Palafoutas, David A. Velasco Romero, Romain Teyssier
High-order finite volume and finite element methods offer impressive accuracy and cost efficiency when solving hyperbolic conservation laws with smooth solutions. However, if the s…
Spectral Difference method with a posteriori limiting: Application to the Euler equations in one and two space dimensions
David Velasco-Romero, Maria Han Veiga, Romain Teyssier
We present a new numerical scheme which combines the Spectral Difference (SD) method up to arbitrary high order with \emph{a-posteriori} limiting using the classical MUSCL-Hancock…
Eccentricity driving of pebble accreting low-mass planets
David A. Velasco-Romero, Frédéric S. Masset, Romain Teyssier
By means of high resolution hydrodynamical, three-dimensional calculations with nested-meshes, we evaluate the eccentricity reached by a low-mass, luminous planet embedded in an in…
An arbitrary high-order Spectral Difference method for the induction equation
Maria Han Veiga, David A Velasco-Romero, Quentin Wenger +1
We study in this paper three variants of the high-order Discontinuous Galerkin (DG) method with Runge-Kutta (RK) time integration for the induction equation, analysing their abilit…
Planet-disc interactions with Discontinuous Galerkin Methods using GPUs
David A. Velasco-Romero, Maria Han Veiga, Romain Teyssier +1
We present a two-dimensional Cartesian code based on high order discontinuous Galerkin methods, implemented to run in parallel over multiple GPUs. A simple planet-disc setup is use…