Results 51 to 60 of about 411,589 (180)
Determination of Solar System R-Process Abundances using ENDF/B-VIII.0 and TENDL-2015 libraries [PDF]
arXiv, 2020 Recent multi-messenger detection of the binary neutron star merger (GW170817) energized the astrophysical community and encouraged further research for determination of nuclear physics observables. Comprehensive studies of atomic nuclei in the cosmos provide an opportunity for investigating these astrophysical phenomena and acquiring complementary ...
arxiv
Extrapolation Boundary Conditions for 2‐D Smoothed Particle Hydrodynamics
International Journal for Numerical Methods in Fluids, EarlyView.This paper introduces novel inflow, outflow, and wall boundaries for the WCSPH method. Utilising innovative concepts from finite volume methods, fluid properties of sequential dynamic particles with varying distances to boundaries are extrapolated to ghost and wall particles using first‐order Taylor series expansion.
Hossein Mahdizadeh +3 more
wiley +1 more source
Classical novae and type I X-ray bursts: challenges for the 21st century [PDF]
arXiv, 2014 Classical nova explosions and type I X-ray bursts are the most frequent types of thermonuclear stellar explosions in the Galaxy. Both phenomena arise from thermonuclear ignition in the envelopes of accreting compact objects in close binary star systems.
arxiv
Linear Discontinuity Sharpening for Highly Resolved and Robust Magnetohydrodynamics Simulations
International Journal for Numerical Methods in Fluids, EarlyView.This study applies a reconstruction scheme, “hybrid MUSCL–THINC” for finite volume methods developed by Chiu et al., to magnetohydrodynamics (MHD) simulations. Furthermore, the robustness is improved by a modification that deactivates an artificial compression by THINC depending on the non‐linearity of MHD discontinuities.
Tomohiro Mamashita +2 more
wiley +1 more source
, 2016 We argue that dark matter and dark energy phenomena associated with galactic rotation curves, X-ray cluster mass profiles, and type Ia supernova data can be accounted for via small corrections to idealized general relativistic spacetime geometries due to
McDevitt, Timothy +3 more
core +1 more source
Materials Genome Engineering Advances, EarlyView.In conventional theories, electron‐phonon relaxation time τe‐p ${\tau }_{e\mbox{-}p}$—the average interval between two consecutive electron‐phonon collisions—is assumed to be independent of electron density. In this study, we establish a new relationship of τe−p=C∗·T−1·n−1/3 ${\tau }_{e-p}={C}^{\ast }\mathit{\cdot }{T}^{-1}\mathit{\cdot }{n}^{-1/3 ...
Ziru Wang +6 more
wiley +1 more source
3DMAP-VR, a project to visualize 3-dimensional models of astrophysical phenomena in virtual reality [PDF]
arXiv, 2019 In this research note, we present 3DMAP-VR,(3-Dimensional Modeling of Astrophysical Phenomena in Virtual Reality), a project aimed at visualizing 3D MHD models of astrophysical simulations, using virtual reality sets of equipment. The models account for all the relevant physical processes in astrophysical phenomena: gravity, magnetic-field-oriented ...
arxiv
Exposing and Challenging “Grit” in Physics Education
Science Education, EarlyView.ABSTRACT In STEM education, grit is increasingly the focus of research, with scholars and educators seeking to develop and test interventions that will enhance persistence. As part of the special issue Centering Affect and Emotion Toward Justice and Dignity in Science Education, in this paper, we use interviews with 12 white physics faculty to show ...
Amy Robertson +3 more
wiley +1 more source
Multiphysics Simulation Methods in Computer Graphics
Computer Graphics Forum, EarlyView.Abstract Physics simulation is a cornerstone of many computer graphics applications, ranging from video games and virtual reality to visual effects and computational design. The number of techniques for physically‐based modeling and animation has thus skyrocketed over the past few decades, facilitating the simulation of a wide variety of materials and ...
Daniel Holz +5 more
wiley +1 more source
All-sky Medium Energy Gamma-ray Observatory: Exploring the Extreme Multimessenger Universe [PDF]
, 2019 The All-sky Medium Energy Gamma-ray Observatory (AMEGO) is a probe class mission concept that will provide essential contributions to multimessenger astrophysics in the late 2020s and beyond.
Grefenstette, Brian, McEnery, Julie E.
core