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We present Gravity.jl, a new software for the modeling of gravitational lens systems. Gravity.jl is written in the Julia programming language, and is designed to be fast, accurate, and flexible. It can be used to model gravitational lens…

天体物理仪器与方法 · 物理学 2024-10-23 Marco Lombardi

Rotation is ubiquitous in the Universe, and recent kinematic surveys have shown that early type galaxies and globular clusters are no exception. Yet the linear response of spheroidal rotating stellar systems has seldom been studied. This…

Accurate quantification of local packing density and mixing in simulations of particulate systems is essential for many industrial applications. Traditional methods which simply count the number of particle centres within a given volume of…

软凝聚态物质 · 物理学 2025-09-22 Freddie J. Barter , Christopher R. K. Windows-Yule

We present the Julia package Manifolds$.$jl, providing a fast and easy-to-use library of Riemannian manifolds and Lie groups. This package enables working with data defined on a Riemannian manifold, such as the circle, the sphere, symmetric…

数学软件 · 计算机科学 2025-05-20 Seth D. Axen , Mateusz Baran , Ronny Bergmann , Krzysztof Rzecki

Efficiently solving nonlinear equations underpins numerous scientific and engineering disciplines, yet scaling these solutions for challenging system models remains a challenge. This paper presents NonlinearSolve.jl -- a suite of…

We present LimberJack.jl, a fully auto-differentiable code for cosmological analyses of 2 point auto- and cross-correlation measurements from galaxy clustering, CMB lensing and weak lensing data written in Julia. Using Julia's…

宇宙学与河外天体物理 · 物理学 2024-03-18 J. Ruiz-Zapatero , D. Alonso , C. García-García , A. Nicola , A. Mootoovaloo , J. M. Sullivan , M. Bonici , P. G. Ferreira

RelativisticDynamics.jl is an open-source Julia package for relativistic spin-orbital dynamics in the gravitational strong-field of a Kerr spacetime. Existing codes for modelling the dynamics of spinning objects like pulsars in the…

高能天体物理现象 · 物理学 2023-10-18 Tom Kimpson

We study the self-consistent, linear response of a galactic disc to vertical perturbations as induced say by a tidal interaction. We calculate the self-gravitational potential corresponding to a non-axisymmetric, self-consistent density…

天体物理学 · 物理学 2009-11-11 Kanak Saha , Chanda J. Jog

Scorio.jl is a Julia package for evaluating and ranking systems from repeated responses to shared tasks. It provides a common tensor-based interface for direct score-based, pairwise, psychometric, voting, graph, and listwise methods, so the…

数学软件 · 计算机科学 2026-03-17 Mohsen Hariri , Michael Hinczewski , Vipin Chaudhary

The shear response of soft solids can be modeled with linear elasticity, provided the forcing is slow and weak. Both of these approximations must break down when the material loses rigidity, such as in foams and emulsions at their…

软凝聚态物质 · 物理学 2016-07-06 Julia Boschan , Daniel Vagberg , Ellak Somfai , Brian P. Tighe

We determine the response of a self-similar isothermal stellar system to small adiabatic gravitational perturbations. For odd spherical harmonics, the response is identical to the response of the analogous isothermal fluid system. For even…

天体物理学 · 物理学 2009-10-30 Chigurupati Murali , Scott Tremaine

In this paper we present an analytical and numerical study of the response of a circumbinary disc subject to the tidal-forcing of a binary with a fixed circular orbit. We consider fluid discs with a range of thicknesses and binaries with a…

天体物理学 · 物理学 2015-06-24 John D. Larwood , John C. B. Papaloizou

This paper investigates the linear response of a series of spheroidal stellar clusters, the Kuzmin-Kutuzov St\"ackel family, which exhibit a continuous range of flattening and rotation, extending from an isochrone sphere to a Toomre disk.…

星系天体物理 · 物理学 2025-06-24 Kerwann Tep , Christophe Pichon , Michael S Petersen

The open-source software package SolidStateDetectors$.$jl to calculate the fields and simulate the drifts of charge carriers in solid state detectors, together with the corresponding pulses, is introduced. The package can perform all…

仪器与探测器 · 物理学 2026-02-17 I. Abt , F. Fischer , F. Hagemann , L. Hauertmann , O. Schulz , M. Schuster , A. J. Zsigmond

Evaluation of relativistic molecular integrals over exponential-type spinor orbitals require using the relativistic auxiliary functions in prolate spheroidal coordinates. They have derived recently by the author [Physical Review E 91,…

计算物理 · 物理学 2022-01-26 Ali Bagci

We study the explicitly time-dependent response of a razor-thin axisymmetric disc to externally imposed perturbations by recasting the linearized Collisionless Boltzmann equation as an integral equation and applying Kalnajs' matrix method.…

星系天体物理 · 物理学 2022-06-01 Dominic Dootson , John Magorrian

We study a spherical, self-gravitating fluid model, which finds applications in cosmic structure formation. We argue that since the system features nonlinearity and gravity-induced dispersion, the emergence of solitons becomes possible. We…

斑图形成与孤子 · 物理学 2024-02-21 G. N. Koutsokostas , S. Sypsas , O. Evnin , T. P. Horikis , D. J. Frantzeskakis

I present a flexible solution for the axisymmetric Jeans equations of stellar hydrodynamics under the assumption of an anisotropic (three-integral) velocity ellipsoid aligned with the spherical polar coordinate system. I describe and test a…

星系天体物理 · 物理学 2020-04-24 Michele Cappellari

Accurately modeling the tidal response of neutron stars is crucial to connecting gravitational wave observations of binaries to ultra-dense nuclear physics. Most current models of the tidal response of relativistic stars either assume a…

广义相对论与量子宇宙学 · 物理学 2024-05-24 Abhishek Hegade K. R. , Justin L. Ripley , Nicolás Yunes

Proprietary closed-source software is still the norm in advanced process control. Transparency and reproducibility are key aspects of scientific research. Free and open-source toolkit can contribute to the development, sharing and…

系统与控制 · 电气工程与系统科学 2026-05-07 Francis Gagnon , Alex Thivierge , André Desbiens , Fredrik Bagge Carlson
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