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Simulations of astronomical imaging phased arrays [PDF]

open access: yesJournal of the Optical Society of America A, 2007
We describe a theoretical procedure for analyzing astronomical phased arrays with overlapping beams, and apply the procedure to simulate a simple example.
Hobson, Michael P.   +2 more
core   +3 more sources

The Design and Simulation of an Astronomical Clock [PDF]

open access: yesApplied Sciences, 2021
This paper describes and explains the synthesis of an astronomical clock mechanism which displays the mean position of the Sun, the Moon, the lunar node and zodiac circle as well as the Moon phases and their motion during the year as seen from the Earth. The clock face represents the stereographic projection of the celestial equator, celestial tropics,
Branislav Popkonstantinović   +6 more
openaire   +4 more sources

Astronomical Image Simulation for Telescope and Survey Development [PDF]

open access: yesPublications of the Astronomical Society of the Pacific, 2010
10 pages, 5 figures, 3 tables, PASP accepted. Now includes reference to shapelets image simulation code 'Skylens' by Meneghetti et al. (2008)
Dobke, Benjamin M.   +6 more
openaire   +4 more sources

Computer Simulations of Astronomical Phenomena [PDF]

open access: yesInternational Astronomical Union Colloquium, 1990
The basic idea of this project is to introduce a senior student to an astronomical phenomenon that he analyses carefully and simulates on the graphic screen of a personal computer. In a second step, this simulation serves as a demonstration for junior students.Three examples are presented here: the retrograde motion of the planets, the Earth’s rotation,
A. Noels, R. Papy
openaire   +1 more source

The Athena++ Adaptive Mesh Refinement Framework: Multigrid Solvers for Self-gravity

open access: yesThe Astrophysical Journal Supplement Series, 2023
We describe the implementation of multigrid solvers in the Athena++ adaptive mesh refinement (AMR) framework and their application to the solution of the Poisson equation for self-gravity.
Kengo Tomida, James M. Stone
doaj   +1 more source

Accelerating Polyhedral Discrete Element Method with CUDA

open access: yesThe Astronomical Journal, 2023
This paper presents an efficient CUDA-based implementation of a nonspherical discrete element method where irregular particles are described by using polyhedrons. Two strategies are employed to exploit the parallelism of the numerical method.
Tongge Wen, Xiangyuan Zeng
doaj   +1 more source

Interactive Visualization and Simulation of Astronomical Nebulae [PDF]

open access: yesComputing in Science & Engineering, 2012
Interactive visualization and simulation of astrophysical phenomena help astronomers and enable digital planetariums and television documentaries to take their spectators on a journey into deep space to explore the astronomical wonders of our universe in 3D.
Wenger, Stephan   +5 more
openaire   +2 more sources

Report on the ASTERICS projects CORELib and ROAst [PDF]

open access: yesEPJ Web of Conferences, 2019
Two projects included in the OBELICS work package of the ASTERICS cluster will be described: CORELib and ROAst. CORELib is a collection of simulated showers induced by primary cosmic rays and a common framework to produce and manage such large production.
Bozza Cristiano   +3 more
doaj   +1 more source

Can Cosmological Simulations Reproduce the Spectroscopically Confirmed Galaxies Seen at z ≥ 10?

open access: yesThe Astrophysical Journal Letters, 2023
Recent photometric detections of extreme ( z > 10) redshift galaxies from the JWST have been shown to be in strong tension with existing simulation models for galaxy formation and in the most acute case, in tension with ΛCDM itself.
B. W. Keller   +3 more
doaj   +1 more source

Galaxy Formation Theory [PDF]

open access: yes, 2010
We review the current theory of how galaxies form within the cosmological framework provided by the cold dark matter paradigm for structure formation. Beginning with the pre-galactic evolution of baryonic material we describe the analytical and numerical
Abadi   +563 more
core   +1 more source

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