Results 241 to 250 of about 3,113 (292)
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Research Notes of the AAS, 2020
Abstract Our research focuses on determining the dynamical orbital parameters associated with galaxy collisions. We are accomplishing this by optimizing numerical models of galactic interactions with astronomical observations of colliding galaxies and measuring the uncertainty in the parameter space of these models. This paper will focus
Matthew Ogden +4 more
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Abstract Our research focuses on determining the dynamical orbital parameters associated with galaxy collisions. We are accomplishing this by optimizing numerical models of galactic interactions with astronomical observations of colliding galaxies and measuring the uncertainty in the parameter space of these models. This paper will focus
Matthew Ogden +4 more
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Computer simulation of radio-astronomical systems and data-processing methods
Radiophysics and Quantum Electronics, 1976 P. V. Beketov, A. Khanberdiev
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Numerical simulation of astronomical observations with ISO-LWS
Il Nuovo Cimento C, 1993The purpose of this work is the numerical simulation of the ISO-LWS spectrometer output with a computer code aiming at obtaining data similar as far as possible to those to be gained during the mission. With such data the processing and analysis programmes will be tested in order to assess the instrument capabilities and limits.
E. Tommasi, P. Saraceno, R. Orfei
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High-performance computing simulations of self-gravity in astronomical agglomerates
SIMULATION, 2021This article describes the advances in the design, implementation, and evaluation of efficient algorithms for self-gravity simulations in astronomical agglomerates. Three algorithms are presented and evaluated: the occupied cells method, and two variations of the Barnes–Hut method using an octal and a binary tree.
Néstor Rocchetti +2 more
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Simulating Charge Deposition by Cosmic Rays Inside Astronomical Imaging Detectors
IEEE Transactions on Nuclear Science, 2020In the context of space astronomy missions, accurate and fast modeling of spurious images generated by solar and galactic cosmic rays (GCRs) in imaging detectors is critical in order to assess and mitigate their detrimental effects. Currently, it is only possible to accurately reproduce the CR images including energy loss straggling, with the use of ...
David Lucsanyi, Thibaut Prod'homme
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Simulation of Large-Scale Astronomical CCD Surveys
1989We present the first stage of a project to develop a computer model of a CCD camera system dedicated to galaxy surveys. We plan to improve old and develop new algorithms for reduction and analysis of digital astronomical images. We intend to apply our model to testing theories and observations of the large-scale distribution of galaxies, and data ...
Emilio E. Falco, Michael J. Kurtz
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Large-Scale Multithreading Self-Gravity Simulations for Astronomical Agglomerates
2019 Winter Simulation Conference (WSC), 2019This article presents parallel multithreading self-gravity simulations for astronomical agglomerates, applying High Performance Computing techniques to allow the efficient simulation of systems with a large number of particles. Considering the time scales needed to properly simulate the processes involved in the problem, two parallel mesh-based ...
Sergio Nesmachnow +2 more
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CAOS: a numerical simulation tool for astronomical adaptive optics (and beyond)
SPIE Proceedings, 2004We present recent developments of the CAOS "system", an IDL-based Problem Solving Environment (PSE) whose original aim was to define and simulate as realistically as possible the behavior of a generic adaptive optics (AO) system, from the atmospheric propagation of light, to the sensing of the wave-front aberratoins and the correction through a ...
M. CARBILLET +12 more
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Data modeling for analytical astronomical simulation VV and A
SPIE Proceedings, 2006This paper presents a novel analytical method for comparing simulation data with measured flight data to with the goal of proving Equivalence and Consistency between the model and the real data. Our method overcomes the problems of disparity in the inputs to the simulation and varying number of parameters between the simulation and the measured flight ...
James W. Handley +3 more
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Application of simulated annealing to deconvolution in astronomical speckle imaging
Optics Communications, 1991Abstract Monte-Carlo type simulated annealing has been investigated as an optimization procedure for reconstructing high spatial resolution astronomical images. In particular, the annealing method is shown to be a powerful technique for phase retrieval in connection with Knox-Thompson speckle correlation data.
E.J. Spillar, G.R. Ayers
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