A comparison of optimisation algorithms for high-dimensional particle and astrophysics applications
Sign Up to like & getrecommendations! Published in 2021 at "Journal of High Energy Physics"
DOI: 10.1007/jhep05(2021)108
Abstract: Abstract Optimisation problems are ubiquitous in particle and astrophysics, and involve locating the optimum of a complicated function of many parameters that may be computationally expensive to evaluate. We describe a number of global optimisation… read more here.
Keywords: astrophysics; particle astrophysics; optimisation algorithms; optimisation ... See more keywords
An efficient computational method for the approximate solution of nonlinear Lane-Emden type equations arising in astrophysics
Sign Up to like & getrecommendations! Published in 2018 at "Astrophysics and Space Science"
DOI: 10.1007/s10509-018-3286-1
Abstract: The key purpose of this article is to introduce an efficient computational method for the approximate solution of the homogeneous as well as non-homogeneous nonlinear Lane-Emden type equations. Using proposed computational method given nonlinear equation… read more here.
Keywords: computational method; astrophysics; solution; emden type ... See more keywords
A high-order numerical method for solving nonlinear Lane-Emden type equations arising in astrophysics
Sign Up to like & getrecommendations! Published in 2018 at "Astrophysics and Space Science"
DOI: 10.1007/s10509-018-3483-y
Abstract: In this paper, some nonlinear Lane-Emden type equations arising in astrophysics are solved by Chebyshev Finite Difference Method. Convergence and error analysis of the method are examined. To show the applicability and efficiency, some astrophysics… read more here.
Keywords: method; astrophysics; nonlinear lane; emden type ... See more keywords
The Equivalence Principle in the Theory of Variable Rest Mass with Applications in Astrophysics
Sign Up to like & getrecommendations! Published in 2020 at "Russian Physics Journal"
DOI: 10.1007/s11182-020-02080-w
Abstract: A covariant equation of motion and energy of a body with variable rest mass with dark energy taken into account in the general theory of relativity is considered on the basis of the equivalence principle. read more here.
Keywords: equivalence principle; theory; variable rest; astrophysics ... See more keywords
TIFR treasures for astronomy from ground to space
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Astrophysics and Astronomy"
DOI: 10.1007/s12036-022-09800-3
Abstract: The infrared astronomy group of the Department of Astronomy and Astrophysics at Tata Institute of Fundamental Research has been pursuing astronomical instrumentation activities since its inception. The group has been routinely involved in a balloon-borne… read more here.
Keywords: treasures astronomy; astronomy; astrophysics; tifr treasures ... See more keywords
Advances in direct measurements of cosmic rays
Sign Up to like & getrecommendations! Published in 2021 at "Journal of the Korean Physical Society"
DOI: 10.1007/s40042-021-00081-7
Abstract: In celebration of the 25th anniversary of the Korean Physical Society Astrophysics Division, reflecting on the progress in cosmic-ray astrophysics seems worthwhile. Significant advances have been made in cosmic-ray measurements in recent years, particularly with… read more here.
Keywords: astrophysics; advances direct; cosmic rays; measurements cosmic ... See more keywords
Design and analysis of a cable-winding device driving large deployable mechanisms in astrophysics missions
Sign Up to like & getrecommendations! Published in 2020 at "Acta Astronautica"
DOI: 10.1016/j.actaastro.2020.01.004
Abstract: Abstract Cables are widely used because of their light weight and wide range of arrangement. To guarantee successful deployment and retraction of cable-driven mechanisms, this paper proposes a novel cable-winding device to fulfil particular requirements… read more here.
Keywords: cable; astrophysics; cable winding; winding device ... See more keywords
Revised and extended calculations with relativistic and QED corrections of selected He-like 3d-elemental ions having astrophysical significance
Sign Up to like & getrecommendations! Published in 2020 at "Radiation Physics and Chemistry"
DOI: 10.1016/j.radphyschem.2020.108866
Abstract: We have systematically enlarged Multiconfiguration Dirac-Fock wavefunctions for the relativistic configuration interaction calculation to include the Breit interaction and quantum electrodynamic corrections for evaluating fine structure data of He-like ions having non-zero nuclear spin for… read more here.
Keywords: calculations relativistic; qed corrections; extended calculations; astrophysics ... See more keywords
Design and fabrication of gas cell targets for laboratory astrophysics experiments on the Orion high-power laser facility
Sign Up to like & getrecommendations! Published in 2017 at "High Power Laser Science and Engineering"
DOI: 10.1017/hpl.2017.22
Abstract: This paper describes the design and fabrication of a range of ‘gas cell’ microtargets produced by the Target Fabrication Group in the Central Laser Facility (CLF) for academic access experiments on the Orion laser facility… read more here.
Keywords: laser; fabrication; astrophysics; gas ... See more keywords
Turbulent hydrodynamics experiments in high energy density plasmas: scientific case and preliminary results of the TurboHEDP project
Sign Up to like & getrecommendations! Published in 2018 at "High Power Laser Science and Engineering"
DOI: 10.1017/hpl.2018.34
Abstract: The physics of compressible turbulence in high energy density (HED) plasmas is an unchartered experimental area. Simulations of compressible and radiative flows relevant for astrophysics rely mainly on subscale parameters. Therefore, we plan to perform… read more here.
Keywords: laser; high energy; astrophysics; hydrodynamics ... See more keywords
The dawn of gravitational-wave astrophysics
Sign Up to like & getrecommendations! Published in 2018 at "Nature Astronomy"
DOI: 10.1038/s41550-018-0536-7
Abstract: The biennial Harvard Sackler conference this year focused on gravitational-wave astrophysics, with a comprehensive programme that reviewed recent discoveries and discussed prospects for a bright future. read more here.
Keywords: wave astrophysics; dawn gravitational; astrophysics; gravitational wave ... See more keywords