Results 31 to 40 of about 115,369 (189)

Practical Limits on Nanosatellite Telescope Pointing: The Impact of Disturbances and Photon Noise

open access: yesFrontiers in Astronomy and Space Sciences, 2021
Accurate and stable spacecraft pointing is a requirement of many astronomical observations. Pointing particularly challenges nanosatellites because of an unfavorable surface area–to-mass ratio and a proportionally large volume required for even the ...
Ewan S. Douglas   +2 more
doaj   +1 more source

Modules for Experiments in Stellar Astrophysics ( ): Convective Boundaries, Element Diffusion, and Massive Star Explosions [PDF]

open access: yes, 2017
We update the capabilities of the software instrument Modules for Experiments in Stellar Astrophysics (MESA) and enhance its ease of use and availability.
B. Paxton   +17 more
semanticscholar   +1 more source

Visible Shapes of Black Holes M87* and SgrA*

open access: yesUniverse, 2020
We review the physical origins for possible visible images of the supermassive black hole M87* in the galaxy M87 and SgrA* in the Milky Way Galaxy. The classical dark black hole shadow of the maximal size is visible in the case of luminous background ...
Vyacheslav I. Dokuchaev   +1 more
doaj   +1 more source

Radiochemical capabilities for astrophysics experiments at the national ignition facility

open access: yesFrontiers in Physics, 2022
The Nuclear and Radiochemistry Group at Lawrence Livermore National Laboratory (LLNL) has developed a suite of diagnostics and techniques that can be used for astrophysics experiments at the National Ignition Facility (NIF).
John D. Despotopulos   +5 more
doaj   +1 more source

The neutrino magnetic moment portal: cosmology, astrophysics, and direct detection [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2020
We revisit the physics of neutrino magnetic moments, focusing in particular on the case where the right-handed, or sterile, neutrinos are heavier (up to several MeV) than the left-handed Standard Model neutrinos.
V. Brdar   +3 more
semanticscholar   +1 more source

Classification of unassociated fermi-LAT sources [PDF]

open access: yesITM Web of Conferences, 2022
The Large Area Telescope (LAT) on board NASA’s Fermi Gamma-ray Space telescope has detected 5788 sources in the 4FGL catalogue. Among them, 271 have been associated to pulsars, 3436 to blazars, and 1782 remain unassociated sources.
Meng Qiyu
doaj   +1 more source

MODULES FOR EXPERIMENTS IN STELLAR ASTROPHYSICS (MESA): BINARIES, PULSATIONS, AND EXPLOSIONS [PDF]

open access: yes, 2015
We substantially update the capabilities of the open-source software instrument Modules for Experiments in Stellar Astrophysics (MESA). MESA can now simultaneously evolve an interacting pair of differentially rotating stars undergoing transfer and loss ...
B. Paxton   +13 more
semanticscholar   +1 more source

NUCLEAR ASTROPHYSICS [PDF]

open access: yesTheoretical Nuclear Physics in Italy, 2005
To be published in the Proceedings of 19th Lake Louise Winter Institute (15-21 February 2004).
openaire   +4 more sources

The Transformation of a Science by a “Technology”: The Case of Astrophysics and the Introduction of Machine Learning

open access: yesHoST, 2023
This article explores the transformations of an area of scientific research provoked by the introduction of big data and the possibilities to treat them by Artificial Intelligence.
Marcovich Anne, Shinn Terry
doaj   +1 more source

Testing Noncommutativity-Like Model as a Galactic Density Profile

open access: yesGalaxies, 2021
Noncommutative-like model (NC-like) is an interesting alternative inspired by string theory to understand and describe the velocity rotation curves of galaxies without the inclusion of dark matter particles.
Juan Jordi Ancona-Flores   +2 more
doaj   +1 more source

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