Results 31 to 40 of about 115,369 (189)
Practical Limits on Nanosatellite Telescope Pointing: The Impact of Disturbances and Photon Noise
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]
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*
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
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]
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]
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]
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
To be published in the Proceedings of 19th Lake Louise Winter Institute (15-21 February 2004).
openaire +4 more sources
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
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

