Results 121 to 130 of about 2,433,272 (194)

Physical modelling of galaxy clusters and Bayesian inference in astrophysics

arXiv: Cosmology and Nongalactic Astrophysics, 2019
I compare the mass values obtained with data taken from the Arcminute Microkelvin Imager (AMI) radio interferometer system and from the Planck satellite. The former of these uses a Bayesian analysis pipeline that parameterises a cluster in terms of its physical quantities, and models the dark matter \& baryonic components of a cluster using Navarro-
openaire   +3 more sources

Euler–Heisenberg Black Hole Surrounded by Quintessence in the Background of Perfect Fluid Dark Matter: Thermodynamics, Shadows, and Quasinormal Modes

Fortschritte der Physik, Volume 73, Issue 3, March 2025.
Abstract Current observations show that a significant fraction of the Universe is composed of dark energy and dark matter. In this paper, the simultaneous effects of these dark sectors on the Euler–Heisenberg black hole are investigated, using the quintessence matter field and perfect fluid to model them. In particular, the black hole's thermodynamics,
Bilel Hamil, Bekir Can Lütfüoğlu
wiley   +1 more source

Theory and laboratory astrophysics [PDF]

Science opportunities in the 1990's are discussed. Topics covered include the large scale structure of the universe, galaxies, stars, star formation and the interstellar medium, high energy astrophysics, and the solar system.
Alcock, Charles, Allamandola, Lou, Chevalier, Roger A., Cline, David B., Dalgarno, Alexander, Elmegreen, Bruce G., Fall, S. Michael, Ferland, Gary J., Mckee, Christopher F., Schramm, David N.   +9 more
core   +1 more source

Impact of Sudden Stratospheric Warming and Elevated Stratopause Events on the Very Low Frequency Radio Signal

Journal of Geophysical Research: Space Physics, Volume 130, Issue 3, March 2025.
Abstract Sudden Stratospheric Warmings (SSW) and Elevated Stratopause (ES) events are mid‐to‐high latitudinal, atmospheric wave‐driven phenomena leading to significant changes in wind, temperatures, and vertical mass transport, especially at stratospheric and mesospheric altitudes.
H. Schneider, V. Wendt, D. Banyś, M. Hansen, M. Clilverd, P. T. Verronen   +5 more
wiley   +1 more source

Galaxy luminosity function pipeline for cosmology and astrophysics [PDF]

, 2022
Nashwan Sabti, Julián B. Muñoz, Diego Blas   +2 more
openalex   +1 more source

Mathematics and explanation in astronomy and astrophysics [PDF]

, 2007
The purpose of this paper is to expound and clarify the mathematics and explanations commonly employed in certain notable areas of astronomy and astrophysics.
McCabe, Gordon
core   +2 more sources

Composition, Mineralogy, and Noble Gas Content of Apollo 17 Particles and Soils From the 73002 Drive Tube

Journal of Geophysical Research: Planets, Volume 130, Issue 3, March 2025.
Abstract As part of the Apollo Next‐Generation Sample Analysis (ANGSA) program, we provide bulk composition, mineralogy, petrology, and noble gas assays of lunar particles and soils from the top half of the 73001/2 double‐drive tube (i.e., 73002) studied by the ANGSA consortium.
Barbara A. Cohen, Natalie M. Curran, Sarah N. Valencia, Catherine M. Corrigan, Emma S. Bullock, Elana G. Alevy, Scott A. Eckley, the ANGSA Science Team   +7 more
wiley   +1 more source

Fractal dimension analysis for automatic morphological galaxy classification [PDF]

arXiv, 2017
In this report we present experimental results using \emph{Haussdorf-Besicovich} fractal dimension for performing morphological galaxy classification. The fractal dimension is a topological, structural and spatial property that give us information about the space were an object lives.
arxiv  

Global Transport of Chlorine Species in the Martian Atmosphere and the Resulting Surface Distribution of Perchlorates

Journal of Geophysical Research: Planets, Volume 130, Issue 3, March 2025.
Abstract Recent observations by instruments aboard the ExoMars Trace Gas Orbiter (TGO) have revealed the seasonal presence of hydrogen chloride (HCl $\text{HCl}$) in the Martian atmosphere. This discovery may have important implications for Martian photochemistry as chlorine species are chemically active, and it may provide a link between the ...
K. Rajendran, P. M. Streeter, S. R. Lewis, M. K. D. Duffy, J. A. Holmes, K. S. Olsen, O. Korablev, M. R. Patel   +7 more
wiley   +1 more source

The Calculations of Gravity Fields and Rotation Curves of Whirlpool Galaxies and Dark Material [PDF]

arXiv, 2009
The gravity fields and rotation curves of whirlpool galaxies with thin disc distribution of material are calculated numerically. It is proved that the gravity field of mass thin disc distribution is greatly different from that of spherically symmetrical distribution.
arxiv