Results 51 to 60 of about 679,095 (339)

Biermann battery as a source of astrophysical magnetic fields

open access: yesOpen Astronomy, 2021
A large number of galaxies have large-scale magnetic fields which are usually measured by the Faraday rotation of radio waves. Their origin is usually connected with the dynamo mechanism which is based on differential rotation of the interstellar medium ...
Mikhailov Evgeny A., Andreasyan Ruben R.
doaj   +1 more source

The 6dF Galaxy Survey: baryon acoustic oscillations and the local Hubble constant [PDF]

open access: yes, 2011
We analyse the large-scale correlation function of the 6dF Galaxy Survey (6dFGS) and detect a baryon acoustic oscillation (BAO) signal at 105h −1 Mpc. The 6dFGS BAO detection allows us to constrain the distance–redshift relation at zeff = 0.106.
F. Beutler   +9 more
semanticscholar   +1 more source

A galaxy-halo model of large-scale structure [PDF]

open access: yes, 2005
We present a new, galaxy-halo model of large-scale structure, in which the galaxies entering a given sample are the fundamental objects. Haloes attach to galaxies, in contrast to the standard halo model, in which galaxies attach to haloes.
Andrew J. S. Hamilton   +31 more
core   +3 more sources

INVESTIGATION OF THE UNIVERSE BY THE LOW-FREQUENCY RADIO ASTRONOMY METHODS IN UKRAINE (According to the report on the XI All-Ukrainian Festival of Science of 18 May 2017, Kyiv) [PDF]

open access: yesRadio Physics and Radio Astronomy, 2018
Purpose: overview of the main results of half a century activities of Ukraine (with emphasis on the last decade) in the field of decameter radio astronomy, presenting a number of astrophysical discoveries in the study of the Solar system, Galaxy and ...
A. A. Konovalenko
doaj   +1 more source

Discovery of a Nearby Low-Surface-Brightness Spiral Galaxy [PDF]

open access: yes, 1998
During the course of a search for compact, isolated gas clouds moving with anomalous velocities in or near our own Galaxy (Braun and Burton 1998 A&A, in press), we have discovered, in the data of the Leiden/Dwingeloo survey (Hartmann and Burton 1997 ...
C. G. Hoopes   +11 more
core   +2 more sources

Simulating galaxy formation with the IllustrisTNG model [PDF]

open access: yes, 2017
We introduce an updated physical model to simulate the formation and evolution of galaxies in cosmological, large-scale gravity+magnetohydrodynamical simulations with the moving mesh code AREPO.
A. Pillepich   +10 more
semanticscholar   +1 more source

The Galaxy Evolution Explorer: A Space Ultraviolet Survey Mission [PDF]

open access: yes, 2004
We give an overview of the Galaxy Evolution Explorer (GALEX), a NASA Explorer Mission launched on 2003 April 28. GALEX is performing the first space UV sky survey, including imaging and grism surveys in two bands (1350-1750 and 1750-2750 Å).
D. C. Martin   +26 more
semanticscholar   +1 more source

Continuity as a Galaxy of Hyperreal Functions [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2008
In the present paper, the problem of defining continuity and s-continuity as a galaxy of hyperreal function is discussed. Our attempt is based on the fact that monads are subsets of some galaxies.
Ibrahim Hamad
doaj   +1 more source

First results from the IllustrisTNG simulations: matter and galaxy clustering [PDF]

open access: yes, 2017
Hydrodynamical simulations of galaxy formation have now reached sufficient volume to make precision predictions for clustering on cosmologically relevant scales.
V. Springel   +17 more
semanticscholar   +1 more source

FIRE-2 simulations: physics versus numerics in galaxy formation [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2017
The Feedback In Realistic Environments (FIRE) project explores feedback in cosmological galaxy formation simulations. Previous FIRE simulations used an identical source code (“FIRE-1”) for consistency.
P. Hopkins   +27 more
semanticscholar   +1 more source

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