Results 31 to 40 of about 51,405 (265)

Signatures of Galaxy-Cluster Interactions: Spiral Galaxy Rotation Curve Asymmetry, Shape, and Extent [PDF]

open access: yes, 2000
The environmental dependencies of the characteristics of spiral galaxy rotation curves are studied in this work. We use our large, homogeneously collected sample of 510 cluster spiral galaxy rotation curves to test the claim that the shape of a galaxy's ...
Adabi M. G.   +16 more
core   +4 more sources

Rotation Curve of the Galaxy [PDF]

open access: yesPublications of the Astronomical Society of Japan, 1997
Reanalyzing the galactic HI survey data with two methods which make use of the geometry of the galactic disk, we explore the outer rotation curve. In addition to the derivation of the outer rotation curve, we investigate their uncertainties, which have not been established previously.
Mareki Honma, Yoshiaki Sofue
openaire   +1 more source

Kinematics and dynamics of the M51-type galaxy pair NGC 3893/96 (KPG 302) [PDF]

open access: yes, 2007
We study the kinematics and dynamics of the M51-type interacting galaxy pair KPG 302 (NGC 3893/96). We analyse the distribution of the dark matter (DM) halo of the main galaxy in order to explore possible differences between DM halos of "isolated ...
Amram, Philippe   +4 more
core   +4 more sources

On the Dwarf Galaxy Rotation Curve Diversity Problem

open access: yesGalaxies, 2018
In this paper, we show how baryonic physics can solve the problem of the striking diversity in dwarf galaxy rotation curves shapes. To this aim, we compare the distribution of galaxies of the SPARC sample, in the plane V2kpc-VRlast (V2kpc being the ...
Antonino Del Popolo   +2 more
doaj   +1 more source

On the Incompleteness of Birkhoff’s Theorem: A New Approach to the Central Symmetric Gravitational Field in Vacuum Space

open access: yesReports in Advances of Physical Sciences, 2023
Birkhoff’s theorem (1923) states that in the framework of General Relativity the only solution to the central symmetric gravitational field in vacuum is the Schwarzschild metric.
Michel Canac
doaj   +1 more source

The universal rotation curve of spiral galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society: Letters, 2006
Abstract The observed strong dark-to-luminous matter coupling is described by a bias relation between visible and dark matter sources. We discuss the bias which emerges in the case where the topological structure of the Universe at very large distances does not properly match that of the Friedman space. With the use of such ‘topological’
Kirillov, AA, Turaev, D
openaire   +4 more sources

Rotation curve of our Galaxy and field galaxies [PDF]

open access: yesSymposium - International Astronomical Union, 2004
We present a database of galaxies rotation curve (from Hα observations), including our Galaxy.
D. Russeil   +3 more
openaire   +1 more source

The structure and kinematics of the the Galaxy thin gaseous disc outside the solar orbit [PDF]

open access: yes, 2007
The rotation curve of the Galaxy is generally thought to be flat. However, using radial velocities from interstellar molecular clouds, which is common in rotation curve determination, seems to be incorrect and may lead to incorrectly inferring that the ...
Galazutdinov, G. A.   +4 more
core   +4 more sources

PROBES. I. A Compendium of Deep Rotation Curves and Matched Multiband Photometry

open access: yesThe Astrophysical Journal Supplement Series, 2022
We present the Photometry and Rotation Curve Observations from Extragalactic Surveys (PROBES) compendium of extended rotation curves for 3163 late-type spirals, with matching homogeneous multiband photometry for 1677 of them.
Connor Stone   +4 more
doaj   +1 more source

Theoretical Search for Gravitational Bound States of Tachyons

open access: yesParticles, 2022
The mission here is to see if we can find bound states for tachyons in some gravitational environment. That could provide an explanation for the phenomena called Dark Matter. Starting with the standard Schwarzschild metric in General Relativity, which is
Charles Schwartz
doaj   +1 more source

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