Results 111 to 120 of about 1,187,641 (234)

The Hough Stream Spotter: A New Method for Detecting Linear Structure in Resolved Stars and Application to the Stellar Halo of M31

open access: yesThe Astrophysical Journal, 2022
Stellar streams from globular clusters (GCs) offer constraints on the nature of dark matter and have been used to explore the dark matter halo structure and substructure of our Galaxy. Detection of GC streams in other galaxies would broaden this endeavor
Sarah Pearson   +7 more
doaj   +1 more source

GHASP: an Hα kinematic survey of spiral and irregular galaxies – V. Dark matter distribution in 36 nearby spiral galaxies [PDF]

open access: yes, 2007
The results obtained from a study of the mass distribution of 36 spiral galaxies are presented. The galaxies were observed using Fabry-Perot interferometry as part of the GHASP survey.
Spano M   +5 more
semanticscholar   +1 more source

Dark Matter Signals in the gamma-ray sky

open access: yesEPJ Web of Conferences, 2014
Detection of gamma rays and cosmic rays from the annihilation or decay of dark matter particles is a promising method for identifying dark matter, understanding its intrinsic properties, and mapping its distribution in the universe.
Morselli Aldo
doaj   +1 more source

Time-Dependent Models for Dark Matter at the Galactic Center [PDF]

open access: yes, 2005
The prospects of indirect detection of dark matter at the galactic center depend sensitively on the mass profile within the inner parsec. We calculate the distribution of dark matter on sub-parsec scales by integrating the time-dependent Fokker-Planck ...
A. S. Eddington   +6 more
core   +3 more sources

Apoastron shift constraints on dark matter distribution at the Galactic Center [PDF]

open access: yes, 2007
The existence of dark matter (DM) at scales of a few parsecs down to $\ensuremath{\simeq}{10}^{\ensuremath{-}5}\text{ }\text{ }\mathrm{pc}$ around the centers of galaxies and, in particular, in the Galactic Center region has been considered in the ...
A. Zakharov   +3 more
semanticscholar   +1 more source

MrMARTIAN: A Multiresolution Mass Reconstruction Algorithm Combining Free-form and Analytic Components

open access: yesThe Astrophysical Journal
We present Multi-resolution MAximum-entropy Reconstruction Technique Integrating Analytic Node ( MrMARTIAN ), a new hybrid strong lensing (SL) modeling algorithm.
Sangjun Cha, M. James Jee
doaj   +1 more source

Probing multicomponent extension of inert doublet model with a vector dark matter

open access: yesEuropean Physical Journal C: Particles and Fields, 2019
Although theoretically well-motivated as a minimal consistent dark matter (DM) model, the inert doublet model (IDM) fell short in explaining the existence of DM in the intermediate mass region (100–500 GeV).
Sreemanti Chakraborti   +2 more
doaj   +1 more source

Absorption of dark matter by a supermassive black hole at the Galactic center: role of boundary conditions

open access: yes, 2004
The evolution of the dark matter distribution at the Galactic center is analyzed, which is caused by the combination of gravitational scattering on Galactic bulge stars and absorption by a supermassive black hole at the center of the bulge.
A. Lightman   +7 more
core   +2 more sources

Dark matter distribution function from non-extensive statistical mechanics [PDF]

open access: yes, 2004
We present an analytical and numerical study of the velocity distribution function of self gravitating collisionless particles, which include dark matter and star clusters. We show that the velocity distribution derived through the Eddington’s formula is
S. Hansen   +3 more
semanticscholar   +1 more source

Anisotropy of dark matter velocity distribution

open access: yes, 2018
Direct detection of dark matter with directional sensitivity has the potential to discriminate the dark matter velocity distribution. Especially, it will be suitable to discriminate isotropic distribution from anisotropic one. Analyzing data produced with Monte-Carlo simulation, required conditions for the discrimination is estimated.
openaire   +2 more sources

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