Galactic Dark Matter and Terrestrial Periodicities

1998 ◽  
Author(s):  
S. V. Clube ◽  
W. Napier
Keyword(s):  
Dark Matter ◽  
Galactic Dark Matter

scholarly journals Is Galactic Dark Matter White?

1999 ◽  
Vol 513 (2) ◽  
pp. L103-L106 ◽  
Author(s):  
G. Chabrier
Keyword(s):  
Dark Matter ◽  
Galactic Dark Matter

scholarly journals CAPTURE OF DARK MATTER BY THE SOLAR SYSTEM

2009 ◽  
Vol 18 (12) ◽  
pp. 1903-1912 ◽  
Author(s):  
I. B. KHRIPLOVICH ◽  
D. L. SHEPELYANSKY
Keyword(s):  
Dark Matter ◽  
Solar System ◽  
Dark Matter Particle ◽  
Matter Density ◽  
Upper And Lower Bounds ◽  
Analytical Estimate ◽  
Upper Limits ◽  
Galactic Dark Matter ◽  
Three Body ◽  
Optimistic Value

We study the capture of galactic dark matter by the solar system. The effect is due to the gravitational three-body interaction between the sun, one of the planets, and a dark matter particle. The analytical estimate for the capture cross-section is derived and the upper and lower bounds for the total mass of the captured dark matter particles are found. The estimates for their density are less reliable. The most optimistic of them gives an enhancement of dark matter density by about three orders of magnitudes compared to its value in our galaxy. However, even this optimistic value remains below the best present observational upper limits by about two orders of magnitude.

How Far Do They Go? The Outer Structure of Galactic Dark Matter Halos

2006 ◽  
Vol 645 (2) ◽  
pp. 1001-1011 ◽  
Author(s):  
Francisco Prada ◽  
Anatoly A. Klypin ◽  
Eduardo Simonneau ◽  
Juan Betancort‐Rijo ◽  
Santiago Patiri ◽  
...  
Keyword(s):  
Dark Matter ◽  
Dark Matter Halos ◽  
Galactic Dark Matter

scholarly journals A New Proposal for Galactic Dark Matter: Effect of f(T) Gravity

2013 ◽  
Vol 53 (2) ◽  
pp. 370-379 ◽  
Author(s):  
Farook Rahaman ◽  
Ritabrata Biswas ◽  
Hafiza Ismat Fatima ◽  
Nasarul Islam
Keyword(s):  
Dark Matter ◽  
Galactic Dark Matter ◽  
Matter Effect

scholarly journals On measuring the Galactic dark matter halo with hypervelocity stars

2019 ◽  
Vol 487 (3) ◽  
pp. 4025-4036 ◽  
Author(s):  
O Contigiani ◽  
E M Rossi ◽  
T Marchetti
Keyword(s):  
Dark Matter ◽  
Dark Matter Halo ◽  
Galactic Dark Matter

scholarly journals The shape of the dark matter halo revealed from a hypervelocity star

2019 ◽  
Vol 14 (S353) ◽  
pp. 96-100
Author(s):  
Kohei Hattori ◽  
Monica Valluri
Keyword(s):  
Dark Matter ◽  
Posterior Distribution ◽  
Galactic Center ◽  
Dark Matter Halo ◽  
Velocity Data ◽  
Broad Distribution ◽  
Giant Star ◽  
Circular Velocity ◽  
Galactic Dark Matter ◽  
Radial Orbit

AbstractA recently discovered young, high-velocity giant star J01020100-7122208 is a good candidate of hypervelocity star ejected from the Galactic center, although it has a bound orbit. If we assume that this star was ejected from the Galactic center, it can be used to constrain the Galactic potential, because the deviation of its orbit from a purely radial orbit informs us of the torque that this star has received. Based on this assumption, we estimate the flattening of the Galactic dark matter halo by using the Gaia DR2 data and the circular velocity data. Our Bayesian analysis shows that the orbit of J01020100-7122208 favors a prolate halo within ~ 10 kpc from the Galactic center. The posterior distribution of the density flattening q shows a broad distribution at q ≳ 1 and peaks at q ≃ 1.5. Also, 98.5% of the posterior distribution is located at q > 1, highly disfavoring an oblate halo.

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