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.

scholarly journals CAPTURE OF DARK MATTER BY THE SOLAR SYSTEM: SIMPLE ESTIMATES

2011 ◽  
Vol 20 (01) ◽  
pp. 17-22 ◽  
Author(s):  
I. B. KHRIPLOVICH
Keyword(s):  
Dark Matter ◽  
Solar System ◽  
Cross Section ◽  
Capture Cross Section ◽  
Dark Matter Particle ◽  
The Sun ◽  
Capture Cross ◽  
The Earth ◽  
Galactic Dark Matter ◽  
Three Body

We consider the capture of galactic dark matter by the solar system, due to the gravitational three-body interaction of the Sun, a planet, and a dark matter particle. Simple estimates are presented for the capture cross-section, as well as for the density and velocity distributions of captured dark matter particles close to the Earth.

scholarly journals IS RADIATION OF QUANTIZED BLACK HOLES OBSERVABLE?

2007 ◽  
Vol 16 (07) ◽  
pp. 1243-1248 ◽  
Author(s):  
I. B. KHRIPLOVICH ◽  
N. PRODUIT
Keyword(s):  
Black Holes ◽  
Dark Matter ◽  
Solar System ◽  
Evaporation Rate ◽  
Radiation Spectrum ◽  
Matter Density ◽  
Primordial Black Holes ◽  
Dark Matter Density ◽  
Upper Limit ◽  
Upper Limits

If primordial black holes (PBH) saturate the present upper limit on the dark matter density in our Solar system and if their radiation spectrum is discrete, the sensitivity of modern detectors is close to that necessary for detecting this radiation. This conclusion is not in conflict with the upper limits on the PBH evaporation rate.

scholarly journals DENSITY OF DARK MATTER IN THE SOLAR SYSTEM AND PERIHELION PRECESSION OF PLANETS

2007 ◽  
Vol 16 (09) ◽  
pp. 1475-1478 ◽  
Author(s):  
I. B. KHRIPLOVICH
Keyword(s):  
Dark Matter ◽  
Solar System ◽  
Perihelion Precession ◽  
Upper Limits ◽  
Direct Model ◽  
Model Independent ◽  
Independent Relation

Direct model-independent relation between the secular perihelion precession of a planet and the density of dark matter ρ dm at its orbit is indicated, and used to deduce upper limits on local values of ρ dm .

Thermal relics

2018 ◽  
Author(s):  
Michael Kachelriess
Keyword(s):  
Dark Matter ◽  
Cold Dark Matter ◽  
Dark Matter Particle ◽  
Big Bang ◽  
Matter Density ◽  
Light Elements ◽  
Big Bang Nucleosynthesis ◽  
Boltzmann Equations ◽  
Hubble Rate ◽  
Dark Matter Density

The Boltzmann equations, which describe processes as diverse as the evolution of the dark matter density, big bang nucleosynthesis or recombination, are derived. The Gamov criterion states that processes freeze-out when their rate becomes smaller than the Hubble rate. It is demonstrated that the mass of any thermal relic is bounded by ≲ 20TeV, while the abundance of a cold dark matter particle with 〈σ‎v〉 ≃ 3 × 10−26 cm3/s corresponds to the observed one, Ω‎CDM = 0.2. Big bang nucleosynthesis, which successfully explains the abundance of light elements like D and 4He, is discussed.

scholarly journals UPPER LIMITS ON DENSITY OF DARK MATTER IN SOLAR SYSTEM

2006 ◽  
Vol 15 (04) ◽  
pp. 615-618 ◽  
Author(s):  
I. B. KHRIPLOVICH ◽  
E. V. PITJEVA
Keyword(s):  
Dark Matter ◽  
Solar System ◽  
Observational Data ◽  
Perihelion Precession ◽  
Upper Limits

The analysis of the observational data for the secular perihelion precession of Mercury, Earth, and Mars, based on the EPM2004 ephemerides, results in new upper limits on density of dark matter in the solar system.

scholarly journals Solar System constraints on local dark matter density

2012 ◽  
Vol 2012 (07) ◽  
pp. 047-047 ◽  
Author(s):  
Giuseppe De Risi ◽  
Tiberiu Harko ◽  
Francisco S.N Lobo
Keyword(s):  
Dark Matter ◽  
Solar System ◽  
Matter Density ◽  
Dark Matter Density
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