Capture of Dark Matter by the Solar System

Khriplovich, I.B.; Shepelyansky, Dima L.

doi:10.1142/s0218271809015758

Cited by 25 publications

(44 citation statements)

References 19 publications

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“…The only comment we would like to make here is that the effect estimated in eq. (18) is fundamentally distinct in nature in comparison with previously discussed effect [31][32][33][34]. The novel effect which is the subject of this work is entirely rooted to the AQN model when the nuggets get disintegrated when enter the solar atmosphere.…”

Section: Gravitationally Trapped Axionsmentioning

confidence: 72%

“…This assumption may or may not be justified in reality in solar atmosphere. One should emphasize here that any variation of the magnetic field entering (29) do not modify our estimate for the coherence length (32). This is because the estimate (32) is sensitive to the phase variation (rather than to the amplitude changes ∼ ∆ M (z)) determined by a steady and systematic variation of the plasma frequency ω p ∼ √ n in corona.…”

Section: B Solar Corona Background Resonance Conversion In Solar Plmentioning

confidence: 80%

“…[30]. It is also interesting to note that some authors [31,32] previously argued that the DM in the SS might be greatly enhanced (on the level of 10 3 ) as a result of capturing of DM particles from the Galactic halo due to the 3 body interaction (the Sun, a planet and DM particle). Other authors [33,34] estimated that the effect of capturing is small.…”

Section: Gravitationally Trapped Axionsmentioning

confidence: 96%

“…The corresponding annihilation events produce the low velocities axions with v ≤ v trapped . These axions which behave as DM particles surrounding the Sun have no relation to the effect discussed in [31][32][33][34].…”

Section: Gravitationally Trapped Axionsmentioning

confidence: 99%

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Gravitationally bound axions and how one can discover them

Liang¹,

Zhitnitsky²

2019

Phys. Rev. D

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As recently advocated in [1], there is a fundamentally new mechanism for the axion production in the Sun and Earth. However, the role of very slow axions in previous studies were neglected because of its negligible contribution to the total axion production by this new mechanism. In the present work we specifically focus on analysis of the non-relativistic axions which will be trapped by the Sun and Earth due to the gravitational forces. The corresponding emission rate of these low energy axions (below the escape velocity) is very tiny. However, these axions will be accumulated by the Sun and Earth during their life-times, i.e. 4.5 billion of years, which greatly enhances the discovery potential. The computations are based on the so-called Axion Quark Nugget (AQN) Dark Matter Model. This model was originally invented as a natural explanation of the observed ratio Ω dark ∼ Ω visible when the DM and visible matter densities assume the same order of magnitude values, irrespectively to the axion mass ma or initial misalignment angle θ0. This model, without adjustment of any parameters, gives a very reasonable intensity of the extreme UV (EUV) radiation from the solar corona as a result of the AQN annihilation events with the solar material. This extra energy released in corona represents a resolution, within AQN framework, a long standing puzzle known in the literature as the "solar corona heating mystery". The same annihilation events also produce the axions. The flux of these axions is unambiguously fixed in this model and expressed in terms of the EUV luminosity from solar corona. We make few comments on the potential discovery of these gravitationally bound axions. * xunyul@phas.ubc.ca † arz@physics.ubc.ca arXiv:1810.00673v2 [hep-ph] 8 Jan 20191 According to the most recent computations presented in ref. [20], the axion contribution to Ω DM as a result of decay of the topological objects can saturate the observed DM density today if the axion mass is in the range ma = (2.62 ± 0.34)10 −5 eV, while the earlier estimates suggest that the saturation occurs at a larger axion mass. One should also emphasize that the computations [15][16][17][18][19][20] have been performed with assumption that PQ symmetry was broken after inflation.

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Section: Gravitationally Trapped Axionsmentioning

confidence: 72%

Section: B Solar Corona Background Resonance Conversion In Solar Plmentioning

confidence: 80%

Section: Gravitationally Trapped Axionsmentioning

confidence: 96%

Section: Gravitationally Trapped Axionsmentioning

confidence: 99%

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Gravitationally bound axions and how one can discover them

Liang¹,

Zhitnitsky²

2019

Phys. Rev. D

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“…It therefore would have few means to lose energy and end up in the center of a planet. There are processes with three body gravitational interactions that could cause a (proto-)solar system to capture an axion star [90][91][92][93][94][95][96]. With some degree of uncertainty, the conclusion of studies of such processes indicate a fairly small abundance of bound dark matter.…”

Section: Axion Stars In Planetsmentioning

confidence: 99%

Hydrogen axion star: metallic hydrogen bound to a QCD axion BEC

Bai

Barger

Berger

2016

J. High Energ. Phys.

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As a cold dark matter candidate, the QCD axion may form Bose-Einstein condensates, called axion stars, with masses around 10 −11 M . In this paper, we point out that a brand new astrophysical object, a Hydrogen Axion Star (HAS), may well be formed by ordinary baryonic matter becoming gravitationally bound to an axion star. We study the properties of the HAS and find that the hydrogen cloud has a high pressure and temperature in the center and is likely in the liquid metallic hydrogen state. Because of the high particle number densities for both the axion star and the hydrogen cloud, the feeble interaction between axion and hydrogen can still generate enough internal power, around 10 13 W × (m a /5 meV) 4 , to make these objects luminous point sources. High resolution ultraviolet, optical and infrared telescopes can discover HAS via black-body radiation.

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What Can a GNOME Do? Search Targets for the Global Network of Optical Magnetometers for Exotic Physics Searches

Afach,

Aybas Tumturk,

Bekker

et al. 2023

Annalen der Physik

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Numerous observations suggest that there exist undiscovered beyond‐the‐standard‐model particles and fields. Because of their unknown nature, these exotic particles and fields could interact with standard model particles in many different ways and assume a variety of possible configurations. Here, an overview of the global network of optical magnetometers for exotic physics searches (GNOME), the ongoing experimental program designed to test a wide range of exotic physics scenarios, is presented. The GNOME experiment utilizes a worldwide network of shielded atomic magnetometers (and, more recently, comagnetometers) to search for spatially and temporally correlated signals due to torques on atomic spins from exotic fields of astrophysical origin. The temporal characteristics of a variety of possible signals currently under investigation such as those from topological defect dark matter (axion‐like particle domain walls), axion‐like particle stars, solitons of complex‐valued scalar fields (Q‐balls), stochastic fluctuations of bosonic dark matter fields, a solar axion‐like particle halo, and bursts of ultralight bosonic fields produced by cataclysmic astrophysical events such as binary black hole mergers are surveyed.

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Capture of Dark Matter by the Solar System

Cited by 25 publications

References 19 publications

Gravitationally bound axions and how one can discover them

Gravitationally bound axions and how one can discover them

Hydrogen axion star: metallic hydrogen bound to a QCD axion BEC

What Can a GNOME Do? Search Targets for the Global Network of Optical Magnetometers for Exotic Physics Searches

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