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I describe a novel dark matter candidate in which the dark matter is composed of macroscopically large "nuggets" of ordinary quarks and antiquarks in a colour-superconducting phase. The physical properties of these objects are described…

高能天体物理现象 · 物理学 2009-06-03 K. Lawson

Quark nuggets are theoretical objects composed of approximately equal numbers of up, down, and strange quarks. They are also called strangelets, nuclearites, AQNs, slets, Macros, and MQNs. Quark nuggets are a candidate for dark matter,…

高能天体物理现象 · 物理学 2020-09-30 J. Pace VanDevender , C. Jerald Buchenauer , Chunpei Cai , Aaron P. VanDevender , Benjamin A. Ulmen

The Quark Nugget (QN) model of dark matter suggests that the dark matter may consist of compact composite objects of quark matter. Although such composite particles can strongly interact with visible matter, they may remain undetected…

宇宙学与河外天体物理 · 物理学 2024-11-18 V. V. Flambaum , I. B. Samsonov

Several independent observations of the Galactic core suggest hitherto unexplained sources of energy. We suggest that dark matter in the form of dense antimatter nuggets could provide a natural site for electron and proton annihilation,…

天体物理学 · 物理学 2014-10-13 Michael McNeil Forbes , Ariel R. Zhitnitsky

Quark nuggets are a candidate for dark matter consistent with the Standard Model. Previous models of quark nuggets have investigated properties arising from their being composed of strange, up, and down quarks and have not included any…

高能物理 - 唯象学 · 物理学 2020-10-22 J. Pace VanDevender , Ian Shoemaker , T. Sloan , Aaron P. VanDevender , Benjamin A. Ulmen

We study astrophysical implications of the quark nugget model of dark matter and propose observational techniques for detecting anti-Quark Nuggets (anti-QNs) with modern telescopes. Anti-QNs are compact composite objects of antiquark matter…

星系天体物理 · 物理学 2024-11-18 V. V. Flambaum , I. B. Samsonov

It has been recently claimed that radio observations of nearby spiral galaxies essentially rule out a dark matter source for the galactic haze. Here we consider the low energy thermal emission from a quark nugget dark matter model in the…

星系天体物理 · 物理学 2016-05-04 K. Lawson , A. R. Zhitnitsky

Nuclear Coulomb potential at completely ionized and extremely thin atmosphere can leaks to a macroscopic spatial scale. This effect is used to explain the difference between the energy spectra of cosmic-ray electrons around $1 TeV$ measured…

高能天体物理现象 · 物理学 2019-09-12 Wei Zhu , Jianhong Ruan , Peng Liu , Lei Feng , Fan Wang

We construct empirical models of the diffuse gamma-ray background toward the Galactic Center. Including all known point sources and a template of emission associated with interactions of cosmic rays with molecular gas, we show that the…

高能天体物理现象 · 物理学 2014-07-23 Kevork N. Abazajian , Nicolas Canac , Shunsaku Horiuchi , Manoj Kaplinghat

From the observed results of the space distribution of quasars we deduced that neutrino mass is about10^(-1) eV. The fourth stable elementary particle (delta particle) with mass about 10^(0) eV can help explain the energy resource mechanism…

综合物理 · 物理学 2024-01-30 Xiaodong Huang , Wuliang Huang

Current evidence for dark matter in the universe does not exclude heavy composite nuclear-density objects consisting of bound quarks or antiquarks over a significant range of masses. Here we analyze one such proposed scenario, which…

宇宙学与河外天体物理 · 物理学 2013-05-30 Peter. W. Gorham

"Dark quark nuggets", a lump of dark quark matter, can be produced in the early universe for a wide range of confining gauge theories and serve as a macroscopic dark matter candidate. The two necessary conditions, a nonzero dark baryon…

高能物理 - 唯象学 · 物理学 2019-11-26 Yang Bai , Andrew J. Long , Sida Lu

Since the report of the PeV-TeV neutrinos by the IceCube Collaboration, various particle physics models have been proposed to explain the neutrino spectrum by dark matter particles decaying into neutrinos and other Standard Model…

高能物理 - 唯象学 · 物理学 2018-01-17 Nagisa Hiroshima , Ryuichiro Kitano , Kazunori Kohri , Kohta Murase

Magnetized Quark Nuggets (MQNs) are a recently proposed dark-matter candidate consistent with the Standard Model and with Tatsumi's theory of quark-nugget cores in magnetars. Previous publications have covered their formation in the early…

Quark nuggets are theoretical objects composed of approximately equal numbers of up, down, and strange quarks and are also called strangelets and nuclearites. They have been proposed as a candidate for dark matter, which constitutes about…

We argue that we may be able to sort out dark matter models in which electrons are generated through the annihilation and/or decay of dark matter, by using a fact that the initial energy spectrum is reflected in the cosmic-ray electron flux…

天体物理学 · 物理学 2010-04-14 Chuan-Ren Chen , Koichi Hamaguchi , Mihoko M. Nojiri , Fuminobu Takahashi , Shoji Torii

It has recently been claimed that dark matter in form of quark nuggets cannot account for more than 20% of the dark matter density. This claim is based on constraints on the neutrino flux in 20-50 MeV range where the sensitivity of…

高能天体物理现象 · 物理学 2017-04-05 Kyle Lawson , Ariel R. Zhitnitsky

Thermal relics lighter than an MeV contribute to the energy density of the universe at the time of nucleosynthesis and recombination. Constraints on extra radiation degrees of freedom typically exclude even the simplest of such dark…

高能物理 - 唯象学 · 物理学 2019-05-29 Asher Berlin , Nikita Blinov

We advocate the idea that the surprising emission of extreme ultra violet (EUV) radiation and soft x-rays from the Sun are powered externally by incident dark matter (DM) particles. The energy and the spectral shape of this otherwise…

太阳与恒星天体物理 · 物理学 2017-11-08 Ariel Zhitnitsky

The quest for Dark Matter signals in the gamma-ray sky is one of the most intriguing and exciting challenges in astrophysics. In this paper we perform the analysis of the energy spectrum of the \textit{Fermi bubbles} at different latitudes,…

高能物理 - 唯象学 · 物理学 2013-12-31 Wei-Chih Huang , Alfredo Urbano , Wei Xue
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