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200 papers

Laboratory creation of stable magic-number protonated water nanoclusters from amorphous water-ice under simulated astrophysical conditions suggests the possible ejection of such nanoparticles from ubiquitous amorphous water-ice-covered…

General Physics · Physics 2024-02-19 Keith Johnson

Water nanoclusters ejected into interstellar space from abundant amorphous ice-coated cosmic dust offer a hypothetical scenario connecting major mysteries of our universe: dark matter, dark energy, cosmology, astrobiology, and the RNA…

Chemical Physics · Physics 2021-06-24 Keith Johnson

Several lines of evidence suggest that some of the dark matter may be non-baryonic: the non-detection of various plausible baryonic candidates for dark matter inferred, e.g., from galaxy rotation curves and from cluster of galaxy velocity…

Astrophysics · Physics 2007-05-23 David N. Spergel

It is now, generally, believed that the presence of some form of dark matter is essential to explain the flat rotation curves of galaxies, and anomalous large velocities of galaxies in the clusters and superclusters. This dark matter turns…

Astrophysics · Physics 2007-05-23 Mofazzal Azam

A comet-like, but magnitudes smaller, extremely low albedo interstellar meteoroid population of fragile aggregates with solar type composition, measured in space and terrestrially, is most probably the universal dark matter. Although…

Astrophysics · Physics 2007-05-23 Robert K. Soberman , Maurice Dubin

The evidence for the existence of dark matter in the universe is reviewed. A general picture emerges, where both baryonic and non-baryonic dark matter is needed to explain current observations. In particular, a wealth of observational…

High Energy Physics - Phenomenology · Physics 2009-07-09 L. Bergstrom

Dark energy/matter unification is first demonstrated within the framework of a simplified model. Geodetic evolution of a cosmological constant dominated bubble Universe, free of genuine matter, is translated into a specific FRW cosmology…

General Relativity and Quantum Cosmology · Physics 2016-08-31 Aharon Davidson , David Karasik , Yoav Lederer

The origin and composition of the cosmological dark matter remain a mystery. However, upcoming 21-cm measurements during cosmic dawn, the period of the first stellar formation, can provide new clues on the nature of dark matter. During this…

Cosmology and Nongalactic Astrophysics · Physics 2018-06-05 Julian B. Muñoz , Abraham Loeb

The dark matter problem is almost a century old. Since the 1930s evidence has been growing that our cosmos is dominated by a new form of non-baryonic matter, that holds galaxies and clusters together and influences cosmic structures up to…

Cosmology and Nongalactic Astrophysics · Physics 2018-01-25 Laura Baudis

The hot, diffuse gas that fills the largest overdense structures in the Universe -- clusters of galaxies and a web of giant filaments connecting them -- provides us with tools to address a wide array of fundamental astrophysical and…

Cosmology and Nongalactic Astrophysics · Physics 2009-02-24 M. Markevitch , F. Nicastro , P. Nulsen , E. Rasia , A. Vikhlinin , A. Kravtsov , W. Forman , G. Brunetti , C. Sarazin , M. Elvis , G. Fabbiano , A. Hornschemeier , R. Brissenden

Dark Matter is one of the most intriguing riddles of modern astrophysics. The Standard Cosmological Model implies that only 4.5% of the mass-energy of the Universe is baryonic matter and the remaining 95% is unknown. Of this remainder, 22%…

Instrumentation and Methods for Astrophysics · Physics 2010-11-19 Andrzej M. Szelc

Dark Matter might be an accidentally stable baryon of a new confining gauge interaction. We extend previous studies exploring the possibility that the DM is made of dark quarks heavier than the dark confinement scale. The resulting…

High Energy Physics - Phenomenology · Physics 2017-11-21 Andrea Mitridate , Michele Redi , Juri Smirnov , Alessandro Strumia

We know from cosmological and astrophysical observations that more than 80% of the matter density in the Universe is non-luminous, or dark. This non-baryonic dark matter could be composed of neutral, heavy particles, which were…

Astrophysics · Physics 2007-11-27 Laura Baudis

Previous studies have examined the holographic principle as a means of producing dark energy. Here we propose instead the possibility of holographic dark matter. In this case, dark matter does not arise in the framework of particle physics…

Cosmology and Nongalactic Astrophysics · Physics 2026-05-13 Oem Trivedi , Robert J. Scherrer

The original mimetic model was proposed to take the role of dark matter. In this paper we consider possible direct interactions of the mimetic dark matter with other matter in the universe, especially the standard model particles such as…

General Relativity and Quantum Cosmology · Physics 2018-01-17 Liuyuan Shen , Yicen Mou , Yunlong Zheng , Mingzhe Li

We investigate the influence of dark energy on structure formation, within five different cosmological models, namely a concordance $\Lambda$CDM model, two models with dynamical dark energy, viewed as a quintessence scalar field (using a RP…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Cristiano De Boni , Klaus Dolag , Stefano Ettori , Lauro Moscardini , Valeria Pettorino , Carlo Baccigalupi

Matter in the universe has become ``dark'' or ``missing'' through misconceptions about the fluid mechanics of gravitational structure formation. Gravitational condensation occurs on non-acoustic density nuclei at the largest Schwarz length…

Astrophysics · Physics 2007-05-23 Carl H. Gibson

In this paper, we re-evaluate the estimates of dust mass in galaxies and demonstrate that current dust models are incomplete and based on a priori assumptions. These models suffer from a circularity problem and account for only a small…

Astrophysics of Galaxies · Physics 2024-11-28 Václav Vavryčuk

The general arguments for baryonic and galactic dark matter are presented. Limits coming from a variety of theoretical considerations and observations are discussed. The surviving candidates for galactic baryonic dark matter seem most…

Astrophysics · Physics 2009-10-28 Eduard Masso

We entertain the possibility that the phenomena typically attributed to dark matter may have a fundamentally emergent nature, rather than arising from new particle degrees of freedom. To illustrate this idea, we consider a field-theoretic…

High Energy Physics - Phenomenology · Physics 2025-11-13 Christian Canete , Archil Kobakhidze
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