Dark Energy and Dark Matter

A special issue of Universe (ISSN 2218-1997). This special issue belongs to the section "Cosmology".

Deadline for manuscript submissions: 30 September 2024 | Viewed by 1775

Special Issue Editor


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Guest Editor
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China
Interests: dark energy; dark matter; large-scale structure; epoch of reionization; cosmic infrared background

Special Issue Information

Dear Colleagues,

Dark energy and dark matter are of immense importance in current astronomy and physics research. Understanding their nature is of great significance when studying the origin, evolution, and ultimate fate of our Universe, and will promote the development of fundamental physics. Currently, various theoretical models of dark energy and dark matter have been proposed; various cosmological probes or means are used to test these models, such as Type Ia supernova (SN Ia), baryon acoustic oscillations (BAO), cosmic microwave background (CMB), gravitational lensing, galaxy clustering, cosmic void, intensity mapping, direct or indirect detection, etc. In addition, a series of next-generation ground- and space-based cosmological surveys will be launched over the next few years. The next decade is anticipated to be a golden age for cosmological studies, especially in relation to dark energy and dark matter.

This Special Issue aims to collect the latest studies on dark energy, dark matter, and modified gravity, including theories and observational results. Original research studies in the form of letters and articles are welcome. Predictions of future projects or new detection methods are also encouraged.

Prof. Dr. Yan Gong
Guest Editor

Manuscript Submission Information

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Keywords

  • dark energy
  • dark matter
  • modified gravity
  • theoretical model
  • cosmic acceleration
  • cosmic large-scale structure
  • gravitational lensing
  • galaxy clustering
  • intensity mapping
  • cosmological constraint

Published Papers (1 paper)

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Research

27 pages, 4227 KiB  
Article
A Search for Magnetized Quark Nuggets (MQNs), a Candidate for Dark Matter, Accumulating in Iron Ore
by J. Pace VanDevender, T. Sloan and Michael Glissman
Universe 2024, 10(1), 27; https://doi.org/10.3390/universe10010027 - 9 Jan 2024
Viewed by 1214
Abstract
A search has been carried out for Magnetized Quark Nuggets (MQNs) accumulating in iron ore over geologic time. MQNs, which are theoretically consistent with the Standard Models of Physics and of Cosmology, have been suggested as dark-matter candidates. Indirect evidence of MQNs has [...] Read more.
A search has been carried out for Magnetized Quark Nuggets (MQNs) accumulating in iron ore over geologic time. MQNs, which are theoretically consistent with the Standard Models of Physics and of Cosmology, have been suggested as dark-matter candidates. Indirect evidence of MQNs has been previously inferred from observations of magnetars and of non-meteorite impact craters. It is shown in this paper that MQNs can accumulate in taconite (iron ore) and be transferred into ferromagnetic rod-mill liners during processing of the ore. When the liners are recycled to make fresh steel, they are heated to higher than the Curie temperature so that their ferromagnetic properties are destroyed. The MQNs would then be released and fall into the ferromagnetic furnace bottom where they would be trapped. Three such furnace bottoms have been magnetically scanned to search for the magnetic anomalies consistent with trapped MQNs. The observed magnetic anomalies are equivalent to an accumulation rate of ~1 kg of MQNs per 1.2 × 108 kg of taconite ore processed. The results are consistent with MQNs but there could be other, unknown explanations. We propose an experiment and calculations to definitively test the MQN hypothesis for dark matter. Full article
(This article belongs to the Special Issue Dark Energy and Dark Matter)
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