Results 11 to 20 of about 173,637 (267)
Six spiral galaxies lacking dark matter [PDF]
Scientific ReportsDark matter is believed to be the essential building blocks of galaxy formation. While instances of galaxies lacking dark matter have been observed, these occurrences are typically linked to specific formation mechanisms, making them stand out as unique ...
Cheng-Yu Chen, Chorng-Yuan Hwang
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Universe, 2023 Eicheon properties are discussed. It is shown that the eicheon surface allows setting a boundary condition for the vacuum polarization and obtaining a solution describing the dark matter tail in the Milky Way Galaxy. That is, the dark matter in the Milky
Sergey L. Cherkas +1 more
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Boosting asymmetric charged DM via thermalization
Journal of High Energy Physics, 2023 We consider a dark sector scenario with two dark matter species with opposite dark U(1) charges and an asymmetric population comprising some fraction of the dark matter abundance.
Michael Geller, Zamir Heller-Algazi
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Dark matter mass loss in galaxy flybys: dependence on impact parameter [PDF]
Serbian Astronomical Journal, 2022 Galaxy flybys, interactions where two independent halos inter-penetrate but detach at a later time and do not merge, occur frequently at lower redshifts.
Mitrašinović A.
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Dark matter halo properties from galaxy–galaxy lensing★ [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 We present results for a galaxy-galaxy lensing study based on imaging data from the Canada-France-Hawaii Telescope Legacy Survey Wide. From a 12 million object multi-colour catalogue for 124 deg^2 of photometric data in the u*g'r'i'z' filters we compute photometric redshifts (with a scatter of _{ z/(1+z)} = 0.033 and an outlier rate of =2.0 per ...
Brimioulle, F. +4 more
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DARK MATTER EQUILIBRIA IN GALAXIES AND GALAXY SYSTEMS [PDF]
The Astrophysical Journal, 2009 [abridged] In the dark matter (DM) halos embedding galaxies and galaxy systems the `entropy' K = ^2 / ^{2/3} (a quantity that combines the radial velocity dispersion with the density ) is found from intensive N-body simulations to follow a powerlaw run K ~ r^ throughout the halos' bulk, with around 1.25.
Lapi, A., Cavaliere, A.
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The Galaxy Number Density Profile of Halos
The Astrophysical Journal, 2023 More precise measurements of galaxy clustering will be provided by the next generation of galaxy surveys, such as DESI, WALLABY, and the Square Kilometre Array.
Fei Qin +3 more
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Tilted Dark Halos Are Common and Long-lived, and Can Warp Galactic Disks
The Astrophysical Journal Letters, 2023 In the Lambda cold dark matter paradigm, the dark halo governs the gravitational potential within which a galaxy can form and evolve. In this Letter we show that the present-day inner ( r < 50 kpc) dark halo can be significantly misaligned with the ...
Jiwon Jesse Han +3 more
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Galaxy clustering and dark energy [PDF]
Monthly Notices of the Royal Astronomical Society, 2004 ISSN:0035 ...
Munshi, Dipak +2 more
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Chemie Ingenieur Technik, EarlyView., 2023 Let us consider an alternative perspective on climate change: The sum of solar radiation and heat generated by human activity result in a net energy input of 1.96 times that of the Sun on the Earth's surface. The expanding global population is expected to exacerbate this issue. Potential solutions are proposed, including replacement and heat recycling.
Martin Bertau, Gerald Steiner
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