A Self-interacting Dark Matter Solution to the Extreme Diversity of Low-mass Halo Properties [PDF]
The Astrophysical Journal Letters, 2023 The properties of low-mass dark matter (DM) halos appear to be remarkably diverse relative to cold, collisionless DM predictions, even in the presence of baryons.
Ethan O. Nadler, Daneng Yang, Hai-Bo Yu
doaj +2 more sources
Galaxy Zoo: Mergers – Dynamical models of interacting galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 The dynamical history of most merging galaxies is not well understood. Correlations between galaxy interaction and star formation have been found in previous studies, but require the context of the physical history of merging systems for full insight ...
Anthony Holincheck +8 more
semanticscholar +8 more sources
Witnessing the key early phase of quasar evolution: an obscured AGN pair in the interacting galaxy IRAS 20210+1121 [PDF]
, 2010 We report the discovery of an active galactic nucleus (AGN) pair in the interacting galaxy system IRAS 20210+1121 at z = 0.056. An XMM-Newton observation reveals the presence of an obscured (Nh ~ 5 x 10^{23} cm^-2), Seyfert-like (L_{2-10 keV} = 4.7 x 10^{
Arribas +23 more
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Simulations of Dust in Interacting Galaxies [PDF]
AIP Conference Proceedings, 2005 4 pages, 5 figures, to appear in the proceedings of the conference "The Spectral Energy Distribution of Gas-Rich Galaxies", eds. C.C. Popescu & R.J. Tuffs (Heidelberg, October 2004)
Patrik Jönsson +2 more
openalex +4 more sources
The isolated interacting galaxy pair NGC 5426/27 (Arp 271) [PDF]
, 2004 We present H alpha observations of the isolated interacting galaxy pair NGC 5426/27 using the scanning Fabry-Perot interferometer PUMA. The velocity field, various kinematical parameters and rotation curve for each galaxy were derived.
I. Fuentes-Carrera +9 more
openalex +3 more sources
Cold dust in a selected sample of nearby galaxies. I. The interacting galaxy NGC4631 [PDF]
, 2003 We have observed the continuum emission of the interacting galaxy NGC 4631 at 870m and 1.23 mm using the Heinrich-Hertz-Telescope on Mt. Graham and the IRAM 30-m telescope on Pico Veleta.
M. Dumke, M. Krause, R. Wielebinski
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Confronting self-interacting neutrinos with the full shape of the galaxy power spectrum [PDF]
Physical Review D, 2023 A cosmological scenario in which the onset of neutrino free streaming in the early Universe is delayed until close to the epoch of matter-radiation equality has been shown to provide a good fit to some cosmic microwave background (CMB) data, while being ...
D. Camarena +2 more
semanticscholar +1 more source
Self-interacting dark matter and small-scale gravitational lenses in galaxy clusters [PDF]
Physical Review D, 2021 Recently, Meneghetti et al. reported an excess of small-scale gravitational lenses in galaxy clusters. We study its implications for self-interacting dark matter (SIDM), compared with standard cold dark matter (CDM).
Daneng Yang, Hai-Bo Yu
semanticscholar +1 more source
A massive blow for ΛCDM – the high redshift, mass, and collision velocity of the interacting galaxy cluster El Gordo contradicts concordance cosmology [PDF]
, 2020 El Gordo (ACT-CL J0102-4915) is an extremely massive galaxy cluster ($M_{200} \approx 3 \times 10^{15}$ $M_{\odot}$) at redshift $z = 0.87 $ composed of two subclusters with mass ratio 3.6 merging at speed $V_{infall} \approx 2500$ km/s.
Elena Asencio, I. Banik, P. Kroupa
semanticscholar +1 more source
Bibechana, 2021 We present a spectroscopic study of an interacting emission-line dwarf galaxy SDSS J134326.99+431118.7. We analyzed eight-strong emission lines of wavelength in a range of 3902.1Å to 6619.1Å.
Daya Nidhi Chhatkuli +2 more
doaj +3 more sources