Self-interacting dark matter on small and large scales
SciPost Physics Proceedings, 2023 In the self-interacting dark matter paradigm (hereafter SIDM), dark matter (DM) is assumed to have non-gravitational interactions with itself. SIDM has been constrained by observations of galaxy clusters. More recently, measurements of large DM densities
Camila A. Correa
doaj +1 more source
Galaxy interactions in compact groups – II. Abundance and kinematic anomalies in HCG 91c [PDF]
, 2015 Galaxies in Hickson Compact Group 91 (HCG 91) were observed with the WiFeS integral field spectrograph as part of our ongoing campaign targeting the ionized gas physics and kinematics inside star forming members of compact groups.
F. Vogt +9 more
semanticscholar +1 more source
On the Effects of Local Environment on Active Galactic Nucleus (AGN) in the Horizon Run 5 Simulation
The Astrophysical Journal, 2023 We use the Horizon Run 5 cosmological simulation to study the effect of galaxy intrinsic properties and the local environment on active galactic nuclei (AGNs) characterized by their threshold of the accretion rate.
Ankit Singh +8 more
doaj +1 more source
SIMULATED GALAXY INTERACTIONS AS PROBES OF MERGER SPECTRAL ENERGY DISTRIBUTIONS [PDF]
, 2014 We present the first systematic comparison of ultraviolet-millimeter spectral energy distributions (SEDs) of observed and simulated interacting galaxies.
L. Lanz +7 more
semanticscholar +1 more source
GALAXY INTERACTIONS IN COMPACT GROUPS. I. THE GALACTIC WINDS OF HCG16 [PDF]
, 2013 Using the WiFeS integral field spectrograph, we have undertaken a series of observations of star-forming galaxies in compact groups. In this first paper dedicated to the project, we present the analysis of the spiral galaxy NGC 838, a member of the ...
F. Vogt, M. Dopita, L. Kewley
semanticscholar +1 more source
The role of dwarf galaxy interactions in shaping the Magellanic System and implications for Magellanic Irregulars [PDF]
, 2012 We present a novel pair of numerical models of the interaction history between the Large and Small Magellanic Clouds (LMC and SMC, respectively) and our Milky Way (MW) in light of recent high-precision proper motions from the Hubble Space Telescope ...
G. Besla +6 more
semanticscholar +1 more source
FAST Reveals New Evidence for M94 as a Merger
The Astrophysical Journal, 2023 We report the first high-sensitivity H i observation toward the spiral galaxy M94 with the Five-hundred-meter Aperture Spherical radio Telescope. From these observations, we discovered that M94 has a very extended H i disk, twice larger than that ...
Ruilei Zhou +6 more
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Star Formation Enhancement in Barred Disk Galaxies in Interacting Galaxy Clusters [PDF]
, 2020 A recent study shows that bars can be induced via interaction of galaxy clusters, but it has been unclear if the bar formation by the interaction between clusters is related to the enhancement of star formation. We study galaxies in 105 galaxy clusters at $0.015
arxiv +1 more source
The importance of galaxy interactions in triggering type II quasar activity [PDF]
, 2012 We present deep Gemini Multi-Object Spectrograph-South optical broad-band images for a complete sample of 20 Sloan Digital Sky Survey selected type II quasars taken from Zakamska et al., with redshifts in the range 0.3 < z < 0.41 and [O iii]λ5007 ...
P. Bessiere +3 more
semanticscholar +1 more source
In the wake of dark giants: new signatures of dark matter self-interactions in equal-mass mergers of galaxy clusters [PDF]
, 2016 Author(s): Kim, SY; Peter, AHG; Wittman, D | Abstract: © 2017 The Authors. Merging galaxy clusters have been touted as one of the best probes for constraining selfinteracting darkmatter, but fewsimulations exist to back up this claim.
Stacy Y. Kim, A. Peter, D. Wittman
semanticscholar +1 more source