Results 101 to 110 of about 2,655,258 (212)

The formation of satellite galaxies and their associated black holes [PDF]

, 2006
Not ...
Libeskind, Noam Isaac
core  

Sensitivity projections for a dual-phase argon TPC optimized for light dark matter searches through the ionization channel

, 2023
Dark matter lighter than 10 GeV=c2 encompasses a promising range of candidates. A conceptual design for a new detector, DarkSide-LowMass, is presented, based on the DarkSide-50 detector and progress toward DarkSide-20k, optimized for a low-threshold ...
G. Paternoster, A. Gola, Global Argon Dark Matter Collaboration   +2 more
core   +1 more source

The DREAMS Project: Disentangling the Impact of Halo-to-halo Variance and Baryonic Feedback on Milky Way Dark Matter Density Profiles

The Astrophysical Journal
In this work, we utilize a new suite of Milky Way–mass halos from the DREAMS Project, simulated with cold dark matter (CDM), to quantify the influence of baryon feedback and intrinsic halo-to-halo variance on dark matter density profiles.
Alex M. Garcia, Jonah C. Rose, Paul Torrey, Andrea Caputo, Mariangela Lisanti, Andrew B. Pace, Hongwan Liu, Abdelaziz Hussein, Haozhe Liu, Francisco Villaescusa-Navarro, John Barry, Ilem Leisher, Belén Costanza, Jonathan Kho, Ethan Lilie, Jiaxuan Li, Niusha Ahvazi, Aklant Bhowmick, Tri Nguyen, Stephanie O’Neil, Xiaowei Ou, Xuejian Shen, Arya Farahi, Nitya Kallivayalil, Lina Necib, Mark Vogelsberger   +25 more
doaj   +1 more source

On the Pseudo Phase-space Density of Dark Matter Haloes and the Universality of Density Profiles

Open Astronomy, 2015
We examine the radial dependence of the pseudo phase-space density, ρ(r)/σ3(r), for structures on galactic and galaxy cluster scales. We find that it is approximately a power-law only in the range of halo radius resolved by current simulations (down to 0.
Del Popolo A.
doaj   +1 more source

The density profiles of dark matter halos in spiral galaxies

Natural Science, 2012
In spiral galaxies, we explain their non-Keplerian rotation curves (RCs) by means of a non-luminous component embedding their stellar-gaseous disks. Understanding the detailed properties of this component (labelled Dark Matter, DM) is one of the most pressing issues of Cosmology. We investigate the recent relationship (claimed by Walker et al.
Castignani G, Frusciante N, Vernieri D, Salucci, Paolo   +3 more
openaire   +4 more sources

Describing the Nonuniversal Galaxy Merger Timescales in IllustrisTNG: Effects of Host Halo Mass, Baryons, and Sample Selection

The Astrophysical Journal
Galaxy merger timescales are crucial for understanding and modeling galaxy formation in our hierarchically structured Universe. However, previous studies have reported widely varying dependencies of merger timescales on initial orbital parameters and ...
Kun Xu, Y. P. Jing
doaj   +1 more source

Simulating supernova feedback in galaxy disks [PDF]

, 2012
In this thesis I examine supernova feedback in hydrodynamical simulations of galaxy disks. Understanding this process entails the numerical evaluation of cooling in radiative shocks, and we present a set of simulations using two widely used numerical ...
CREASEY, PETER,EDWARD, Creasey, Peter Edward   +1 more
core  

Statistical methods in weak gravitational lensing [PDF]

, 2015
This thesis studies several topics in the area of weak gravitational lensing and addresses some key statistical problems within this subject. A large part of the thesis concerns the measurement of galaxy shapes for weak gravitational lensing and the ...
Kacprzak, T
core  

Dark Matter Distribution in Milky Way analog Galaxies

The Astrophysical Journal
Our current understanding of how dark matter (DM) is distributed within the Milky Way (MW) halo, particularly in the solar neighborhood, is based on either careful studies of the local stellar orbits, model assumptions on the global shape of the MW halo,
Natanael G. de Isídio, K. Menéndez-Delmestre, T. S. Gonçalves, M. Grossi, D. C. Rodrigues, N. Garavito-Camargo, A. Araujo-Carvalho, P. P. B. Beaklini, Y. Cavalcante-Coelho, A. Cortesi, L. H. Quiroga-Nuñez, T. Randriamampandry   +11 more
doaj   +1 more source

Line-of-sight Bias in Dark Matter Inferences from Galaxy Cluster Mergers

The Astrophysical Journal
In collisions of galaxy clusters, the lack of displacement between dark matter and galaxies suggests that the dark matter scattering depth is small. This yields an upper limit on the dark matter cross section if the dark matter column density is known ...
David Wittman, Scott Adler, Rodrigo Stancioli   +2 more
doaj   +1 more source