Results 31 to 40 of about 459,316 (304)

How are galaxies assigned to halos? Searching for assembly bias in the SDSS galaxy clustering

, 2018
Clustering of dark matter halos has been shown to depend on halo properties beyond mass such as halo concentration, a phenomenon referred to as halo assembly bias.
Hahn, ChangHoon, Vakili, Mohammadjavad
core   +1 more source

The Immitigable Nature of Assembly Bias: The Impact of Halo Definition on Assembly Bias

, 2017
Dark matter halo clustering depends not only on halo mass, but also on other properties such as concentration and shape. This phenomenon is known broadly as assembly bias.
Bosch, Frank C. van den, Campbell, Duncan, Diemer, Benedikt, Lange, Johannes U., Mao, Yao-Yuan, Purcell, Chris W., Villarreal, Antonio S., Wang, Kuan, Zentner, Andrew R.   +8 more
core   +1 more source

Implications of Kappa Suprathermal Halo of the Solar Wind Electrons

Frontiers in Astronomy and Space Sciences, 2022
The electron velocity distributions measured in-situ in space plasmas reveal two central populations, a low-energy and highly dense (quasi-)thermal core, and a more diffuse but hotter suprathermal halo. Even if the core contributes much more to the total
Viviane Pierrard, Viviane Pierrard, Marian Lazar, Marian Lazar, Stepan Stverak, Stepan Stverak   +5 more
doaj   +1 more source

Preliminary Assessment of Quantitative Phase Analysis from Focal Construct Tomography

NDT
New methods for real-time materials phase identification based upon focal construct tomography (FCT) have been examined. Such quantitative assessment has significant potential in sectors where in-line analysis is required, including screening within ...
Varsha Samuel, Daniel Spence, Liam Farmer, Simon Godber, Keith Rogers, Anthony Dicken   +5 more
doaj   +1 more source

Relationships between area-level socioeconomic status and urbanization with active transportation, independent mobility, outdoor time, and physical activity among Canadian children

BMC Public Health, 2019
Background Active transportation (AT), independent mobility (IM), and outdoor time are promising ways to increase children’s physical activity. However, in order to create interventions to increase those forms of physical activity, it is important to ...
Christine Delisle Nyström, Joel D. Barnes, Sébastien Blanchette, Guy Faulkner, Geneviève Leduc, Negin A. Riazi, Mark S. Tremblay, François Trudeau, Richard Larouche   +8 more
doaj   +1 more source

Mass Models for Spiral Galaxies from 2-D Velocity Maps

, 2004
We model the mass distributions of 40 high surface brightness spiral galaxies inside their optical radii, deriving parameters of mass models by matching the predicted velocities to observed velocity maps.
Andersen D. R., Arimoto N., Arthur Kosowsky, Bosma A., Bottema R., Corradi R. L. M., de Jong R. S., Eric I. Barnes, J. A. Sellwood, Sofue Y.   +9 more
core   +2 more sources

The Effect of Age, Postoperative Refraction, and Pre- and Postoperative Pupil Size on Halo Size and Intensity in Eyes Implanted with a Trifocal or Extended Depth-of-Focus Lens

Clinical Ophthalmology, 2021
Takeshi Teshigawara,1– 3 Akira Meguro,3 Nobuhisa Mizuki3 1Department of Ophthalmology, Yokosuka Chuoh Eye Clinic, Yokosuka, Kanagawa, 238-0008, Japan; 2Tsurumi Chuoh Eye Clinic, Yokohama, Kanagawa, 230-0051, Japan; 3Department of Ophthalmology, Yokohama ...
Teshigawara T, Meguro A, Mizuki N
doaj  

Assembly of the outer Galactic stellar halo in the hierarchical model

, 2010
We provide a set of numerical N-body simulations for studying the formation of the outer Milky Ways's stellar halo through accretion events. After simulating minor mergers of prograde and retrograde orbiting satellite halo with a Dark Matter main halo ...
Adelman-McCarthy, Belokurov, Binney, Boylan-Kolchin, Bullock, Chiba, Curir, Grillmair, Huang, Miceli, Moore, Navarro, Press, White, Yanny, Zolotov   +15 more
core   +1 more source

On the origin of cold dark matter halo density profiles [PDF]

, 2005
N-body simulations predict that CDM halo-assembly occurs in two phases: 1) a fast accretion phase with a rapidly deepening potential well; and 2) a slow accretion phase characterised by a gentle addition of mass to the outer halo with little change in ...
Katz, Neal, Lu, Yu, Mo, H. J., Weinberg, Martin D.   +3 more
core   +6 more sources

Infection Models for Pine Wilt Disease on the Basis of Vector Behaviors

Population Ecology, EarlyView.
Infection models for pine wilt disease without vector density were built to estimate the transmission coefficient of the pathogenic nematode. The models successfully simulated the annual change in the density of infected trees for four pine stands. ABSTRACT Pine wilt disease is caused by the pinewood nematode (Bursaphelenchus xylophilus Steiner et ...
Katsumi Togashi
wiley   +1 more source