Blackwell publishing最新文献_第3页

Elements of Style in Catullus 花柱的要素

Blackwell publishing Pub Date : 2007-12-17 DOI: 10.1002/9780470751565.CH11

George A Sheets

引用次数: 8

Management of Labour and Delivery in the High‐risk Patient 高危患者的分娩管理

Blackwell publishing Pub Date : 2007-11-16 DOI: 10.1002/9780470994955.CH19

K. Ramin

引用次数: 5

Phylogeny and Evolution 系统发育与进化

Blackwell publishing Pub Date : 2007-11-16 DOI: 10.1002/9780470995969.CH4

S. Patek, R. Feldmann, M. Porter, D. Tshudy

引用次数: 20

Textbook of hemophilia 血友病教科书

Blackwell publishing Pub Date : 2005-01-12 DOI: 10.1002/9780470987124

Christine A. Lee, E. Berntorp, W. Hoots

引用次数: 73

Evolution of the density profiles of dark matter haloes 暗物质晕密度分布的演化

Blackwell publishing Pub Date : 2003-12-19 DOI: 10.1111/j.1365-2966.2005.08612.x/abs/

D. Reed, F. Governato, L. Verde, J. Gardner, T. Quinn, J. Stadel, D. Merritt, G. Lake

{"title":"Evolution of the density profiles of dark matter haloes","authors":"D. Reed, F. Governato, L. Verde, J. Gardner, T. Quinn, J. Stadel, D. Merritt, G. Lake","doi":"10.1111/j.1365-2966.2005.08612.x/abs/","DOIUrl":"https://doi.org/10.1111/j.1365-2966.2005.08612.x/abs/","url":null,"abstract":"We use numerical simulations in a ACDM cosmology to model density profiles in a set of 16 dark matter haloes with resolutions of up to seven million particles within the virial radius. These simulations allow us to follow robustly the formation and evolution of the central cusp over a large mass range of 10 11 -10 14 M○., down to approximately 0.5 per cent of the virial radius, and from redshift of 5 to the present, covering a larger range in parameter space than previous works. We confirm that the cusp of the density profile is set at redshifts of 2 or greater and remains remarkably stable to the present time, when considered in non-comoving coordinates. Motivated by the diversity and evolution of halo profile shapes, we fit our haloes to the two-parameter profile, p oc 1/((c γ r/r vir ) γ [1 + (c γ r/r vir )] 3-γ }, where the steepness of the cusp is given by the asymptotic inner slope parameter, y, and its radial extent is described by the concentration parameter, c γ (with c γ defined as the virial radius divided by the concentration radius). In our simulations, we find γ ≃ 1.4 - 0.08 log 10 (M/M*) for haloes of 0.01 M*-1000 M*, with a large scatter of Δγ ∼ ±0.3, where M* is the redshift dependent characteristic mass of collapsing haloes; and c γ ≃ 8.(M/M*) -0.15 , with a large M/M* dependent scatter roughly equal to ± cy. Our redshift zero haloes have inner slope parameters ranging approximately from r -1 (Navarro, Frank and White) to r -1.5 (Moore et al.), with a median of roughly r- 1.3 . This two-parameter profile fit works well for all types of haloes in our simulations, whether or not they show evidence of a steep asymptotic cusp. We also model a cluster in power-law cosmologies of P k n , with n = (0, -1, -2, -2.7). Here we find that the concentration radius and the inner cusp slope are both a function of n, with larger concentration radii and shallower cusps for steeper power spectra. We have completed a thorough resolution study and find that the minimum resolved radius is well described by the mean interparticle separation over a range of masses and redshifts. The trend of steeper and more concentrated cusps for smaller M/M* haloes clearly shows that dwarf-sized ACDM haloes have, on average, significantly steeper density profiles within the inner few per cent of the virial radius than inferred from recent observations. Code to reproduce this profile can be downloaded from http://www.icc.dur.ac.uk/ ∼reed/profile.html.","PeriodicalId":417290,"journal":{"name":"Blackwell publishing","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128264257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 77

The Blackwell Companion to the Sociology of Families 布莱克威尔家庭社会学指南

Blackwell publishing Pub Date : 1900-01-01 DOI: 10.1111/b.9780631221586.2003.00009.x

H. Land

引用次数: 12

A Social History of Byzantium 拜占庭社会历史

Blackwell publishing Pub Date : 1900-01-01 DOI: 10.5860/choice.47-2731

B. Stolte

引用次数: 12

A Companion to the Literature and Culture of the American South 《美国南方文学与文化之伴》

Blackwell publishing Pub Date : 1900-01-01 DOI: 10.5860/choice.42-1924

Susan Street