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Dark Energy Survey reveals most accurate measurement of dark matter structure in the universe（图）
Dark Energy Survey most accurate measurement dark matter structure the universe
2017/9/4
Imagine planting a single seed and, with great precision, being able to predict the exact height of the tree that grows from it. Now imagine traveling to the future and snapping photographic proof tha...
Future constraints on variations of the fine structure constant from combined CMB and weak lensing measurements
Future constraints variations fine structure constant combined CMB weak lensing measurements
2012/2/21
We forecast the ability of future CMB and galaxy lensing surveys to constrain variations of the fine structure constant. We found that lensing data, as those expected from satellite experiments as Euc...
Kneelike structure in the spectrum of the heavy component of cosmic rays observed with KASCADE-Grande
ultra-high energy cosmic rays KASCADE-Grande composition extensive air shower
2011/10/20
We report the observation of a steepening in the cosmic ray energy spectrum of heavy primary particles at about $8 \times 10^{16}$ eV. This structure is also seen in the all-particle energy spectrum, ...
The cluster structure of the inner crust of neutron stars in the Hartree-Fock-Bogoliubov approach
cluster structure inner crust neutron stars approach
2011/10/17
We analyse how the structure of the inner curst is influenced by the pairing correlations. The inner-crust matter, formed by nuclear clusters immersed in a superfluid neutron gas and ultra-relativisti...
Subaru weak-lensing study of A2163: bimodal mass structure
Subaru weak-lensing study A2163 bimodal mass structure
2011/8/24
We present a weak-lensing analysis of the merging cluster A2163 using Subaru/Suprime-Cam and CHFT/Mega-Cam data and discuss the dynamics of this cluster merger, based on complementary weak-lensing, X-...
The Interaction of High-Speed Turbulence with Flames: Global Properties and Internal Flame Structure
Turbulent premixed combustion, Turbulence, Flamelet, Flame structure, Hydrogen
2011/9/14
We study the dynamics and properties of a turbulent flame, formed in the presence of subsonic, high-speed, homogeneous,isotropic Kolmogorov-type turbulence in an unconfined system. Direct numerical si...
The interior structure of astronomically realistic rotating black holes 3. Charged black holesThe interior structure of astronomically realistic rotating black holes 3. Charged black holes
The interior structure black holes
2011/1/13
This paper extends to the case of charged rotating black holes the conformally stationary, axisymmetric, separable solutions presented for uncharged rotating black holes in a companion paper. In the p...
The interior structure of astronomically realistic rotating black holes 2. Uncharged black holes
The interior structure black holes
2011/1/13
An exact solution is obtained for the interior structure of a uncharged rotating black hole that accretes a collisionless fluid. The solutions are conformally stationary, axisymmetric, and separable. ...
The interior structure of astronomically realistic rotating black holes 1. Motivation and summary
The interior structure black holes
2011/1/13
This paper motivates, summarizes, and discusses a new set of exact solutions for the interior structure of accreting, rotating black holes. The solutions are conformally stationary, axisymmetric, and...
Structure in phase space associated with spiral and bar density waves in an N-body galactic disk
bar density waves N-body galactic disk
2011/1/11
An N-body simulation of a Galactic disk is used to study the stellar phase space distribution or velocity distributions in different local neighborhoods. Pattern speeds identified in Fourier spectrogr...
MUSTANG High Angular Resolution Sunyaev-Zel'dovich Effect Imaging of Sub-Structure in Four Galaxy Clusters
MUSTANG High Angular Resolution Sunyaev-Zel'dovich Effect Imaging
2011/1/11
We present 10" to 18" images of four massive clusters of galaxies through the Sunyaev-Zel'dovich Effect (SZE). These measurements, made at 90~GHz with the MUSTANG receiver on the Green Bank Telescope ...
An analysis of structure in rotation measure (RM) across the sky based on the RM catalog of Taylor et al. (2009) is presented. Several resolved RM structures are identified with structure in the local...
Impact of Primordial Ultracompact Minihaloes on the Intergalactic Medium and First Structure Formation
intergalactic medium dark matter cosmology theory early Universe galaxies structure
2010/11/12
The effects of dark matter annihilation on the evolution of intergalactic medium(IGM) in the early Universe can be more important if dark matter structure is more concentrated. Ultracompact Minihaloes...
Scalar models for the generalized Chaplygin gas and the structure formation constraints
Scalar models generalized Chaplygin gas structure formation constraints
2010/11/9
The generalized Chaplygin gas model represents a tentative to unify dark matter and dark
energy. It is characterized by a fluid with an equation of state p = −A/ . It can be obtained from a ge...
Effects of large-scale structure on the accuracy of weak lensing mass measurements
cosmology observations dark matter large-scale structure of Uni-verse galaxies clusters
2010/11/10
Weak gravitational lensing has become an important method to determine the masses of galaxy clusters. The intrinsic shapes of the galaxies are a dominant source of uncertainty, but there are other lim...