搜索结果: 1-11 共查到“天文学 Reconstruction”相关记录11条 . 查询时间(0.168 秒)
Maximum-likelihood reconstruction of photon returns from simultaneous analog and photon-counting lidar measurements
Maximum-likelihood reconstruction photon returns simultaneous analog photon-counting lidar
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2011/10/18
We present a novel method for combining the analog and photon-counting measurements of lidar transient recorders into reconstructed photon returns. The method takes into account the statistical proper...
Reconstruction of f(R, T) gravity describing matter dominated and accelerated phases
Reconstruction gravity describing dominated accelerated phases
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2011/10/12
We investigate the cosmological reconstruction in modified f(R,T) gravity, where R is the Ricci scalar and T the trace of the stress-energy tensor. Special attention is attached to the case in which t...
Simulations of BAO reconstruction with a quasar Lyman-alpha survey
cosmology dark energy - cosmology: LSS - Galaxies: IGM - Galaxies: quasars- Method: numerical
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2011/10/12
The imprint of Baryonic Acoustic Oscillations (BAO) on the matter power spectrum can be constrained using the neutral hydrogen density in the intergalactic medium as a tracer of the matter density. On...
Determination of Acceleration from 3D Reconstruction of Coronal Mass Ejections Observed by STEREO
Determination Acceleration Reconstruction Ejections Observed
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2011/9/30
We employ a three-dimensional (3D) reconstruction technique, for the first time to study the kinematics of six coronal mass ejections (CMEs), using images obtained from the COR1 and COR2 coronagraphs ...
Three-Dimensional Reconstruction of an Erupting Filament with SDO and STEREO Observations
Three-Dimensional Reconstruction Erupting Filament Observations
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2011/9/29
On 2010 August 1, a global solar event was launched involving almost the entire Earth-facing side of the Sun. This event mainly consisted of a C3.2 flare, a polar crown filament eruption and two Earth...
Halo based reconstruction of the cosmic mass density field
galaxies: haloes – groups: general– cosmology: dark matter – large-scale structure of Universe – methods: numerical
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2011/9/28
We present the implementation of a halo based method for the reconstruction of the cosmic mass density field. The method employs the mass density distribution of dark matter haloes and its environment...
A fast 2D image reconstruction algorithm from 1D data for the Gaia mission
methods data analysis
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2011/8/24
A fast 2-dimensional image reconstruction method is presented, which takes as input 1-dimensional data acquired from scans across a central source in different orientations. The resultant reconstructe...
A fast 2D image reconstruction algorithm from 1D data for the Gaia mission
methods: data analysis
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2011/9/26
A fast 2-dimensional image reconstruction method is presented, which takes as input 1-dimensional data acquired from scans across a central source in different orientations. The resultant reconstructe...
Acoustic transient event reconstruction and sensitivity studies with the South Pole Acoustic Test Setup
Instrumentation and Methods for Astrophysics (astro-ph.IM)
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2011/1/5
The South Pole Acoustic Test Setup (SPATS) consists of four strings instrumented with seven acoustic sensors and transmitters each, which are deployed in the upper 500 m of the IceCube holes.
Minimally Parametric Power Spectrum Reconstruction from the Lyman-alpha Forest
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
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2010/12/27
Current results from the Lyman alpha forest assume that the primordial power spectrum of density perturbations follows a simple power law form. We present the first analysis of Lyman alpha data to stu...
Simulation of the Event Reconstruction of Ultra High Energy Cosmic Neutrinos with Askaryan Radio Array
Ultra High Energy Cosmic Neutrinos Askaryan Radio Array
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2010/3/8
Askaryan Radio Array (ARA), a large-scale radio Cherenkov observatory which scientists propose to develop in Antarctica, aims at discovering the origin and evolution of the cosmic accelerators that pr...