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Method for decoding asteroid interiors could help aim asteroid-deflecting missions（图）
小行星内部 小行星偏转 自旋变化
2023/6/9
NASA hit a bullseye in late September with DART, the Double Asteroid Redirection Test, which flew a spacecraft straight at the heart of a nearby asteroid. The one-way kamikaze mission smashed into the...
New method may resolve difficulty in measuring universe's expansion（图）
New method difficulty measuring universe
2019/10/23
Astronomers using National Science Foundation radio telescopes have demonstrated how a combination of gravitational-wave and radio observations, along with theoretical modeling, can turn the mergers o...
Mass segregation and fractal substructure in young massive clusters: (I) the McLuster code and method calibration
galaxies: star clusters: individual: R136 — galaxies: star formation —methods: data analysis — Magellanic Clouds
2011/10/8
By analysing models of the young massive cluster R136 in 30 Doradus, set-up using the herewith introduced and publicly made available code McLuster, we investigate and compare different methods for de...
A method for filling gaps in solar irradiance and in solar proxy data
method filling gaps solar irradiance solar proxy
2011/10/13
Data gaps are ubiquitous in spectral irradiance data, and yet, little effort has been put into finding robust methods for filling them. We introduce a data-adaptive and nonparametric method that allow...
A Model Independent Method to Study Dark Matter induced Leptons and Gamma rays
A Model Independent Method to Study Dark Matter induced Leptons and Gamma rays
2011/10/17
We propose a novel method to directly determine dark matter induced electron/positron spectrum at the source from experimental measurements at the earth, without reference to specific particle physics...
Accurate Group Delay Measurement for Radial Velocity Instruments Using the Dispersed Fixed Delay Interferometer Method
Radial Velocity Dispersed Interferometer Method
2011/9/30
The Dispersed Fixed Delay Interferometer (DFDI) method is attractive for its low cost, compact size and multi-object capability in precision radial velocity (RV) measurements. The phase shift of fring...
Evaluation by Numerical Simulations of the Block Adjustment Method in Small Field CCD Astrometry
CCD Astrometry Numerical Simulations Block Adjustment Method
2009/6/4
Evaluation by Numerical Simulations of the Block Adjustment Method in Small Field CCD Astrometry
Homotopy Continuation Method of Arbitrary Order of Convergence for Solving the Hyperbolic Form of Kepler’s Equation
hyperbolic Kepler’s equation initial value problem orbit determination
2010/9/16
In this paper, an efficient iterative method of arbitrary integer order of convergence ≥ 2 has been established for solving the hyperbolic form of Kepler’s equation. The method is of a dynamic nature ...