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The Hubble Constant measured from the anisotropy in the cosmic microwave background (CMB) is shown to be independent of small changes from the standard model of the redshift dependence of dark energy....
Encoding many channels in the same frequency through radio vorticity: first experimental test
Encoding many channels frequency through radio vorticity experimental test
2011/10/18
We have shown experimentally that it is possible to propagate and use the properties of twisted non-monochromatic incoherent radio waves to simultaneously transmit to infinity more radio channels on t...
Analogue-dynamical Prediction of Numerical Model Errors in the Mid-Lower Reaches of the Yangtze River
-Principal Component Analysis Numerical Model Errors Analogue-dynamical Prediction
2011/9/30
A new prediction error correction scheme based on 74 circulation characteristics data provided by Weather Diagnostic Forecasting Division of National Climate Center, which is designed to develop the O...
Holographic Measurement and Improvement of the Green Bank Telescope Surface
Holographic Measurement Improvement Green Bank Telescope Surface
2011/10/8
We describe the successful design, implementation, and operation of a 12 GHz holography system installed on the Robert C. Byrd Green Bank Telescope (GBT). We have used a geostationary satellite beacon...
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...
The Allen Telescope Array Pi GHz Sky Survey II. Daily and Monthly Monitoring for Transients and Variability in the Bootes Field
Monthly Monitoring Transients Variability Bootes Field
2011/9/29
We present results from daily radio continuum observations of the Bootes field as part of the Pi GHz Sky Survey (PiGSS). These results are part of a systematic and unbiased campaign to characterize va...
Oscillatory motions observed in eruptive filaments
Sun: fi laments prominences – Sun:oscillations – Sun:atmosphere.
2011/9/27
Context: The origin of the variable component of the solar wind is of great intrinsic interest for heliophysics and space-weather, e.g. the initiation of coronal mass ejections, and the problem of mas...
The Kepler Mission is a Discovery mission supported by NASA's Science Mission Directorate, and its primary aim is to discover Earth-sized planets in the habitable zone of solar-type stars. The space t...
Software for Interactively Visualizing Solar Vector Magnetograms of Udaipur Solar Observatory
Instrumentation polarimetry spectroscopy
2010/9/15
The Solar Vector Magnetograph (SVM) at Udaipur Solar Observatory saw its first light in April 2005. The retrieval of vector fields from the imaging spectro-polarimetric observational data requires a s...
The Ks-band Tully–Fisher Relation – A Determination of the Hubble Parameter from 218 ScI Galaxies and 16 Galaxy Clusters
Distance scale—galaxies distances and redshifts
2010/9/15
The value of Hubble parameter (H0) is determined using the morphologically type dependent Ks-band Tully–Fisher Relation (K-TFR).The slope and zero point are determined using 36 calibrator galaxies wit...
In this paper are presented recalculated elliptical and Thiel-Innes
orbitatal elements for the followingdouble stars:WDS05255-0033,WDS12272+2701,
WDS 13336+2944 and WDS 21031+0132 (two versions). Th...
In this paper are presented recalculated elliptical and Thiel-Innes
orbitatal elements for the followingdouble stars:WDS05255-0033,WDS12272+2701,
WDS 13336+2944 and WDS 21031+0132 (two versions). Th...