搜索结果: 1-7 共查到“天体物理学 Measuring”相关记录7条 . 查询时间(0.064 秒)
A method is presented here for investigating variations in the upper end of the stellar Initial Mass Function (IMF) by probing the production rate of ionizing photons in unresolved, compact star clust...
Measuring the flatness of focal plane for very large mosaic CCD camera
Measuring the flatness focal plane mosaic CCD camera
2011/1/13
Large mosaic multiCCD camera is the key instrument for modern digital sky survey. DECam is an extremely red sensitive 520 Megapixel camera designed for the incoming Dark Energy Survey (DES). It is con...
Measuring primordial non-Gaussianity through weak lensing peak counts
Measuring primordial non-Gaussianity weak lensing peak counts
2011/1/11
We explore the possibility of detecting primordial non-Gaussianity of the local type using weak lensing peak counts. We measure the peak abundance in sets of simulated weak lensing maps corresponding ...
Measuring the escape velocity and mass profiles of galaxy clusters beyond their virial radius
gravitation galaxies clusters general techniques miscellaneous cosmology miscellaneous cosmology
2010/11/9
The caustic technique uses galaxy redshifts alone to measure the escape velocity and mass profiles of galaxy clusters to clustrocentric distances well beyond the virial ra-dius, where dynamical equili...
Measuring the Galaxy Cluster Bulk Flow from WMAP data
Cosmology cosmic microwave background observations diffuse radiation
2010/11/15
We have looked for bulk motions of galaxy clusters in the WMAP 7 year data. We isolate the
kinetic Sunyaev-Zeldovich (SZ) signal by filtering the WMAP Q, V and W band maps with multifrequency matched...
An Optimal Approach for Measuring the Integrated Sachs-Wolfe Effect
Cosmology and Extragalactic Astrophysics (astro-ph.CO) General Relativity and Quantum Cosmology (gr-qc)
2010/12/28
One of the main challenges of modern cosmology is to understand the primordial fluctuations of the early Universe and the nature of the mysterious dark energy which causes the cosmic acceleration. The...
Measuring the masses of compact objects in low-mass X-ray binaries
compact objects low-mass X-ray binaries
2009/6/17
Measuring the masses of compact objects in low-mass X-ray binaries。