Results 61 to 70 of about 9,025,079 (233)
Dizhen xuebao我国地震地电场观测时的漏电干扰问题会影响到观测质量和地震监测效能。针对这一实际问题，本文提出了点源干扰源定位方法。该方法首先建立地表点源对地电场观测影响模型，根据模型计算点源对地电场观测的干扰幅度，然后求解干扰源相对于中心电极的位置。将定位方法应用于高邮地震台和汉王地震台实际干扰源排查工作中，定位结果与实际干扰源位置基本一致，测区外干扰源定位误差小于2%，测区内干扰源定位误差小于20 m，并对影响计算误差的因素进行了分析。两个台站的实际应用表明 ...
Yu Zhang +4 more
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A New Analysis Method for Reconstructing the Arrival Direction of TeV Gamma-rays Using a Single Imaging Atmospheric Cherenkov Telescope [PDF]
, 2000 We present a method of atmospheric Cherenkov imaging which reconstructs the unique arrival direction of TeV gamma rays using a single telescope. The method is derived empirically and utilizes several features of gamma-ray induced air showers which ...
Akerlof +15 more
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On the detection of point sources in Planck LFI 70 GHz CMB maps based on cleaned K-map
, 2015 We use the Planck LFI 70GHz data to further probe point source detection technique in the sky maps of the cosmic microwave background (CMB) radiation. The method developed by Tegmark et al.
Kashin, A. L. +3 more
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Time-dependent point source search methods in high energy neutrino astronomy [PDF]
Astroparticle Physics, 2010 We present maximum-likelihood search methods for time-dependent fluxes from point sources, such as flares or periodic emissions. We describe a method for the case when the time dependence of the flux can be assumed a priori from other observations, and we additionally describe a method to search for bursts with an unknown time dependence.
Braun, Jim +5 more
openaire +2 more sources
The NN2 Flux Difference Method for Constructing Variable Object Light Curves
, 2005 We present a new method for optimally extracting point-source time variability information from a series of images. Differential photometry is generally best accomplished by subtracting two images separated in time, since this removes all constant ...
Barris B. +13 more
core +1 more source
Generic effective source for scalar self-force calculations [PDF]
, 2012 A leading approach to the modelling of extreme mass ratio inspirals involves the treatment of the smaller mass as a point particle and the computation of a regularized self-force acting on that particle.
B. S. DeWitt +11 more
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Three-dimensional point-source localization method based on position-sensitive neutron detectors
He jishuBackgroundThe use of neutron-based methods to locate radioactive sources within sealed containers holds great practical significance.PurposeThis study aims to locate an AmLi source within the detection space of four position-sensitive neutron detectors ...
LIANG Qinglei +5 more
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Fields from point sources using the aperture field method [PDF]
IEEE Transactions on Antennas and Propagation, 1991 It is shown that the field of arbitrary point sources can be found from the aperture field method. It is demonstrated that the exact result in the far field is easily obtained for an electric Hertzian dipole in free space. >
openaire +2 more sources
, 2009 We present a coherent theoretical framework for computing gravitational lensing effects and redshift-space distortions in an inhomogeneous universe and investigate their impacts on galaxy two-point statistics.
A. J. S. Hamilton +9 more
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Ghost Images in Helioseismic Holography? Toy Models in a Uniform Medium [PDF]
, 2018 Helioseismic holography is a powerful technique used to probe the solar interior based on estimations of the 3D wavefield. Porter--Bojarski holography, which is a well-established method used in acoustics to recover sources and scatterers in 3D, is also ...
Yang, Dan
core +2 more sources