Results 91 to 100 of about 771,659 (382)
Resource Letter: Gravitational Lensing [PDF]
, 2012 This Resource Letter provides a guide to a selection of the literature on gravitational lensing and its applications. Journal articles, books, popular articles, and websites are cited for the following topics: foundations of gravitational lensing, foundations of cosmology, history of gravitational lensing, strong lensing, weak lensing, and microlensing.
arxiv +1 more source
SDSS J131339.98+515128.3: A new gravitationally lensed quasar selected based on near-infrared excess [PDF]
Mon.Not.Roy.Astron.Soc.382:412-418,2007, 2007 We report the discovery of a new gravitationally lensed quasar, SDSS J131339.98+515128.3, at a redshift of 1.875 with an image separation of 1.24". The lensing galaxy is clearly detected in visible-light follow-up observations. We also identify three absorption-line doublets in the spectra of the lensed quasar images, from which we measure the lens ...
arxiv +1 more source
Applied Sciences, 2018 We propose a novel design method for multi-focal metallic Fresnel zone plates (MFZPs), which exploits the phase selection rule by putting virtual point sources (VPSs) at the desired focal points distant to the MFZP plane.
Jinseob Kim +5 more
doaj +1 more source
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose Breast cancer is a neoplastic disease with high prevalence among women. Radiotherapy is one of the principal treatment modalities for this disease, but it poses significant challenges. This study aimed to compare and evaluate the technical and dosimetric performance of conventional C‐arm linac systems and a new design, Halcyon, in the ...
Mustafa Çağlar +8 more
wiley +1 more source
, 2006 The response of the ``perfect lens'', consisting of a slab of lossless material of thickness $d$ with $\epsilon=\mu=-1$ at one frequency $\omega_0$ is investigated.
Boardman +28 more
core +2 more sources
Classical and Quantum Gravity, 2010 Invited review article to appear in Classical and Quantum Gravity, 85 pages, 15 ...
openaire +3 more sources
Prospects of observation of gravitationally lensed sources by space submillimeter telescopes [PDF]
, 2019 In the current paper we consider the prospects of observation of gravitationally lensed sources in far-infrared and submillimeter wavelength ranges by the future space telescopes equipped with actively cooled main mirrors. We consider the possibility of solving some of the important cosmological and astrophysical scientific tasks by observation of ...
arxiv +1 more source
FLASH: Faint Lenses from Associated Selection with Herschel [PDF]
arXiv, 2023 We report the ALMA Band 7 observations of 86 Herschel sources that likely contain gravitationally-lensed galaxies. These sources are selected with relatively faint 500 $\mu$m flux densities between 15 to 85 mJy in an effort to characterize the effect of lensing across the entire million-source Herschel catalogue. These lensed candidates were identified
arxiv
Indian Journal of Ophthalmology, 2019 Purpose: To compare the posterior capsular opacification (PCO) after implantation of three types of hydrophobic square edge intraocular lenses (IOLs). Methods: A single-center, hospital-based, cross-sectional, observational study was conducted wherein ...
H Vijaya Pai +2 more
doaj +1 more source
Radiotherapy medical physics in the Philippines: A contemporary overview
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose With cancer ranking as the third leading cause of death in the Philippines and a disparity in healthcare resources across regions, this research aimed to assess the state of radiotherapy medical physics in the country. Methodology The study utilized a comprehensive online survey with 94 structured questions answered by 19 clinics ...
John Paul C. Cabahug +4 more
wiley +1 more source