Results 61 to 70 of about 171,489 (202)
Probing the Universe with Weak Lensing [PDF]
Ann.Rev.Astron.Astrophys. 37 (1999) 127-189, 1998 Gravitational lenses can provide crucial information on the geometry of the Universe, on the cosmological scenario of formation of its structures as well as on the history of its components with look-back time. In this review, I focus on the most recent results obtained during the last five years from the analysis of the weak lensing regime.
arxiv +1 more source
Weak Gravitational Lensing—The Need for Surveys [PDF]
Symposium - International Astronomical Union, 1997 Light rays from distant sources are deflected if they pass near an intervening matter inhomogeneity. This gravitational lens effect is responsible for the well-established lens systems like multiple-imaged QSOs, (radio) ‘Einstein’ rings, the giant luminous arcs in clusters of galaxies, and the flux variations of stars in the LMC and the Galactic bulge ...
openaire +2 more sources
Photochemical Surface Degradation in Spiropyran Based Films
ChemPhotoChem, EarlyView.Monitoring of photoswitching surface properties using molecular photochromes can give misleading results due to primary inner filter effects. The surface layer can degrade but then protect deeper layers from damage, leading to misassignment of the origin of light driven changes in surface energy.
Ruben Feringa +2 more
wiley +1 more source
Weak Lensing of the CMB: Extraction of Lensing Information from the Trispectrum [PDF]
New Astron. 8 (2003) 231-253, 2002 We discuss the four-point correlation function, or the trispectrum in Fourier space, of CMB temperature and polarization anisotropies due to the weak gravitational lensing effect by intervening large scale structure. We discuss the squared temperature power spectrum as a probe of this trispectrum and, more importantly, as an observational approach to ...
arxiv +1 more source
Conflict Resolution Quarterly, EarlyView.ABSTRACT Building on Walter Isard's location and gravity theories in economics, we extend his trade model to better understand its core principles, including commercial attraction, center of gravity in markets, and favorable location for exporting firms.
Luigi Capoani +2 more
wiley +1 more source
The Depositional Record, EarlyView.The Upper Permian Castile Formation of the Delaware Basin, a 515.3 m (1690.6 ft) thick deep‐water evaporitic sequence dominated by anhydrite and halite, is the focus of this study. This study's sedimentological and geochemical analysis of cores from the basin's centre and margin reveals that dynamic reflux of deep hypersaline brines significantly ...
Ander Martinez‐Doñate +6 more
wiley +1 more source
Reputational risk and target selection: An evidence from China
International Journal of Finance &Economics, EarlyView.Abstract Do bidders with pre‐deal lower (higher) reputational risk select targets with lower (higher) reputational risk in the existing and new markets? Past research on the role of reputation suggests that reputable firms make conservative investment decisions to maintain their reputation.
Tanveer Hussain +2 more
wiley +1 more source
Bloom compression alongside marine heatwaves contemporary with the Oregon upwelling season
Limnology and Oceanography, EarlyView.Abstract Marine heatwave (MHW) events have led to acute decreases in primary production and phytoplankton biomass in the surface ocean, particularly at the mid latitudes. In the Northeast Pacific, these anomalous events have occasionally encroached onto the Oregon shelf during the ecologically important summer upwelling season.
Ian T. Black +2 more
wiley +1 more source
arXiv, 2003 The basic equations and geometry of gravitational lensing are described, as well as the most important contexts in which it is observed in astronomy: strong lensing, weak lensing and microlensing.
arxiv
Gravitational Lensing in Modified Gravity and the Lensing of Merging Clusters without Dark Matter [PDF]
arXiv, 2006 Gravitational lensing in a modified gravity (MOG) is derived and shown to describe lensing without postulating dark matter. The recent data for merging clusters identified with the interacting cluster 1E0657-56 is shown to be consistent with a weak lensing construction based on MOG without exotic dark matter.
arxiv