Results 121 to 130 of about 61,905 (297)
A deconstruction of methods to derive one-point lensing statistics
The Open Journal of AstrophysicsGravitational lensing is a crucial tool for exploring cosmic phenomena, providing insights into galaxy clustering, dark matter, and dark energy. Given the substantial computational demands of $N$-body simulations, approximate methods like $\texttt ...
Viviane Alfradique +5 more
doaj +1 more source
Executive Function and Entrepreneurial Opportunity Exploitation Under Risk and Uncertainty
Strategic Change, EarlyView.ABSTRACT This study examines how executive functions shape entrepreneurial opportunity exploitation under different knowledge environments. Drawing on Knight's distinction between risk and uncertainty, we conducted a vignette experiment with 200 working adults.
Ipek Koparan +3 more
wiley +1 more source
Strategic Change, EarlyView.ABSTRACT Start‐up CEOs are usually more aligned with the interests of the venture board compared to CEOs in legacy firms, and therefore it is usual to conclude that the traditional agency problem is lower in ventures. In this article, it is argued that this is only half of the story, and that the agency problem is reversed in early ventures such that ...
Glenn Kristiansen
wiley +1 more source
A Lens Finder Map to Check Claimed High-z Galaxies behind SMACS J0723.3-7327
The Astrophysical JournalThe first science image released by the James Webb Space Telescope (JWST) reveals numerous galaxies in the distant background of the galaxy cluster SMACS J0723.3-7327.
Alex Chow +7 more
doaj +1 more source
Strong deflection gravitational lensing
, 2012 In this work are reviewed several aspects of gravitational lensing produced by astrophysical bodies that strongly curve the spacetime in their vicinity. When an object with a photon sphere (e.g. a black hole) is interposed between a source and an observer, in addition to primary and secondary images due to small deflections of the light rays, there are
openaire +2 more sources
Pulsed Laser Ablation in Liquid: Numerical Evaluation of Laser Fluence
physica status solidi (RRL) – Rapid Research Letters, EarlyView.Pulsed laser ablation in liquid is a very powerful technique that allows to synthesize colloidal solution of nanoparticles (NPs) without waste. Herein, a computational approach that given the experimental parameters and draws the laser ray paths inside the experimental apparatus is developed, the effective fluence on the target surface is evaluated ...
Cristiano Lo Pò +3 more
wiley +1 more source
Open Astronomy, 2011 Multiple images of quasars formed by gravitational lensing are typically seen through the lensing galaxy. The granulation of the galaxy in stars or other compact objects induces local (‘microscopic’) but strong fluctuations in the gravitational potential
Gradolph Teresa Mediavilla +2 more
doaj +1 more source
Strong biases in infrared-selected gravitational lenses [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 Note added in proof citing Hezaveh et al. (arXiv:1203.3267); other minor changes made to match page proofs. MNRAS in press. 14 pages, 13 figures.
openaire +3 more sources
Evaluation of video evidence of possible ball lightning
Quarterly Journal of the Royal Meteorological Society, EarlyView.We analyze images of possible ball lightning that appeared less than 10 m from a video camera. The objects' velocity and estimated brightness all agree with typical eyewitness accounts of ball lightning. Though there is an alternative explanation that the objects were sparks from a power‐line arc, we describe analytical techniques that assist in ...
K. Stephan, R. Sonnenfeld, J. Bertoloni
wiley +1 more source
Basic Elements of Strong Gravitational Lensing
Space Science ReviewsAbstract Even when used to describe the same phenomenon, equations, graphics and words each give different perspectives and lead to complementary insights. The basic elements of strong gravitational lensing are introduced here favoring words and graphics over equations whenever possible.
Paul L. Schechter, Jeremy D. Schnittman
openaire +2 more sources