Results 111 to 120 of about 33,060 (268)

A Lens Finder Map to Check Claimed High-z Galaxies behind SMACS J0723.3-7327

The Astrophysical Journal
The 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, Sung Kei Li, Jeremy Lim, Tom Broadhurst, Man Cheung Alex Li, James Nianias, Jake Summers, Rogier Windhorst   +7 more
doaj   +1 more source

Mass discrepancy in galaxy clusters as a result of the offset between dark matter and baryon distributions

, 2010
Recent studies of lensing clusters reveal that it might be fairly common for a galaxy cluster that the X-ray center has an obvious offset from its gravitational center which is measured by strong lensing. We argue that if these offsets exist, then X-rays
Allen, Baldi, Bartelmann, Bartelmann, Bo Qin, Bonamente, Bradac, Clowe, Dunn, Gioia, Hong Sheng Zhao, Huan Yuan Shan, Jee, Kneib, Limousin, Loeb, Markevitch, Morandi, Navarro, Nevalainen, Piffaretti, Richard, Sand, Sanderson, Shan, Smith, Tucker, Wu, Wu, Wu, Xu   +30 more
core   +2 more sources

Experimental Investigation of Moisture Movement During Freeze–Thaw Cycles and Its Effect on Physical Rock Weathering in Low‐Porosity Alpine Limestone

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT The progressive weakening of alpine rockwalls through subcritical cracking, driven by repeated low‐magnitude stress processes, plays a key role in alpine rock weathering. Laboratory studies using acoustic emission (AE) monitoring have shown that thermal stresses from freeze–thaw cycling induce crack propagation, with recent work highlighting ...
Andrew Mitchell, Oliver Sass
wiley   +1 more source

Gravitational lensing by a charged black hole of string theory

, 2003
We study gravitational lensing by the Gibbons-Maeda-Garfinkle-Horowitz-Strominger (GMGHS) charged black hole of heterotic string theory and obtain the angular position and magnification of the relativistic images. Modeling the supermassive central object
A. Bhadra, A. Bhadra, A. Sen, C.G. Callan, D. Garfinkle, D. Garfinkle, D. Richstone, D.J. Gross, E.F. Eiroa, G.W. Gibbons, G.W. Gibbons, J. Magorrian, J. Scherk, J.D. Gegenberg, K.S. Virbhadra, K.S. Virbhadra, R. Myers, S. Frittelli, V. Bozza, V. Bozza   +19 more
core   +1 more source

Epistemic diversity and the politics of knowledge in plant disease management: Insights from the Xylella fastidiosa epidemic in southern Italy

PLANTS, PEOPLE, PLANET, EarlyView.
Xylella fastidiosa is a major plant pathogen affecting crops such as grapes, citrus, almonds, and olives, with potentially severe consequences for agricultural production and rural livelihoods worldwide. This paper examines the conflict around the management of the X. fastidiosa outbreak affecting olive trees in southern Italy.
Fabio Gatti, David Ludwig, Phil Macnaghten   +2 more
wiley   +1 more source

Microlensing-Based Studies of the Unresolved Structure of AGNs and the Composition of Lensing Galaxies

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, Gradolph Evencio Mediavilla, Muñoz Jose Antonio   +2 more
doaj   +1 more source

Strong field limit analysis of gravitational retro-lensing

, 2003
We present a complete treatment in the strong field limit of gravitational retro-lensing by a static spherically symmetric compact object having a photon sphere.
A. Bhadra, D.E. Holtz, Diego F. Torres, E. Algol, E.F. Eiroa, Ernesto F. Eiroa, F. De Paolis, K.S. Virbhadra, K.S. Virbhadra, R. Schödel, S. Capozziello, S. Frittelli, V. Bozza, V. Bozza, V. Bozza, V. Bozza   +15 more
core   +1 more source

The Evolution of Autonomous Systems for Planetary Cave Exploration: A Review

Journal of Field Robotics, EarlyView.
ABSTRACT The exploration of Subsurface Access Points (SAPs), such as lava tubes on the Moon and Mars, has gained significant interest due to their potential as stable environments shielded from surface radiation and temperature extremes. These sites are considered high‐value targets for detecting water and signs of ancient life, and assessing their ...
Sarah Swinton, Daniel Mitchell, Jamie Blanche, Euan McGookin, David Flynn   +4 more
wiley   +1 more source

HOLISMOKES

Astronomy & Astrophysics
Strong gravitationally lensed supernovae (LSNe), though rare, are exceptionally valuable probes for cosmology and astrophysics. Upcoming time-domain surveys such as the Vera Rubin Observatory’s Legacy Survey of Space and Time (LSST) offer a major ...
Bag Satadru, Cañameras Raoul, Suyu Sherry H., Schuldt Stefan, Taubenberger Stefan, Andika Irham Taufik, Melo Alejandra   +6 more
doaj   +1 more source

Cluster Reconstruction from Combined Strong and Weak Lensing [PDF]

, 1999
The lensing information provided by multiple images, arclets, and statistical distortions can all be formulated as linear constraints on the arrival-time surface, and hence on the mass distribution.
AbdelSalam, Hanadi, Saha, Prasenjit, Williams, Liliya L. R.   +2 more
core   +3 more sources