Results 31 to 40 of about 65,765 (275)

Lensing in the Blue. II. Estimating the Sensitivity of Stratospheric Balloons to Weak Gravitational Lensing

The Astronomical Journal, 2023
The Superpressure Balloon-borne Imaging Telescope ( SuperBIT ) is a diffraction-limited, wide-field, 0.5 m, near-infrared to near-ultraviolet observatory designed to exploit the stratosphere’s space-like conditions.
Jacqueline E. McCleary, Spencer W. Everett, Mohamed M. Shaaban, Ajay S. Gill, Georgios N. Vassilakis, Eric M. Huff, Richard J. Massey, Steven J. Benton, Anthony M. Brown, Paul Clark, Bradley Holder, Aurelien A. Fraisse, Mathilde Jauzac, William C. Jones, David Lagattuta, Jason S.-Y. Leung, Lun Li, Thuy Vy T. Luu, Johanna M. Nagy, C. Barth Netterfield, Emaad Paracha, Susan F. Redmond, Jason D. Rhodes, Jürgen Schmoll, Ellen Sirks, Sut Ieng Tam   +25 more
doaj   +1 more source

Second-order weak lensing from modified gravity [PDF]

, 2011
We explore the sensitivity of weak gravitational lensing to second-order corrections to the spacetime metric within a cosmological adaptation of the parameterized post-Newtonian framework.
Caldwell, Robert R., Rhodes, Jason, Vanderveld, R. Ali   +2 more
core   +3 more sources

Gravitational lensing effects of black hole with conformally coupled scalar hair

European Physical Journal C: Particles and Fields, 2023
In this paper, we investigate the gravitational lensing effects in the weak and strong field limits of a static black hole with conformally coupled scalar field.
Qi Qi, Yuan Meng, Xi-Jing Wang, Xiao-Mei Kuang   +3 more
doaj   +1 more source

Weak Gravitational Lensing by Dark Clusters [PDF]

, 2002
We calculate the abundance of dark-matter concentrations that are sufficiently overdense to produce a detectable weak-gravitational-lensing signal. Most of these overdensities are virialized halos containing identifiable X-ray and/or optical clusters ...
Kamionkowski, Marc, Weinberg, Nevin N.
core   +4 more sources

Time delay of photons coupled to Weyl tensor in a regular phantom black hole

European Physical Journal C: Particles and Fields, 2020
Time delay of the photons coupled to the Weyl tensor in a regular phantom black hole is investigated in both weak and strong deflection gravitational lensing. We find that the time delay in the weak deflection lensing strongly depends on the phantom hair
Xu Lu, Yi Xie
doaj   +1 more source

Degeneracy in exotic gravitational lensing [PDF]

, 2002
We present three different theoretically foreseen, but unusual, astrophysical situations where the gravitational lens equation ends up being the same, thus producing a degeneracy problem.
Cooray A., DIEGO F. TORRES, Faraoni V., Lewis A., MARGARITA SAFONOVA, Rees R. J., Safonova M., Torres D. F., Turner E. L., Virbharda K. S.   +9 more
core   +2 more sources

Gravitational lensing by a quantum deformed Schwarzschild black hole

European Physical Journal C: Particles and Fields, 2021
We investigate the weak and strong deflection gravitational lensing by a quantum deformed Schwarzschild black hole and find their observables. These lensing observables are evaluated and the detectability of the quantum deformation is assessed, after ...
Xu Lu, Yi Xie
doaj   +1 more source

Cluster Cosmology Constraints from the 2500 deg2 SPT-SZ Survey: Inclusion of Weak Gravitational Lensing Data from Magellan and the Hubble Space Telescope [PDF]

Astrophysical Journal, 2018
We derive cosmological constraints using a galaxy cluster sample selected from the 2500 deg2 SPT-SZ survey. The sample spans the redshift range 0.25 < z < 1.75 and contains 343 clusters with SZ detection significance ξ > 5.
S. Bocquet, S. Bocquet, J. Dietrich, T. Schrabback, L. Bleem, M. Klein, M. Klein, S. Allen, D. Applegate, M. Ashby, M. Bautz, M. Bayliss, B. Benson, B. Benson, M. Brodwin, E. Bulbul, R. Canning, R. Capasso, J. Carlstrom, J. Carlstrom, C. Chang, C. Chang, I. Chiu, H. Cho, A. Clocchiatti, T. Crawford, A. Crites, A. Crites, T. Haan, S. Desai, M. Dobbs, M. Dobbs, R. Foley, W. Forman, G. Garmire, E. George, E. George, M. Gladders, Anthony H. Gonzalez, S. Grandis, N. Gupta, N. Halverson, J. Hlavacek-Larrondo, J. Hlavacek-Larrondo, H. Hoekstra, G. Holder, W. Holzapfel, Z. Hou, J. Hrubeš, Norden E. Huang, C. Jones, G. Khullar, L. Knox, R. Kraft, Adrian T. Lee, Adrian T. Lee, A. V. D. Linden, D. Luong-Van, A. Mantz, D. Marrone, M. McDonald, J. McMahon, S. Meyer, L. Mocanu, J. Mohr, J. Mohr, R. Morris, S. Padin, S. Padin, S. Patil, C. Pryke, D. Rapetti, C. Reichardt, A. Rest, J. Ruhl, B. Saliwanchik, A. Saro, J. Sayre, K. Schaffer, K. Schaffer, E. Shirokoff, B. Stalder, S. Stanford, S. Stanford, Z. Staniszewski, A. Stark, K. Story, V. Strazzullo, C. Stubbs, K. Vanderlinde, J. Vieira, A. Vikhlinin, R. Williamson, R. Williamson, A. Zenteno   +94 more
semanticscholar   +1 more source

Weak gravitational lensing with the Square Kilometre Array [PDF]

, 2015
We investigate the capabilities of various stages of the SKA to perform world-leading weak gravitational lensing surveys. We outline a way forward to develop the tools needed for pursuing weak lensing in the radio band.
Abdalla, F. B., Bacon, D. J., Bridle, S., Brown, M. L., Camera, S., Harrison, I., Jarvis, M., Joachimi, B., Kitching, T. D., Metcalf, R. B., Miller, L., Patel, P., Pourtsidou, A., Takahashi, K., Zuntz, J. A.   +14 more
core   +3 more sources

Intrinsic and Extrinsic Galaxy Alignment [PDF]

, 2000
We show with analytic models that the assumption of uncorrelated intrinsic ellipticities of target sources that is usually made in searches for weak gravitational lensing due to large-scale mass inhomogeneities (``field lensing'') is unwarranted.
Blandford, Roger D., Catelan, Paolo, Kamionkowski, Marc   +2 more
core   +4 more sources