Results 21 to 30 of about 335,502 (306)

Strong gravitational lensing by $$Sgr A^*$$ S g r A ∗ and $$M87^*$$ M 87 ∗ black holes embedded in dark matter halo exhibiting string cloud and quintessential field

European Physical Journal C: Particles and Fields
We investigate the strong gravitational lensing phenomena caused by a black hole with a dark matter halo in the presence of cloud string and quintessence.
Niyaz Uddin Molla, Himanshu Chaudhary, G. Mustafa, Farruh Atamurotov, Ujjal Debnath, Dhruv Arora   +5 more
doaj   +2 more sources

Weak Gravitational Lensing [PDF]

, 2005
This review forms the Weak Lensing part of the Saas-Fee Advanced Course on Gravitational Lensing. It describes the basicsm applications and results of weak lensing.
Schneider, Peter
core   +2 more sources

Strong Gravitational Lensing and Dark Energy Complementarity [PDF]

Physical Review D, 2004
In the search for the nature of dark energy most cosmological probes measure simple functions of the expansion rate. While powerful, these all involve roughly the same dependence on the dark energy equation of state parameters, with anticorrelation ...
A. Cooray, A. Goobar, A.N. Davis, B.A. Bassett, C. Alcock, C.P. Ma, D.E. Holz, E.V. Linder, E.V. Linder, E.V. Linder, E.V. Linder, E.V. Linder, E.V. Linder, E.V. Linder, Eric V. Linder, G.F. Lewis, G.M. Bernstein, H-J. Seo, I.M.H. Etherington, J.A. Frieman, K. Yamamoto, M. Kuhlen, M. Oguri, M. Oguri, M. Takada, N. Dalal, N. Sarbu, R. Davé, R.C. Tolman   +28 more
core   +4 more sources

Perturbative signature of substructures in strong gravitational lenses [PDF]

Monthly Notices of the Royal Astronomical Society, 2008
18 pages, 11 ...
C. Alard
openalex   +6 more sources

Cusp-core problem and strong gravitational lensing [PDF]

Research in Astronomy and Astrophysics, 2009
Cosmological numerical simulations of galaxy formation have led to the cuspy density profile of a pure cold dark matter halo toward the center, which is in sharp contradiction with the observations of the rotation curves of cold dark matter-dominated ...
Bartelmann, Begeman, Burkert, Chae, Chen, Chen, Chen, Chen, Chen, Chen, Cooray, Da-Ming Chen, de Blok, de Blok, El-Zant, Falco, Fukugita, Fukugita, Gentile, Inada, Jing, Jing, Kazantzidis, Keeton, Keeton, Keeton, Keeton, Kuzio de Naray, Li, Li, Longair, McGaugh, Nan Li, Navarro, Oguri, Oguri, Oguri, Park, Patnaik, Romano-Diaz, Salucci, Sarbu, Schneider, Simon, Swaters, Tonini, Weinberg, Wen, Wu, Wu, Zhang, Zhang, Zhang   +52 more
core   +3 more sources

Gravitational Lensing at Millimeter Wavelengths [PDF]

Lect.Notes Phys. 608 (2002) 124, 2002
With today's millimeter and submillimeter instruments observers use gravitational lensing mostly as a tool to boost the sensitivity when observing distant objects.
A. Omont, A. Omont, A.C. Fabian, A.J. Barger, A.J. Barger, A.J. Barger, A.P. Rao, A.R. Patnaik, A.R. Patnaik, A.W. Blain, A.W. Blain, A.W. Blain, A.W. Blain, A.W. Blain, C. Borys, C. Ledoux, C. Lidman, C.D. Fassnacht, C.L. Carilli, C.L. Carilli, C.L. Carilli, C.L. Carilli, C.S. Kochanek, C.S. Kochanek, D. Alloin, D. Alloin, D. Alloin, D. Downes, D. Downes, D. Downes, D. Downes, D. Turnshek, D.B. Haarsma, D.B. Sanders, D.B. Sanders, D.B. Sanders, D.H. Hughes, D.H. Hughes, D.J. Fixsen, D.J. Wilner, D.L. Jauncey, D.L. Jauncey, D.T. Frayer, D.T. Frayer, D.T. Frayer, D.W. Hogg, E. Bertin, E. Egami, E.S. Perlman, F. Combes, F. Combes, F. Combes, F. Combes, F. Courbin, G. Lagache, G. Thuma, G.F. Lewis, G.F. Lewis, G.F. Lewis, G.L. Granato, G.L. Granato, H.A. Thronson, I. Smail, I. Smail, I. Smail, I. Smail, I.A.W. Browne, I.F. Mirabel, J. Lehár, J. Lehár, J. Pelt, J. Pelt, J. Pelt, J. Tonry, J.-L. Puget, J.-P. Kneib, J.-P. Kneib, J.A. Högbom, J.E.J. Lovell, J.E.J. Lovell, J.J. Swift, J.M. Mazzarella, J.N. Hewitt, K. Ohta, K.M. Menten, K.M. Menten, L.B. Lucy, L.L.R. Williams, L.V.E. Koopmans, L.V.E. Koopmans, M. Gerin, M. Lerner, M. Polletta, M. Rowan-Robinson, M. Ryle, M. Tsuboi, M.J. Irwin, M.S. Yun, N. Metropolis, N.Z. Scoville, N.Z. Scoville, N.Z. Scoville, P. Andreani, P. Cox, P. Magain, P. Papadopoulos, P. Schneider, P.M. Solomon, P.M. Solomon, P.M. Solomon, P.P. Papadopoulos, P.R. Bevington, R. Barkana, R. Barvainis, R. Barvainis, R. Barvainis, R. Barvainis, R. Gispert, R. Kayser, R. Siebenmorgen, R. Subrahmanyan, R.A. Edelson, R.A. Ibata, R.A. Windhorst, R.H. Hildebrand, R.J. Ivison, R.J. Ivison, R.J. Ivison, R.L. Brown, S. Eales, S. Eales, S. Guilloteau, S. Guilloteau, S. Nair, S. Wallington, S.E. Scott, S.G. Djorgovski, S.J.E. Radford, S.L. Ellison, T. Ommen van, T. Wiklind, T. Wiklind, T. Wiklind, T. Wiklind, T. Wiklind, T. Wiklind, T. Wiklind, T. Wiklind, T. Wiklind, T. Yamada, T.G. Phillips, T.J. Broadhurst, T.R. Lauer, T.T. Takeuchi, W. Xu, W.H. Press   +155 more
core   +4 more sources

A dearth of dark matter in strong gravitational lenses [PDF]

Monthly Notices of the Royal Astronomical Society, 2013
I show that the lensing masses of the SLACS sample of strong gravitational lenses are consistent with the stellar masses determined from population synthesis models using the Salpeter IMF. This is true in the context of both General Relativity and modified Newtonian dynamics, and is in agreement with the expectation of MOND that there should be little ...
arxiv   +5 more sources

Image simulations for strong and weak gravitational lensing [PDF]

arXiv, 2020
Gravitational lensing has been identified as a powerful tool to address fundamental problems in astrophysics at different scales, ranging from exoplanet identification to dark energy and dark matter characterization in cosmology. Image simulations have played a fundamental role in the realization of the full potential of gravitational lensing by ...
arxiv   +5 more sources

Strong gravitational lensing by Schwarzschild black holes

Astrophysics, 2008
13 pages, 3 ...
Г. С. Бисноватый-Коган, Oleg Yu. Tsupko   +1 more
openalex   +6 more sources

Strong gravitational lensing by a charged Kiselev black hole [PDF]

European Physical Journal C: Particles and Fields, 2017
We study the gravitational lensing scenario where the lens is a spherically symmetric charged black hole (BH) surrounded by quintessence matter. The null geodesic equations in the curved background of the black hole are derived.
Mustapha Azreg-Aïnou, Sebastian Bahamonde, Mubasher Jamil   +2 more
doaj   +8 more sources