Results 11 to 20 of about 34,013 (306)

Strong Gravitational Lensing with SKA [PDF]

New Astronomy Reviews, 2004
The advent of new observational facilities in the last two decades has allowed the rapid discovery and high-resolution optical imaging of many strong lens systems from galaxy to cluster scales, as well as their spectroscopic follow-up.
Browne, I.W.A. Browne, L.V.E. Koopmans, Myers, N.J. Jackson, Schneider   +5 more
core   +4 more sources

Strong Gravitational Lensing by Sgr A* [PDF]

Classical and Quantum Gravity, 2010
In recent years, there has been increasing recognition of the potential of the galactic center as a probe of general relativity in the strong field. There is almost certainly a black hole at Sgr A* in the galactic center, and this would allow us the ...
Amitai Y Bin-Nun, Bin-Nun A Y, Bozza V, Bozza V, Bozza V, Eiroa E F Sendra C M, Ghez A M, Gillessen S, Holz D E, Misner C W, Schneider P, Wambsganss J, Whisker R   +12 more
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

Strong gravitational lensing by wormholes [PDF]

Journal of Cosmology and Astroparticle Physics, 2019
We study strong gravitational lensing by a class of static wormhole geometries. Analytical approaches to the same are developed, and the results differ substantially from strong lensing by black holes, first reported by Bozza.
Banerjee, Pritam, Paul, Suvankar, Sarkar, Tapobrata, Shaikh, Rajibul   +3 more
core   +2 more sources

Strong Gravitational Lensing by Kiselev Black Hole [PDF]

Physical Review D, 2015
We investigate the gravitational lensing scenario due to Schwarzschild-like black hole surrounded by quintessence (Kiselev black hole). We work for the special case of Kiselev black hole where we take the state parameter $w_{q}=-\frac{2}{3}$.
Bahamonde, Sebastian, Hussain, Saqib, Jamil, Mubasher, Younas, Azka   +3 more
core   +6 more sources

Can Strong Gravitational Lensing Constrain Dark Energy? [PDF]

Physical Review D, 2007
We discuss the ratio of the angular diameter distances from the source to the lens, $D_{ds}$, and to the observer at present, $D_{s}$, for various dark energy models.
B. Ratra, J. Navarro, Kin-Wang Ng, L. F. Bloomfield Torres, M. Bartelmann, M. Fukugita, P. Kormann, P. Schneider, S. Sasaki, Seokcheon Lee, V. M. Dashevskii, Y. Zel’dovich   +11 more
core   +2 more sources

Simulations of Strong Gravitational Lensing with Substructure [PDF]

Monthly Notices of the Royal Astronomical Society, 2006
Galactic sized gravitational lenses are simulated by combining a cosmological N-body simulation and models for the baryonic component of the galaxy.
Amara, Adam, Cox, Thomas J., Metcalf, R. Benton, Ostriker, Jeremiah P.   +3 more
core   +4 more sources

Strong Gravitational Lensing and Dynamical Dark Energy [PDF]

Monthly Notices of the Royal Astronomical Society, 2004
We study the strong gravitational lensing properties of galaxy clusters obtained from N-body simulations with different kind of Dark Energy (DE). We consider both dynamical DE, due to a scalar field self--interacting through Ratra-Peebles (RP) or SUGRA ...
Maccio', Andrea V.
core   +5 more sources

Strong Gravitational Lensing and Its Cosmic Constraints [PDF]

Modern Physics Letters A, 2013
In this paper, we propose a new method to use the strong lensing data sets to constrain a cosmological model. By taking the ratio $\mathcal{D}^{obs}_{ij}=\theta_{\mathrm{E_{\mathrm{i}}}}\sigma_{\mathrm{0_{\mathrm{j}}}}^2/\theta_{\mathrm{E_{\mathrm{j ...
Wang, Nannan, Xu, Lixin
core   +2 more sources

Strong Gravitational Lensing and Microlensing of Supernovae. [PDF]

Space Sci Rev
AbstractStrong gravitational lensing and microlensing of supernovae (SNe) are emerging as a new probe of cosmology and astrophysics in recent years. We provide an overview of this nascent research field, starting with a summary of the first discoveries of strongly lensed SNe. We describe the use of the time delays between multiple SN images as a way to
Suyu SH, Goobar A, Collett T, More A, Vernardos G.   +4 more
europepmc   +5 more sources