Results 21 to 30 of about 95,116 (297)

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

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

PyAutoLens: Open-Source Strong Gravitational Lensing [PDF]

Journal of Open Source Software, 2021
1 Institute for Computational Cosmology, Stockton Rd, Durham DH1 3LE 2 Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China 3 National Astronomical Observatories ...
J. Nightingale, R. Hayes, Ashley J. Kelly, A. Amvrosiadis, A. Etherington, Q. He, Nan Li, Xiaoyue Cao, J. Frawley, S. Cole, A. Enia, C. Frenk, D. Harvey, Ran Li, R. Massey, M. Negrello, A. Robertson   +16 more
semanticscholar   +5 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

Gravitational lensing around Kehagias–Sfetsos compact objects surrounded by plasma

European Physical Journal C: Particles and Fields, 2019
We study the optical properties of the Kehagias–Sfetsos (KS) compact objects, characterized by the “Hořava” parameter $$\omega _{_{KS}}$$ ωKS , in the presence of plasma, considering its homogeneous or power-law density distribution.
Sudipta Hensh, Ahmadjon Abdujabbarov, Jan Schee, Zdeněk Stuchlík   +3 more
doaj   +3 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

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 as a Probe of Dark Matter [PDF]

Space Science Reviews, 2023
Dark matter structures within strong gravitational lens galaxies and along their lines of sight leave a gravitational imprint on the multiple images of lensed sources.
S. Vegetti, S. Birrer, G. Despali, C. Fassnacht, D. Gilman, Y. Hezaveh, L., Perreault Levasseur, J. McKean, D. Powell, C. M. O'Riordan, G., Vernardos   +12 more
semanticscholar   +1 more source

Strong gravitational lensing by loop quantum gravity motivated rotating black holes and EHT observations [PDF]

The European Physical Journal C, 2023
We investigate gravitational lensing in the strong deflection regime by loop quantum gravity (LQG)-motivated rotating black hole (LMRBH) metrics with an additional parameter l besides mass M and rotation a .
J. Kumar, Shafqat Ul Islam, Sushant G. Ghosh   +2 more
semanticscholar   +1 more source

Constraining a modified gravity theory in strong gravitational lensing and black hole shadow observations [PDF]

Physical Review D, 2022
We study the strong gravitational lensing effect around rotating black holes in different gravity theories. By calculating the deflection angle of strong gravitational lensing, we evaluate the lensing observables including the image position, separation ...
Xiao-Mei Kuang, Zi-Yu Tang, Bin Wang, Anzhong Wang   +3 more
semanticscholar   +1 more source