Results 11 to 20 of about 63,611 (230)

A Systematic Review of Strong Gravitational Lens Modeling Software

New Astronomy Reviews, 2013
Despite expanding research activity in gravitational lens modeling, there is no particular software which is considered a standard. Much of the gravitational lens modeling software is written by individual investigators for their own use.
Aazami, Alan T. Lefor, Alard, Allam, Berciano Alba, Bertin, Boughen, Brewer, Brewer, Coe, Coe, Cohn, Jullo, Jullo, Kneib, Knudson, Liesenborgs, Liesenborgs, Liesenborgs, Liesenborgs, Limousin, Lin, Mohammad Akhlaghi, Newbury, Oguri, Oguri, Peng, Richard, Richard, Saha, Saha, Saha, Smith, Suyu, Toshifumi Futamase, Wallington, Warren, Wayth, Wayth, Williams   +39 more
core   +3 more sources

Fixed points of mapping of N-point gravitational lenses

Odessa Astronomical Publications, 2018
In this paper, we study fixed points of N-point gravitational lenses. We use complex form of lens mapping to study fixed points. Complex form has an advantage over coordinate one because we can describe N-point gravitational lens by system of two equation ...
A. T. Kotvytskiy, V. Yu. Shablenko, E. S. Bronza   +2 more
doaj   +1 more source

Using gravitational lenses to detect gravitational waves [PDF]

, 1990
Gravitational lenses could be used to detect gravitational waves, because a gravitational wave affects the travel-time of a light ray. In a gravitational lens, this effect produces time-delays between the different images.
Allen, B.
core   +2 more sources

Studies of relativistic effects with radioastron space mission [PDF]

Serbian Astronomical Journal, 2007
In the review we discuss possible studies of GR phenomena such as gravitational microlensing and shadow analysis with the forthcoming RadioAstron space mission.
Zakharov A.F.
doaj   +1 more source

The final candidate from the JVAS/CLASS search for 6 arcsec to 15 arcsec image separation lensing [PDF]

, 2010
A search for 6 arcsec to 15 arcsec image separation lensing in the Jodrell Bank-Very Large Array Astrometric Survey (JVAS) and the Cosmic Lens All-Sky Survey (CLASS) by Phillips et al.
Barvainis, Berciano Alba, Biggs, Biggs, Bradač, Browne, Browne, Chae, Cohn, Condon, Dalal, Fassnacht, Fassnacht, Fedeli, Garrett, Gregory, Impellizzeri, Inada, Inada, Inada, J. P. McKean, Jackson, Kochanek, Kochanek, Koopmans, Koopmans, Landolt, Limousin, McKean, McKean, McKean, McKean, McKean, More, Myers, Navarro, Oke, Patnaik, Phillips, Sand, Suyu, Suyu, Walsh, Wilkinson, Wucknitz, York   +45 more
core   +2 more sources

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

High Resolution Gravitational Lens Model

Open Astronomy, 2015
A new model of gravitational lens – high-resolution gravitational lens based on the metric of gravitational field produced by N moving and rotating finite-sized bodies – is proposed. The model is applied to the case of a double galaxy gravitational lens.
Chechin L. M.
doaj   +1 more source

The cosmological lens equation and the equivalent single-plane gravitational lens [PDF]

, 1997
The gravitational lens equation resulting from a single (non-linear) mass concentration (the main lens) plus inhomogeneities of the large-scale structure is shown to be strictly equivalent to the single-plane gravitational lens equation without the ...
Schneider, Peter
core   +3 more sources

Theory of gravitational lensing on a curved cosmic string

European Physical Journal C: Particles and Fields, 2023
It is discussed in detail the complete mathematical model of gravitational lensing on a single cosmic string (CS) of general shape and position with respect to the line of sight.
Igor I. Bulygin, Mikhail V. Sazhin, Olga S. Sazhina   +2 more
doaj   +1 more source

Search for gravitational lens candidates in the XMM-LSS/CFHTLS common field [PDF]

, 2013
Our aim was to identify gravitational lens candidates among some 5500 optical counterparts of the X-ray point-like sources in the medium-deep ~11 sq. deg. XMM-LSS survey.
Chiappetti, L., Elyiv, A., Finet, F., Melnyk, O., Pierre, M., Pospieszalska-Surdej, A., Sadibekova, T., Surdej, J.   +7 more
core   +2 more sources