Results 1 to 10 of about 788,707 (322)

The strong gravitational lens finding challenge [PDF]

open access: yesAstronomy & Astrophysics, 2019
Large-scale imaging surveys will increase the number of galaxy-scale strong lensing candidates by maybe three orders of magnitudes beyond the number known today. Finding these rare objects will require picking them out of at least tens of millions of images, and deriving scientific results from them will require quantifying the efficiency and bias of ...
Marc Huertas-Company   +39 more
openaire   +10 more sources

THE OPTIMAL GRAVITATIONAL LENS TELESCOPE [PDF]

open access: yesThe Astronomical Journal, 2010
Given an observed gravitational lens mirage produced by a foreground deflector (cf. galaxy, quasar, cluster,...), it is possible via numerical lens inversion to retrieve the real source image, taking full advantage of the magnifying power of the cosmic lens. This has been achieved in the past for several remarkable gravitational lens systems.
Dimitri Mawet   +11 more
openaire   +10 more sources

The Gravitational Lens CFRS 03.1077 [PDF]

open access: yesThe Astrophysical Journal, 2002
11 pages, 5 figures, accepted by Ap ...
O. Le Fevre   +8 more
openaire   +5 more sources

DETERMINE THE EFFECTIVE PARAMETERS IN GRAVITATIONAL LENSES AND STUDY THE ALTERNATIVE EFFECTS BETWEEN THEM [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2012
The importance of the gravitational lens in cosmology and astronomy, and a brief historical review for the evolution of the gravitational lenses have been introduced.
S. A.AL-SABAAWE, M. A.AL-OBAYDE
doaj   +1 more source

Gravitational Lensing of Continuous Gravitational Waves

open access: yesUniverse, 2021
Continuous gravitational waves are analogous to monochromatic light and could therefore be used to detect wave effects such as interference or diffraction. This would be possible with strongly lensed gravitational waves.
Marek Biesiada, Sreekanth Harikumar
doaj   +1 more source

Gravitational Lensing of Supernova Neutrino Bursts

open access: yesUniverse, 2021
Supernova neutrino bursts have been observed from extragalactic distances. This note addresses the question of how gravitational lensing could distort the information in the burst.
John M. LoSecco
doaj   +1 more source

Gravitational lens time delays and gravitational waves [PDF]

open access: yesPhysical Review D, 1994
Using Fermat's principle, we analyze the effects of very long wavelength gravitational waves upon the images of a gravitationally lensed quasar. We show that the lens equation in the presence of gravity waves is equivalent to that of a lens with different alignment between source, deflector, and observer in the absence of gravity waves.
Diego D. Harari   +3 more
openaire   +4 more sources

The 2dF Gravitational Lens Survey [PDF]

open access: yesPublications of the Astronomical Society of Australia, 2001
AbstractThe 2 degree Field (2dF) galaxy redshift survey will involve obtaining spectra of approximately 2.5 105 objects which have previously been identified as galaxy candidates on morphological grounds. Included in these spectra should be about ten gravitationally-lensed quasars, all with low-redshift galaxies as deflectors (as the more common lenses
Mortlock, DJ, Madgwick, DS, Lahav, O
openaire   +5 more sources

Gravitational lens surveys with LOFAR [PDF]

open access: yesProceedings of From Planets to Dark Energy: the Modern Radio Universe — PoS(MRU), 2008
Poster presented at the conference "From planets to dark energy: The modern radio Universe" in Manchester, October 2007. Proceedings contribution and original poster also available from http://pos.sissa.it/cgi-bin/reader/contribution.cgi?id=PoS%28MRU ...
M. A. Garrett, Olaf Wucknitz
openaire   +3 more sources

Fixed Points Features in N-Point Gravitational Lenses

open access: yesEast European Journal of Physics, 2019
A set of fixed points in N-point gravitational lenses is studied in the paper. We use complex form of lens mapping to study fixed points. There are some merits of using a complex form over coordinate. In coordinate form gravitational lens is described by
Volodymyr Shablenko
doaj   +1 more source

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