Reference : A search for gravitational lensing among highly luminous quasars - Observational stra...
Scientific congresses and symposiums : Paper published in a book
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/25388
A search for gravitational lensing among highly luminous quasars - Observational strategy and survey
English
Swings, Jean-Pierre [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
Magain, Pierre mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image >]
Remy, M. [ > > ]
Surdej, Jean mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Smette, A. [European Southern Observatory, Garching, Federal Republic of Germany]
Hutsemekers, Damien mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
van Drom, E. [> > > >]
1990
Gravitational Lensing
Soucail, G.
Mellier, Y.
Fort, B.
Springer-Verlag
Lecture Notes in Physics 360
360
83-87
No
Yes
International
3-540-52648-X
Berlin Heildelberg
Germany
"Gravitational lensing"
Sept. 13-15, 1989
Y. Mellier, B. Fort, G. Soucail (eds.)
Toulouse
France
[en] LUMINOSITY ; QUASARS ; SKY SURVEYS (ASTRONOMY) ; EXTRAGALACTIC RADIO SOURCES ; MAGNIFICATION ; OPTICAL ILLUSION ; GRAVITATIONAL LENSES
[en] The observational techniques employed to search for gravitational lensing effects in highly luminous quasars (HLQs) are given, along with results of the observations. The program, begun in 1986, considers the visible and dark matter distributions at different scales in the universe to determine which extragalactic objects are gravitationally lensed. The Hubble parameter and galaxy masses are determined from the observations, and observations of microlensing effects provide data on HLQ size and structures. The redshifts are found to be between 1 and 3.6, with apparent visual magnitudes 16-18.5 and absolute visual magnitudes between -29 and -30.6. About one quarter of the images exhibit either multiple components, elongated structures, jetlike features, or faint nearby galaxies. The double quasar UM 673 and its 'overlying' lens galaxy is given as a prime example of an HLQ that is gravitationally lensed. It is theorized many more HLQs are gravitationally lensed, and specific future observations are recommended.
Researchers ; Professionals
http://hdl.handle.net/2268/25388
http://esoads.eso.org/abs/1990LNP...360...83S
Original publication: "Lecture notes in physics: Gravitational lensing"; Proceedings of the Workshop, Toulouse, France, Sept. 13-15, 1989 (A91-39303 16-90). Y. Mellier, B. Fort, G. Soucail (eds.)

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