[en] The authors have shown that their search for gravitational lensing from a survey of optically selected highly luminous quasars (HLQ) appears very promising. Observational features (multiple images, image elongation, jet-like feature, fuzz, etc.) possibly associated with the HLQ phenomenon have been detected for more than 20% of the objects under study. While it is not yet known how many of the HLQs are gravitational mirages, at least 5 (out of 111) of the investigated quasars appear to be highly luminous because of amplification of their brightness by gravitational lensing.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Surdej, Jean ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Swings, Jean-Pierre ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Magain, Pierre ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image
Borgeest, U.
Kayser, R.
Refsdal, S.
Courvoisier, T. J.-L.
Kellermann, K. I.
Kuhr, H.
Language :
English
Title :
Search for Gravitational Lensing from a Survey of Highly Luminous Quasars
Publication date :
1988
Event name :
Optical Surveys for Quasars, ASP Conference Series
Event place :
Tucson, United States
Event date :
1988
By request :
Yes
Audience :
International
Main work title :
ASP Conference Series, Volume 2, Proceedings of a Workshop on Optical Surveys for Quasars
Editor :
Osmer, Patrick
Phillips, M. M.
Publisher :
Astronomical Society of the Pacific, Provo-Utah, United States
