Article (Scientific journals)
Further observational evidence that MG J0414+0534 is a gravitational mirage
Angonin-Willaime, M.-C.; Vanderriest, C.; Hammer, F. et al.
1994In Astronomy and Astrophysics, 281, p. 388-394
Peer Reviewed verified by ORBi
 

Files


Full Text
Angonin_1994_AA281_388.pdf
Publisher postprint (2.51 MB)
Download

The authors thank EDP Sciences for their deposit authorization.


All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
GRAVITATIONAL EFFECTS; GRAVITATIONAL LENSES; RADIO EMISSION; RADIO SOURCES (ASTRONOMY); ASTRONOMICAL PHOTOGRAPHY; ASTRONOMICAL PHOTOMETRY; ASTRONOMICAL SPECTROSCOPY; RED SHIFT; SPECTROGRAPHS; SPECTROSCOPIC TELESCOPES
Abstract :
[en] Deep imaging of MG J0414+0534 with R and I filters reveals a faint, fuzzy and red object at the exact location expected for a lensing galaxy in the gravitational mirage hypothesis. Furthermore, the (extremely red and almost featureless) spectra of the 2 brightest components are very similar. These are strong indications that the system results from multiple gravitational imaging of a single source, but the nature of this source is not yet clear. It could be the nucleus of a low metallicity galaxy at a high redshift or a new type of object. Significant differences are observed between the flux ratios of the images at radio and optical wavelenghts. The most likely explanation for this effect is a differential amplification of the image pair A[SUB]1[/SUB]-A[SUB]2[/SUB] because of the large magnification gradient near a caustic.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Angonin-Willaime, M.-C.;  DAEC, Meudon Cedex, France
Vanderriest, C.;  DAEC, Meudon Cedex, France
Hammer, F.;  DAEC, Meudon Cedex, France
Magain, Pierre  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image
Language :
English
Title :
Further observational evidence that MG J0414+0534 is a gravitational mirage
Publication date :
01 January 1994
Journal title :
Astronomy and Astrophysics
ISSN :
0004-6361
eISSN :
1432-0746
Publisher :
EDP Sciences, Les Ulis, France
Volume :
281
Pages :
388-394
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 01 February 2010

Statistics


Number of views
25 (1 by ULiège)
Number of downloads
30 (0 by ULiège)

Bibliography


Similar publications



Contact ORBi