Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-07-18
Astron.Astrophys.406:L43-L46,2003
Astronomy and Astrophysics
Astrophysics
4 pages, 3 figures, published in A&A
Scientific paper
10.1051/0004-6361:20030904
We report the discovery of a new quadruply imaged quasar surrounded by an optical Einstein ring candidate. Spectra of the different components of 1RXS J113155.4-123155 reveal a source at z=0.658. Up to now, this object is the closest known gravitationally lensed quasar. The lensing galaxy is clearly detected. Its redshift is measured to be z=0.295. Additionally, the total V magnitude of the system has varied by 0.3 mag between two epochs separated by 33 weeks. The measured relative astrometry of the lensed images is best fitted with an SIS model plus shear. This modeling suggests very high magnification of the source (up to 50 for the total magnification) and predicts flux ratios between the lensed images significantly different from what is actually observed. This suggests that the lensed images may be affected by a combination of micro or milli-lensing and dust extinction effects.
Billeres Malvina
Claeskens Jean-Francois
Courbin Fred
Hutsemékers Damien
Jean C.
No associations
LandOfFree
A quadruply imaged quasar with an optical Einstein ring candidate: 1RXS J113155.4-123155 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A quadruply imaged quasar with an optical Einstein ring candidate: 1RXS J113155.4-123155, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A quadruply imaged quasar with an optical Einstein ring candidate: 1RXS J113155.4-123155 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-489105