SDSS J094604.90+183541.8: A Gravitationally Lensed Quasar at z=4.8

Details SDSS J094604.90+183541.8: A Gravitationally Lensed Quasar at z=4.8 SDSS J094604.90+183541.8: A Gravitationally Lensed Quasar at z=4.8

2010-02-19

arxiv.org/abs/1002.3832v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

AJ accepted, 9 pages, 6 figures, referee suggestions included

Scientific paper

We report the discovery of a gravitationally lensed quasar identified serendipitously in the Sloan Digital Sky Survey (SDSS). The object, SDSS J094604.90+183541.8, was initially targeted for spectroscopy as a luminous red galaxy, but the SDSS spectrum has the features of both a z=0.388 galaxy and a z=4.8 quasar. We have obtained additional imaging that resolves the system into two quasar images separated by 3.06 arcsec and a bright galaxy that is strongly blended with one of the quasar images. We confirm spectroscopically that the two quasar images represent a single lensed source at z=4.8 with a total magnification of 3.2, and we derive a model for the lensing galaxy. This is the highest redshift lensed quasar currently known. We examine the issues surrounding the selection of such an unusual object from existing data and briefly discuss implications for lensed quasar surveys.

Affiliated with

Also associated with

No associations

Rating

SDSS J094604.90+183541.8: A Gravitationally Lensed Quasar at z=4.8 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 SDSS J094604.90+183541.8: A Gravitationally Lensed Quasar at z=4.8, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and SDSS J094604.90+183541.8: A Gravitationally Lensed Quasar at z=4.8 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-692270