SDSS J1206+4332 - Gravitational lens (Jan Sjoerd de Vries)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn)

SDSS J1206+4332 - Gravitational lens

The gravitational lens SDSS J1206+4332 (blue double ‘star’ in the centre) is a doubly imaged quasar at a distance of 10 billion lightyears (z=1.789). The light was emitted by the quasar when the universe was only 3.7 billion years old. It would take another 5.5 billion years before the solar system would come into existence. The lensing galaxy in between the two images of the quasar at a distance of 6.6 billion lightyears (z=0.745) is indistinguishable in this image. The light from the northern component took 112 days longer to arrive at the telescope than the southern component. The apparent separation between the two components is 3.03”. The time delay is being used to obtain an independent measurement of the Hubble constant.

References:

https://arxiv.org/pdf/1809.01274.pdf

https://shsuyu.github.io/H0LiCOW/site/paperIX.html

https://www.ast.cam.ac.uk/ioa/research/lensedquasars/indiv/SDSSJ1206+4332.html

http://www.astro.ucla.edu/~wright/CosmoCalc.html

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Astrometry.net job	2928123
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SDSS J1206+4332 - Gravitational lens

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