Quadruple Quasar in Leo Minor

Jul 20, 2014

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Quadruple Quasar in Leo Minor. (distance = c * look-back time ). SDSS J1004+4112, a Quadruply -Imaged QSO Discovered in 2003 (SDSS) by Inada et al. (including Gordon Richards) Spectroscopy at Keck I measures z=1.73 Lensed by galaxy cluster at z=0.68

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Quadruple Quasar in Leo Minor

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Quadruple Quasar in Leo Minor

(distance = c * look-back time )
SDSS J1004+4112, a Quadruply-Imaged QSO • Discovered in 2003 (SDSS) by Inada et al. (including Gordon Richards) • Spectroscopy at Keck I measures z=1.73 • Lensed by galaxy cluster at z=0.68 • Note that A is about 1 magnitude brighter than C

90-minute Hyperion image centered on the quadruple quasar (50 x 50 arcmin) The brightest star is TW LMi, mag ~7.4
Hyperion image detail C is now brighter than A!