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3C 273 is a quasar located at the center of a giant elliptical galaxy in the constellation of Virgo. It was the first quasar ever to be identified and is the visually brightest quasar in the sky as seen from Earth, with an apparent visual magnitude of 12.9. [2] The derived distance to this object is 749 megaparsecs (2.4 billion light-years).
astro: average luminosity of a quasar: 1.57 × 10 39 W astro: approximate luminosity of 3C273, the brightest quasar seen from Earth [82] 10 40: 5 × 10 40 W astro: approximate peak luminosity of the energetic fast blue optical transient CSS161010 [83] 10 41: 1 × 10 41 W
RX J1131-1231 is the name of the complex, quasar, host galaxy and lensing galaxy, together. The quasar's host galaxy is also lensed into a Chwolson ring about the lensing galaxy. The four images of the quasar are embedded in the ring image. Cloverleaf: 4 [3] Brightest known high-redshift source of CO emission [4] QSO B1359+154: 6
The first true quadruple quasar system was discovered in 2015 at a redshift z = 2.0412 and has an overall physical scale of about 200 kpc (roughly 650,000 light-years). [74] A multiple-image quasar is a quasar whose light undergoes gravitational lensing, resulting in double, triple
Each black circle and red cross on the upper image map is a quasar similar to this one. The Huge Large Quasar Group , ( Huge-LQG , also called U1.27 ) is a possible structure or pseudo-structure of 73 quasars , referred to as a large quasar group , that measures about 4 billion light-years across.
The object itself was detected in ESO images dating back to 1980, but its identification as a quasar occurred only several decades later. [2]An automated analysis of 2022 data from the European Space Agency's Gaia satellite did not confirm J0529-4351 as too bright to be a quasar, and suggested it was a 16th magnitude star with a 99.98% probability.
3C 286, also known by its position as 1328+307 (B1950 coordinates) or 1331+305 (J2000 coordinates), is a quasar [3] at redshift 0.8493 with a radial velocity of 164,137 km/s. [4] It is part of the Third Cambridge Catalogue of Radio Sources (3C Survey). The 3C Survey was conducted at the relatively low radio frequencies of 159 and 178 MHz.
3C 345 has been known to fluctuate in brightness. For example, it brightened from magnitude 17.2 to 16.0 between 10 April 2018 and 8 May 2018 when observed in R band. [7] A bright GeV gamma-ray flare was observed by the Fermi Gamma-ray Space Telescope on 31 May 2017, as the flux increased by 40 times above average. [8]