3C48 is a quasar discovered in 1960; it was the second source conclusively identified as such.[3]
3C48 was the first source in the Third Cambridge Catalogue of Radio Sources for which an optical identification was found by Allan Sandage and Thomas A. Matthews in 1960 through interferometry.[4]
In 1963 Jesse L. Greenstein and Thomas Matthews found that it had a redshift of 0.367, making it one of the highest redshift sources then known.[5]
It was not until 1982 that the surrounding faint galactic "nebulosity" was confirmed to have the same redshift as 3C48, cementing its identification as an object in a distant galaxy.[6] This was also the first solid identification of a quasar with a surrounding galaxy at the same redshift.
3C 48 is one of four primary calibrators used by the Very Large Array (along with 3C 138 and 3C 147, and 3C 286). Visibilities of all other sources are calibrated using observed visibilities of one of these four calibrators.[7]
^ abcdef"NASA/IPAC Extragalactic Database". Results for 3C 48. Retrieved 2006-10-26.
^"3C 48". SIMBAD. Centre de données astronomiques de Strasbourg.
^Weaver, Kenneth F. (May 1974). "The Incredible Universe". National Geographic. 145 (5): 589–633.
^Matthews, Thomas A.; Sandage, Allan R. (1963). "Optical Identification of 3c 48, 3c 196, and 3c 286 with Stellar Objects". The Astrophysical Journal. 138: 30–56. Bibcode:1963ApJ...138...30M. doi:10.1086/147615.
^Greenstein, J. L.; Matthews, Thomas A. (1963). "Red-Shift of the Unusual Radio Source 3C48". Nature. 197 (4872): 1041–1042. Bibcode:1963Natur.197.1041G. doi:10.1038/1971041a0. S2CID 4193798.
^Todd A. Boroson & Oke, J. B. (1982). "Detection of the underlying galaxy in the QSO 3C48". Nature. 296 (5856): 397–399. Bibcode:1982Natur.296..397B. doi:10.1038/296397a0. S2CID 4284238.
^Witz, Stephan W. (4 December 2015). "Calibration and Flux Density Scale". National Radio Astronomy Observatory. Retrieved 15 May 2016.
at the same redshift. 3C48 is one of four primary calibrators used by the Very Large Array (along with 3C 138 and 3C 147, and 3C 286). Visibilities of...
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...
unknown nature, and this became shortened to "quasar". The first quasars (3C48 and 3C 273) were discovered in the late 1950s, as radio sources in all-sky radio...
Jesse L; Matthews, Thomas A (1963). "Red-Shift of the Unusual Radio Source: 3C48". Nature. 197 (4872): 1041. Bibcode:1963Natur.197.1041G. doi:10.1038/1971041a0...
Messier 33—a member of the Local Group. The first quasar ever observed, 3C48, also lies within the boundaries of Triangulum. In the Babylonian star catalogues...
parallel to the jet axis. 3C 286 is one of four primary calibrators used by the Very Large Array (along with 3C48, 3C 138, and 3C 147). Visibilities of all...
motion) of 1.2 ± 0.4 c. 3C 147 is one of four primary calibrators used by the Very Large Array (along with 3C48, 3C 138, and 3C 286). Visibilities of all...
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system OC-3 is also known as STS-3 (electrical level) and STM-1 (SDH). OC-3c (c stands for "concatenated") concatenates three STS-1 (OC-1) frames into...
Thomas A.; Sandage, Allan R. (July 1963). "Optical Identification of 3c48, 3c 196, and 3c 286 with Stellar Objects". The Astrophysical Journal. 138: 30. Bibcode:1963ApJ...
– R4×32 4C set – John Drewry 1971 Bratach Bana – J8x32 3C/4 – John Drewry 1964 Clutha – R4×48 Square set – unknown 1890 Canadian Barn Dance - Dashing...
not appear to have an optical counterpart. In 1960 one of these sources, 3C48, was found to be associated with what appeared to be a small blue star....
charged black hole. 1960 – Thomas Matthews and Allan R. Sandage associate 3C48 with a point-like optical image, show radio source can be at most 15 light...
Hazard at the Jodrell Bank Observatory. Two radio sources were involved 3C48 and 3C 273 Measurements taken by Cyril Hazard and John Bolton during one of...
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(MMCs). SDs have become an industry standard. The three companies formed SD-3C, LLC, a company that licenses and enforces intellectual property (IP) rights...
March 3C (simplified Chinese: 长征三号丙火箭; traditional Chinese: 長征三號丙火箭; pinyin: Chángzhēng Sānhào Bǐng Huǒjiàn), also known as the Changzheng 3C, CZ-3C and...