quasarn.

Brit.

/ˈkweɪzɑː/, U.S.

/ˈkweɪˌzɑr/

Origin: Formed within English, by clipping or shortening. Etymon: quasi-stellar adj.

Etymology: Shortened < quasi-stellar adj. (see quot. 1964²); compare -ar suffix⁴. Compare French quasar (1965; < English). The object was so called because the earliest telescopic images showed objects resembling stars.

Astronomy.

A celestial object of very small angular size that has a very large redshift, and is believed to be an extremely distant and immensely powerful source of light and other radiation.The major source of a quasar's energy is commonly thought to be a supermassive black hole. Some quasars appear to be located at the centres of galaxies and it is believed that they may represent an early phase in galaxy evolution.

ΘΚΠ

the world > the universe > star > kind of star > quasar > [noun]

QSO1964

quasar1964

1964 N.Y. Times 29 Apr. 15 Early star photographs from the archives of Heidelberg University have confirmed that one of the most distant and awesome objects in the universe pulsates in a regular, 13-year cycle. The behavior of this recently discovered object, now called a ‘quasar’, is one of the chief puzzles in modern science.

1964 H.-Y. Chiu in Physics Today May 21/2 So far, the clumsily long name ‘quasi-stellar radio sources’ is used to describe these objects... For convenience, the abbreviated form ‘quasar’ will be used throughout this paper.

1978 Daily Tel. 8 June 2/5 The nearest known quasar in space, an object the size of the solar system but emitting the energy of 100 galaxies, has been discovered by an X-ray experiment aboard an American satellite.

1989 J. Silk Big Bang (rev. ed.) xii. 260 (caption) The photons that produced the spectrum of the quasar PHL 957 were emitted when the universe was only about 20 percent of its present age.

1997 J. Updike Toward End of Time 247 From the quasars to the rainbow shimmer on my dragonfly wings, everything was an extravagance engraved upon the obsidian surface of an infrangible eternal darkness.

1999 T. Pratchett et al. Sci. of Discworld x. 81 Some distant quasars produce multiple images in telescopes because their light is lensed by an intervening galaxy.

Derivatives

ˈquasarlike adj.

ΚΠ

1965 Sky & Telescope Aug. 71/1 The implication was clear: the brighter high-latitude blue objects were stars, the fainter ones quasarlike.

1974 J. Blish Star Trek 10 53 The USS Enterprise operated under a standing order to investigate all quasar and quasarlike phenomena wherever.

1997 R. Wilson Astron. through Ages xii. 236 Somewhat similar to quasars are the Seyfert galaxies, which were discovered in the 1940s... Subsequent studies revealed some quasar-like properties such as very high internal velocities.

This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022).

单词	quasar
释义	quasarn. Brit. /ˈkweɪzɑː/, U.S. /ˈkweɪˌzɑr/ Origin: Formed within English, by clipping or shortening. Etymon: quasi-stellar adj. Etymology: Shortened < quasi-stellar adj. (see quot. 1964²); compare -ar suffix⁴. Compare French quasar (1965; < English). The object was so called because the earliest telescopic images showed objects resembling stars. Astronomy. A celestial object of very small angular size that has a very large redshift, and is believed to be an extremely distant and immensely powerful source of light and other radiation.The major source of a quasar's energy is commonly thought to be a supermassive black hole. Some quasars appear to be located at the centres of galaxies and it is believed that they may represent an early phase in galaxy evolution. ΘΚΠ the world > the universe > star > kind of star > quasar > [noun] QSO1964 quasar1964 1964 N.Y. Times 29 Apr. 15 Early star photographs from the archives of Heidelberg University have confirmed that one of the most distant and awesome objects in the universe pulsates in a regular, 13-year cycle. The behavior of this recently discovered object, now called a ‘quasar’, is one of the chief puzzles in modern science. 1964 H.-Y. Chiu in Physics Today May 21/2 So far, the clumsily long name ‘quasi-stellar radio sources’ is used to describe these objects... For convenience, the abbreviated form ‘quasar’ will be used throughout this paper. 1978 Daily Tel. 8 June 2/5 The nearest known quasar in space, an object the size of the solar system but emitting the energy of 100 galaxies, has been discovered by an X-ray experiment aboard an American satellite. 1989 J. Silk Big Bang (rev. ed.) xii. 260 (caption) The photons that produced the spectrum of the quasar PHL 957 were emitted when the universe was only about 20 percent of its present age. 1997 J. Updike Toward End of Time 247 From the quasars to the rainbow shimmer on my dragonfly wings, everything was an extravagance engraved upon the obsidian surface of an infrangible eternal darkness. 1999 T. Pratchett et al. Sci. of Discworld x. 81 Some distant quasars produce multiple images in telescopes because their light is lensed by an intervening galaxy. Derivatives ˈquasarlike adj. ΚΠ 1965 Sky & Telescope Aug. 71/1 The implication was clear: the brighter high-latitude blue objects were stars, the fainter ones quasarlike. 1974 J. Blish Star Trek 10 53 The USS Enterprise operated under a standing order to investigate all quasar and quasarlike phenomena wherever. 1997 R. Wilson Astron. through Ages xii. 236 Somewhat similar to quasars are the Seyfert galaxies, which were discovered in the 1940s... Subsequent studies revealed some quasar-like properties such as very high internal velocities. This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022). < n.1964
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