| 释义 |
superˈnova Astr.
Pl. -novae, -novas.
[super- 6 c.]
1. A star that undergoes a sudden and temporary increase in brightness like a nova but to a very much greater degree, as a result of an explosion that disperses most of the stellar material.
1934Baade & Zwicky in Physical Rev. XLV. 138/1 Supernovae flare up in every stellar system (nebula) once in several centuries. 1934― in Proc. Nat. Acad. Sci. 15 May 254 The extensive investigations of extra-galactic systems..brought to light the..fact that there exist two well-defined types of..novae which might be distinguished as common novae and super-novae. 1939[see nova 2]. 1965Listener 20 May 741/1 Only three supernovae, the stars of 1054, 1572, and 1604, have appeared in our Galaxy since records began. 1976Sci. Amer. Dec. 89/1 Some supernovas may leave behind cosmic ashes in the form of a neutron star or black hole. 1977Whitaker's Almanack 1978 155/1 One important source of radio noise is the Crab Nebula, which is known to be the remains of the supernova of a.d. 1054. 1978Pasachoff & Kutner University Astron. xi. 296 On the average, Type I supernovae reach an absolute magnitude of -19 at peak brightness, while that of Type II supernovae is about 2 magnitudes fainter.
2. fig.
1965Listener 14 Jan. 84/3 Look at the soft gleam of D major near the start of the development (bar 170)—the distant glow of fiery supernova, into the heart of which we are at length to be flung. 1974State (Columbia, S. Carolina) 1 Apr. 10a/1 As far as the networks were concerned, the satiric supernova had burned out. 1979Tucson (Arizona) Citizen 20 Sept. 7b/6 (heading) ‘Buck Rogers’ no supernova, but it won't wink out, either.
3. attrib., as supernova explosion, supernova remnant.
1960McGraw-Hill Encycl. Sci. & Technol. XIII. 303/2 The remains of an old supernova explosion. 1975Sci. Amer. Mar. 29/2 The Crab Nebula is the remnant of a supernova explosion.
1960McGraw-Hill Encycl. Sci. & Technol. XIII. 304/1 Unexplained radio sources also may be from supernova remnants. 1978Pasachoff & Kutner University Astron. xi. 296 Optical astronomers have photographed two dozen of these stellar shreds, which are known as supernova remnants. |