| 释义 |
plerion, n. Astron.|ˈplɛrɪɒn|
[Irreg. f. Gr. πλήρ-ης full + -ιον neut. noun ending.]
A supernova remnant of a relatively short-lived type, characterized by a flat radio spectrum and by radio emission which is not confined to an outer shell but originates in all parts of the remnant's volume.
1978K. W. Weiler in Memorie Societa Astronomica Italiana XLIX. 546 Because it is cumbersome and somewhat of a misnomer to refer to this class of supernova remnants as Crab-like or filled-center, we would like to suggest the new name of plerion to identify the group. 1979Astron. & Astrophysics LXXV. 310/1 The close similarity of these properties to those of plerions (i.e. Crab-like SNR's) suggest that GRS's and plerions represent different manifestations and/or products of one and the same physical phenomenon. 1984Astrophysical Jrnl. CCLXXXII. 161/1 A smaller number of SNRs are filled-center remnants, or Crab Nebula-like remnants after the best known member of the category (also called ‘plerions’ or ‘plethoric’ remnants). 1988Nature 31 Mar. 419/1 The properties of a ‘pulsar bubble’ or plerion have been investigated in the past by computing the evolution from the early phases until the formation of a fully developed Crab-like supernova remnant.
Hence pleriˈonic a., designating such a remnant.
1979D. Clark Superstars iv. 54 The number of these ‘plerionic’ remnants—so-called from the Greek word meaning ‘filled centre’—is difficult to estimate, since they tend to mimic ionized hydrogen regions in some of their properties. 1987Nature 3 Dec. 457/1 This is..about an order of magnitude less than that of Crab Nebula-like ‘plerionic’ remnants. |