Letter | Published:

Observability of γ-ray pulsars

Naturevolume 274pages572574 (1978) | Download Citation



PULSARS seem to play a major role as γ-ray emitters. Of the 13 objects listed in the first COS B catalogue1 the two brightest, CG185-5 and CG263-2, have been identified with the Crab (PSR0531+21) and Vela (PSR0833–;45) pulsars respectively. This privileged role of pulsars as identified γ-ray sources could be simply related to observational reasons: in fact, because of the poor angular resolution intrinsic to the γ-ray telescopes, the only possibility of identification for individual sources is the time structure of the emission, and the periodical pattern of pulsars is particularly suited. On the other hand, for PSR0531+21 and PSR0833−45, the observed pulsed energy release is essentially in the γ-ray channel, with a ratio between the γ and radio luminosity as high as 106.

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    Present address: Max-Planck-Institut fur Extraterrestrische Physik, Garching bei Munchen, FRG


  1. Istituto di Fisica, Università di Palermo and Laboratorio di Fisica Cosmica e Tecnologie Relative del CNR Sezione di Palermo

  2. Istituto di Fisica, Università di Palermo, Unita di Ricerca GIFCO-CNR, Palermo, Italy

    • N. D'AMICO
    • , E. MASSARO
    •  & L. SCARSI
  3. Laboratorio di Fisica Cosmica e Technologie Relative del CNR Sezione di Palermo, Italy

    • N. D'AMICO
    • , E. MASSARO
    •  & L. SCARSI


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