Abstract
view Abstract Citations (11) References (14) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Lunar occultation observations of the Crab Nebula. Maloney, F. P. ; Gottesman, S. T. Abstract Three lunar occultations of the Crab Nebula were observed; two at 114 MHz and one at 26.3 MHz, during the 1974 series of events. At the higher frequency, four strip-integrated brightness profiles were Fourier inverted to synthesize a two-dimensional map of the Nebula to an effective resolution of 30 arc sec. At 114 MHz, the Nebula is composed of a broad envelope of emission which contains several smaller sources. The presence of this small-scale structure is probably due to the ionized elements in the filaments. The 26.3 MHz observations indicate the presence of a bright, localized source containing greater than 80% of the flux of the Nebula. The position of this source is confined by the data to a narrow strip centered at the pulsar NP 0532. Publication: The Astrophysical Journal Pub Date: December 1979 DOI: 10.1086/157519 Bibcode: 1979ApJ...234..485M Keywords: Crab Nebula; Lunar Occultation; Pulsars; Radio Sources (Astronomy); Brightness; Radio Telescopes; Spectral Resolution; Astrophysics; Crab Nebula:Lunar Occultations; Crab Nebula:Radio Maps; Crab Nebula:Structure full text sources ADS |
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