Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981ap%26ss..78...45i&link_type=abstract
Astrophysics and Space Science, vol. 78, no. 1, Aug. 1981, p. 45-72.
Astronomy and Astrophysics
Astronomy
42
Pulsars, Radiant Flux Density, Radio Spectra, Stellar Spectra, Very High Frequencies, Data Acquisition, Radio Sources (Astronomy), Stellar Luminosity, Stellar Spectrophotometry
Scientific paper
Flux pulsar radioemission measurements at meter wavelengths are presented. Flux densities at 102, 85, 61, and 39 MHz are measured for, respectively, 85, 29, 37, and 23 pulsars. Some of them are made simultaneously at all frequencies. On the basis of these data and data on high frequencies obtained by others, spectra of 52 pulsars are plotted. In nearly all the pulsars, a turn-over frequency at which the flux density of pulsar radioemission attains its maximum is detected. Its mean value is 130 + or - 80 MHz. Averaged over many pulsars, it is found that the spectral index is negative in the 39-61 MHz frequency range and passes through zero at frequencies of about 100 MHz; it becomes positive in the 100-400 MHz frequency range. Using the spectra, more precise radio luminosities of pulsars are computed.
Izvekova Vera A.
Kuz'min A. D.
Malofeev Valerii M.
Shitov Iu. P.
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