========================================================================== J/A+AS/147/195 Pulsar spectra of radio emission (Maron+, 2000) The following files can be converted to FITS (extension .fit .fgz or .fiZ) table2.dat ========================================================================== Query from: http://vizier.u-strasbg.fr/cgi-bin/VizieR?-source=J/A+AS/147/195 ==========================================================================
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Beginning of ReadMe : J/A+AS/147/195 Pulsar spectra of radio emission (Maron+, 2000) ================================================================================ Pulsar spectra of radio emission. Maron O., Kijak J., Kramer M., Wielebinski R. <Astron. Astrophys. Suppl. Ser. 147, 195 (2000)> =2000A&AS..147..195M (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: Pulsars ; Radio sources Keywords: pulsars: general - radiation mechanisms: non-thermal Abstract: We have collected pulsar flux density observations and compiled spectra of 281 objects. The database of Lorimer et al. (1995, Cat. J/MNRAS/273/411) has been extended to frequencies higher than 1.4GHz and lower than 300MHz. Our results show that above 100 MHz the spectra of the majority of pulsars can be described by a simple power law with average value of spectral index <alpha>=-1.8+/-0.2. A rigorous analysis of spectral fitting revealed only about 10% of spectra which can be modelled by the two power law. Thus, it seems that single power law is a rule and the two power law spectrum is a rather rare exception, of an unknown origin, to this rule. We have recognized a small number of pulsars with almost flat spectrum (alpha>=-1.0) in the wide frequency range (from 300MHz to 20GHz) as well as few pulsars with a turn-over at unusually high frequency ( 1GHz).
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