Pulsar spectra of radio emission (Maron+, 2000)

Details Pulsar spectra of radio emission (Maron+, 2000) Pulsar spectra of radio emission (Maron+, 2000)

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000ycat..41470195m&link_type=abstract

VizieR On-line Data Catalog: J/A+AS/147/195. Originally published in: 2000A&AS..147..195M

Computer Science

Pulsars, Radio Sources

Scientific paper

We have collected pulsar flux density observations and compiled spectra of 281 objects. The database of Lorimer et al. (1995, Cat. ) 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 <α>=-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 (α>=-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). (1 data file).

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