Short-term intrinsic-intensity variations of pulsars

Details Short-term intrinsic-intensity variations of pulsars Short-term intrinsic-intensity variations of pulsars

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984japa....5..483k&link_type=abstract

Journal of Astrophysics and Astronomy (ISSN 0250-6335), vol. 5, Dec. 1984, p. 483-493.

Astronomy and Astrophysics

Astrophysics

1

Pulsars, Radio Emission, Stellar Radiation, Autocorrelation, Bandwidth, Radiant Flux Density, Scintillation

Scientific paper

The authors present a method to separate the autocorrelation function of the short-term broadband intensity variations of pulsars from that of the interstellar scintillations. The method assumes that the intrinsic variations are correlated over a bandwidth much larger than the decorrelation bandwidth for scintillations. Hence the ratio of the power in the variations due to the two causes depends on the bandwidth used. By applying the method to the intensity variations of 24 pulsars, the authors show that the presence of short-term intrinsic variations is very common in the radiation of pulsars. Quasi-periodicities were detected in the intensity variations of many pulsars, but their origin is not clear.

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