Scintillation & Pulsar Timing: Low-level Timing Noise from the Kolmogorov Halo

Details Scintillation & Pulsar Timing: Low-level Timing Noise from the Kolmogorov Halo Scintillation & Pulsar Timing: Low-level Timing Noise from the Kolmogorov Halo

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006chjas...6b.185h&link_type=abstract

Chinese Journal of Astronomy and Astrophysics, Supplement, Volume 6, Issue S2, Proceedings of the 2005 Lake Hanas International

Astronomy and Astrophysics

Astrophysics

Ism, Pulsars: Individual (B1133+16, B1737+13, B1933+16), Pulsars: General, Scattering

Scientific paper

Many systematic effects need to be removed in order to obtain the highest quality pulsar timing data. Interstellar propagation effects may be reduced by employing coherent dedispersion and observing at 1 GHz or above to avoid strong scattering. However, these techniques may not adequately bring propagation effects below the level of other systematic or random errors in the observation. We show that low-level scattering in a Kolmogorov halo produces time delays that are much larger than normally recognized and are time variable. These may be a significant source of noise in some high precision timing efforts.

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