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Is anomalous scattering typical for pulsars?

Published online by Cambridge University Press:  04 June 2018

Wojciech Lewandowski ,
Jarosław Kijak ,
Leszek Błaszkiewicz ,
Karolina Rożko  and
Andrzej Krankowski
Wojciech Lewandowski
Affiliation:
Janusz Gil Institute of Astronomy, University of Zielona Góra, ul. Szafrana 2, 65-516 Zielona Góra, Poland email: w.lewandowski@ia.uz.zgora.pl
Jarosław Kijak
Affiliation:
Janusz Gil Institute of Astronomy, University of Zielona Góra, ul. Szafrana 2, 65-516 Zielona Góra, Poland email: w.lewandowski@ia.uz.zgora.pl
Leszek Błaszkiewicz
Affiliation:
Space Radio-Diagnostics Research Centre, University of Warmia and Mazury, Prawocheńskiego 9, 10-720 Olsztyn, Poland Faculty of Mathematics and Computer Sciences, University of Warmia and Mazury, Słoneczna 54, 10-710 Olsztyn, Poland
Karolina Rożko
Affiliation:
Janusz Gil Institute of Astronomy, University of Zielona Góra, ul. Szafrana 2, 65-516 Zielona Góra, Poland email: w.lewandowski@ia.uz.zgora.pl
Andrzej Krankowski
Affiliation:
Space Radio-Diagnostics Research Centre, University of Warmia and Mazury, Prawocheńskiego 9, 10-720 Olsztyn, Poland
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Abstract

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Recent studies of interstellar scattering frequency evolution indicate, that for a large number of pulsars the measured scatter time to frequency scaling does not follow predictions based upon simple scattering models. The number of such deviations suggests, that what was previously known as “anomalous scattering” is actually quite normal for a large subset of the pulsar population. New observations are needed, especially at low frequencies, to study the scattering of low-DM objects. In this regard even small telescopes, such as single LOFAR stations - like PL-612 in Bałdy, near Olsztyn, Poland - can be extremely helpful.

Keywords

pulsars: generalISM: genera

References

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