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Analysis and discussion of a sample of 25 gigahertz-peaked spectra pulsars

Published online by Cambridge University Press:  04 June 2018

Jarosław Kijak ,
Wojciech Lewandowski  and
Karolina Rożko
Jarosław Kijak
Affiliation:
Janusz Gil Institute of Astronomy, University of Zielona Góra, ul. Szafrana 2, 65-516 Zielona Góra, Poland email: J.Kijak@ia.uz.zgora.pl
Wojciech Lewandowski
Affiliation:
Janusz Gil Institute of Astronomy, University of Zielona Góra, ul. Szafrana 2, 65-516 Zielona Góra, Poland email: J.Kijak@ia.uz.zgora.pl
Karolina Rożko
Affiliation:
Janusz Gil Institute of Astronomy, University of Zielona Góra, ul. Szafrana 2, 65-516 Zielona Góra, Poland email: J.Kijak@ia.uz.zgora.pl
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Abstract

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We identified gigahertz-peaked spectra behavior from our radio interferometric observations at low frequencies using the Giant Metrewave Radio Telescope. We modeled the turnover spectra based on thermal free-free absorption in the interstellar medium. The free-free absorption is believed to be responsible for the inverted spectrum. Using the model, we were able to put some observational constrains on the physical parameters of the absorbing matter, which allows us to distinguish between the possible sources of absorption.

Keywords

pulsarsradio spectra
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S337: Pulsar Astrophysics the Next Fifty Years , September 2017 , pp. 352 - 353
Copyright
Copyright © International Astronomical Union 2018 

References

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