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Title

Simultaneous single-pulse observations of radio pulsars II. Orthogonal polarization modes in PSR B1133+16

Author(s)

Karastergiou, A.;  Kramer, M.;  Johnston, S.;  Lyne, A. G.;  Bhat, N. D. R.;  Gupta, Y.

Abstract

In this letter, we present a study of orthogonal polarization modes in the radio emission of PSR B1133+16, conducted within the frame of simultaneous, multi-frequency, single-pulse observations. Simultaneously observing at two frequencies (1.41 GHz and 4.85 GHz) provides the means to study the bandwidth of polarization features such as the polarization position angle. We find two main results. First, that there is a high degree of correlation between the polarization modes at the two frequencies. Secondly, the modes occur more equally and the fractional linear polarization decreases towards higher frequencies. We discuss this frequency evolution and propose propagation effects in the pulsar magnetosphere as its origin.

Publication type

Journal article

Source

Astronomy and Astrophysics, Vol. 391, no. 1 (Aug 2002), pp. 247-251

Publication year

2002

FOR Code(s)

0201 Astronomical and Space Sciences

Keyword(s)

Pulsars;  PSR B1133+16

Publisher

EDP Sciences

ISSN

0004-6361

Publisher URL

http://dx.doi.org/10.1051/0004-6361:20020793

Copyright

Copyright © 2002 ESO. The published version is reproduced in accordance with the copyright policy of the publisher.

Full text

Peer reviewed