Phenomenology of pulsar B0809+74's rotating subbeam system

II. “Carousel” configuration and polarization

¹ Sterrenkundig Instituut “Anton Pannekoek”, 1098 SJ Amsterdam, The Netherlands e-mail: jrankin@astro.uva.nl;joanna.rankin@uvm.edu
² Department of Astronomy, University of California, Berkeley, CA 94720, USA e-mail: ramach12@gmail.com
³ Department of Physics & Astronomy, University of British Columbia, Vancouver, V6T 1Z1 Canada e-mail: joeri@astro.ubc.ca
⁴ Pushchino Radio Astronomy Observatory, 142290 Pushchino, Russia e-mail: suleym@prao.psn.ru
⁵ Isaac Newton Institute of Chile, Pushchino Branch

Received: 26 October 2005
Accepted: 6 January 2005

Abstract

Building on results and analyses of previous works, the structure and polarization of B0809+74's subbeam “carousel” is delimited, but not fully solved. Some 8–10 subbeams are indicated for an equatorward sightline traverse and 25–40 for a polarward one. Either alternative indicates a subbeam circulation time much longer than predicted by theory. Polarized subbeam maps show complex structure and suggest that the star's polarized modes are angularly disjoint.