Issue |
A&A
Volume 455, Number 1, August III 2006
|
|
---|---|---|
Page(s) | 215 - 221 | |
Section | Stellar structure and evolution | |
DOI | https://doi.org/10.1051/0004-6361:20054417 | |
Published online | 31 July 2006 |
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
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.
Key words: stars: pulsars: individual: B0809+74 / polarization / radiation mechanisms: non-thermal
© ESO, 2006
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