J. van Leeuwen
- PSR J1906+0746: From relativistic spin-precession to beam modeling
- Proceedings of the International Astronomical Union
- Pages (from-to)
- Document type
- Faculty of Science (FNWI)
- Anton Pannekoek Institute for Astronomy (API)
Shortly after the discovery of PSR J1906+0746, some hints of profile variations were already interpreted as first signs of relativistic spin-precession occuring. Using observations from the Nançay, Arecibo and Green Bank Radio Observatories, we report here the measurement of pulse profile and polarimetric variations. Using the Rotating Vector Model, we show that PSR J1906+0746 is likely to be an orthogonal rotator (α ≃ 80°). Fitting our polarimetric data to a precession model, we determined the geometry of the pulsar and found a wide misalignment angle (δ = 89−44 +85 deg, 95% C.L.), although the uncertainty is large. Assuming this geometry, we constructed the beam maps of both magnetic poles.
- go to publisher's site
- Proceedings title: Neutron stars and pulsars: challenges and opportunities after 80 years: proceedings of the 291st Symposium
of the International Astronomical Union, held in Beijing, China, 20-24 August 2012
Publisher: Cambridge University Press
Place of publication: Cambridge, UK
Editors: J. Leeuwen
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