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arXiv · 1211.3937

PSR J1906+0746: From relativistic spin-precession to beam modeling

Gregory Desvignes·Michael Kramer·Ismaël Cognard·Laura Kasian·Joeri van Leeuwen·Ingrid Stairs·Gilles Theureau
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Abstract

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 Nan\c{c}ay, 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 ($\alpha \simeq 80^\circ$). Fitting our polarimetric data to a precession model, we determined the geometry of the pulsar and found a wide misalignment angle ($\delta = 89_{-44}^{+85}$ deg, 95% C.L.), although the uncertainty is large. Assuming this geometry, we constructed the beam maps of both magnetic poles.

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Gregory Desvignes, Michael Kramer, Ismaël Cognard, Laura Kasian, Joeri van Leeuwen, Ingrid Stairs, Gilles Theureau. 2012-11-16. PSR J1906+0746: From relativistic spin-precession to beam modeling. https://doi.org/10.1017/s1743921312023630

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