Geometric modelling of radio and γ-ray light curves of 6 Fermi LAT pulsars
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Date
Authors
Seyffert, A.S.
Venter, C.
De Jager, O.C.
Harding, A.K.
Journal Title
Journal ISSN
Volume Title
Publisher
Sissa Medialab
Abstract
The Fermi Large Area Telescope (LAT) has recently reported the detection of pulsed γ-rays
from 6 young pulsars (J0631+1036, J0659+1414, J0742−2822, J1420−6048, J1509−5850, and
J1718−3825), all exhibiting single-peaked pulse profiles [19]. High-quality radio polarization
data are also available for 5 of these pulsars, allowing derivation of constraints on their viewing
geometries. We obtain independent constraints on the viewing geometries of these pulsars by
using a geometric pulsar emission code to model the Fermi LAT and radio light curves. We find
fits for the magnetic inclination and observer angles α and ζ with typical errors of ∼ 5
◦
. Our
results are generally consistent with those obtained by [19], although we do find differences in
some cases. Our model may lastly provide a framework to constrain the radio emission altitude
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Citation
Seyffert, A.S. et al. 2010. Geometric modelling of radio and γ-ray light curves of 6 Fermi LAT pulsars. 25th Texas Symposium on Relativistic Astrophysics, 6-10 Dec, Heidelberg, Germany. Proceedings of science, 2010: Article no 130. [https://pos.sissa.it/123/130/pdf]