Modeling of gamma-ray millisecond pulsar light curves revealed by Fermi-LAT
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Authors
Venter, C.
Harding, A.K.
Guillemot, L.
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Thê Giói Publishers
Abstract
Fermi Large Area Telescope (LAT) has recently detected 8 gamma-ray millisecond pulsars
(MSPs), providing an unprecedented opportunity to probe the magnetospheres of these lowspin-down pulsars. We performed 3D emission modeling, including various Special Relativistic
effects, in the context of pair-starved polar cap (PSPC), slot gap (SG), and outer gap (OG)
pulsar models. Most of the light curves are best fit by SG and OG models, surprisingly
indicating the presence of narrow accelerating gaps limited by robust pair production. All
model fits imply high-altitude emission, and we observe exclusive differentiation of the current
gamma-ray MSP population into two sub-classes: light curve shapes and lags across wavebands
impose either PSPC or SG / OG-type geometries
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Citation
Venter, C. et al. 2009. Modeling of gamma-ray millisecond pulsar light curves revealed by Fermi-LAT. Proceedings of the XXIst Rencontres de Blois, Château de Blois, Loire Valley, France, June 21-26. [https://arxiv.org/pdf/0911.4890.pdf]