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The anatomy of γ-ray pulsar light curves

Seyffert, A.S.; Venter, C.; Johnson, T.J.; Harding, A.K. (South African Institute of Physics, 2014)

To obtain constraints on the inclination and observer angles, α and ζ, of a γ-ray pulsar from its observed light curve (LC), we make use of geometric models detailing the position and extent of emission ...

The effect of different magnetospheric structures on predictions of gamma-ray pulsar light curves

Breed, M.; Venter, C.; Harding, A.K.; Johnson, T.J. (South African Institute of Physics, 2012)

The second pulsar catalogue of the Fermi Large Area Telescope (LAT) will contain in excess of 100 gamma-ray pulsars. The light curves (LCs) of these pulsars exhibit a variety of shapes, and also different relative phase ...

Modelling the y-ray and radio light curves of the double pulsar system

Seyffert, A.S.; Venter, C.; Harding, A.K.; Johnson, T.J. (South African Institute of Physics, 2014)

Guillemot et al. recently reported the discovery [1] of -ray pulsations from the 22.7 ms pulsar (pulsar A) in the famous double pulsar system J0737−3039A/B. The -ray light curve (LC) of pulsar A has two peaks separated ...

Modelling the light curves of Fermi LAT millisecond pulsars

Venter, C.; Johnson, T.J.; Harding, A.K.; Grove, J.E. (South African Institute of Physics, 2014)

There are 40 millisecond pulsars (MSPs) in the second pulsar catalogue of the Fermi Large Area Telescope (LAT). This pulsar subpopulation is unique owing to their relatively small magnetospheres. This may result in radio ...

Hard X-ray quiescent emission in magnetars via resonant Compton upscattering

Baring, M.G.; Wadiasingh, Z.; Gonthier, P.L.; Harding, A.K. (IOP Publishing, 2017)

Non-thermal quiescent X-ray emission extending between 10 keV and around 150 keV has been seen in about 10 magnetars by RXTE, INTEGRAL, Suzaku, NuSTAR and Fermi- GBM. For inner magnetospheric models of such hard X-ray ...

Multiwavelength analysis of four millisecond pulsars

Guillemot, L.; Venter, C.; Cognard, I.; Johnson, T.J.; Harding, A.K.; Fermi LAT (AIPC, 2011)

Radio timing observations of millisecond pulsars (MSPs) in support of Fermi LAT observations of the gamma-ray sky enhance the sensitivity of high-energy pulsation searches. With contemporaneous ephemerides we have detected ...

Unraveling the emission geometry of the Fermi millisecond pulsars

Venter, C.; Harding, A.K.; Guillemot, L. (Fermi, 2009)

The nine millisecond pulsars (MSPs) that have now been detected by Fermi-LAT are providing an excellent opportunity to probe the emission geometry of these ancient compact objects. As they are radio-loud, one may use the ...

Modeling light curves of the phase-aligned gamma-ray millisecond pulsar subclass

Venter, C.; Johnson, T.J.; Harding, A.K. (Fermi, 2011)

The gamma-ray population of millisecond pulsars (MSPs) detected by the Fermi Large Area Telescope (LAT) has been steadily increasing. A number of the more recent detections, including PSR J0034−0534, PSR J1939+2134 ...

Geometric modelling of radio and γ-ray light curves of 6 Fermi LAT pulsars

Seyffert, A.S.; Venter, C.; De Jager, O.C.; Harding, A.K. (Sissa Medialab, 2010)

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 ...

Modeling of gamma-ray millisecond pulsar light curves revealed by Fermi-LAT

Venter, C.; Harding, A.K.; Guillemot, L. (Thê Giói Publishers, 2009)

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 ...