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We report the detection of gamma-ray pulsations from the high-magnetic-fieldrotation-powered pulsar PSR J1119-6127 using data from the Fermi Large AreaTelescope. The gamma-ray light curve of PSR J1119-6127 shows a single, widepeak offset from the radio peak by 0.43 pm 0.02 in phase. Spectral analysissuggests a power law of index 1.0 pm 0.3 with an energy cut-off at 0.8 pm 0.2GeV. The first uncertainty is statistical and the second is systematic. Wediscuss the emission models of PSR J1119-6127 and demonstrate that despite theobject's high surface magnetic field---near that of magnetars---the fieldstrength and structure in the gamma-ray emitting zone are apparently similar tothose of typical young pulsars. Additionally, we present upper limits on the\gam-ray pulsed emission for the magnetically active PSR J1846-0258 in thesupernova remnant Kesteven 75 and two other energetic high-B pulsars, PSRsJ1718-3718 and J1734-3333. We explore possible explanations for thenon-detection of these three objects, including peculiarities in their emissiongeometry.

Observations of Energetic High Magnetic Field Pulsars with the Fermi Large Area Telescope