Observations and Modeling of Gamma-ray Millisecond Pulsars seen with the Fermi LAT

Tyrel J. Johnson, Christo Venter, Alice K. Harding, Lucas Guillemot on behalf of the Fermi LAT Collaboration, Pulsar Timing Consortium

Published 2010-12-16Version 1

We present a summary of gamma-ray millisecond pulsar (MSP) observations with the Fermi Large Area Telescope. The radio and gamma-ray light curves of these MSPs have been modeled in the framework of the retarded vacuum dipole magnetic field. Likelihood fitting of the radio and gamma-ray light curves with geometric emission models allows us to give model-dependent confidence contours for the viewing geometry in these systems which are complementary to those from polarization measurements.