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Abstract: Pulsars are among the prime targets for the Large Area Telescope LAT aboardthe recently launched Fermi observatory. The LAT will study the gamma-rayUniverse between 20 MeV and 300 GeV with unprecedented detail. Increasingnumbers of gamma-ray pulsars are being firmly identified, yet their emissionmechanisms are far from being understood. To better investigate and exploit theLAT capabilities for pulsar science, a set of new detailed pulsar simulationtools have been developed within the LAT collaboration. The structure of thepulsar simulator package PulsarSpectrum is presented here. Starting from photondistributions in energy and phase obtained from theoretical calculations orphenomenological considerations, gamma rays are generated and their arrivaltimes at the spacecraft are determined by taking into account effects such asbarycentric effects and timing noise. Pulsars in binary systems also can besimulated given orbital parameters. We present how simulations can be used forgenerating a realistic set of gamma rays as observed by the LAT, focusing onsome case studies that show the performance of the LAT for pulsar observations.



Autor: M. Razzano, A.K. Harding, L. Baldini, R. Bellazzini, J. Bregeon, T. Burnett, J. Chiang, S.W. Digel, R. Dubois, M.W. Kuss, L. Latr

Fuente: https://arxiv.org/







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