Gamma-ray and Radio Properties of Six Pulsars Detected by the Fermi Large Area Telescope

Abstract

We report the detection of pulsed gamma-rays for PSRs J0631+1036, J0659+1414, J0742-2822, J1420-6048, J1509-5850 and J1718-3825 using the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope (formerly known as GLAST). Although these six pulsars are diverse in terms of their spin parameters, they share an important feature: their gamma-ray light curves are (at least given the current count statistics) single peaked. For two pulsars there are hints for a double-peaked structure in the light curves. The shapes of the observed light curves of this group of pulsars are discussed in the light of models for which the emission originates from high up in the magnetosphere. The observed phases of the gamma-ray light curves are, in general, consistent with those predicted by high-altitude models, although we speculate that the gamma-ray emission of PSR J0659+1414, possibly featuring the softest spectrum of all Fermi pulsars coupled with a very low efficiency, arises from relatively low down in the magnetosphere. High-quality radio polarization data are available showing that all but one have a high degree of linear polarization. This allows us to place some constraints on the viewing geometry and aids the comparison of the gamma-ray light curves with high-energy beam models.

24 pages, 19 figures, Accepted for publications in Astrophysical Journal

References in corpus (20)

• TEMPO2, a new pulsar timing package. I: Overview
• Tempo2, a new pulsar timing package. II: The timing model and precision estimates
• Fermi Large Area Telescope Bright Gamma-ray Source List
• Detection of 16 Gamma-Ray Pulsars Through Blind Frequency Searches Using the Fermi LAT
• HESS VHE Gamma-Ray Sources Without Identified Counterparts
• Profile and polarization characteristics of energetic pulsars
• Fermi LAT Observations of the Vela Pulsar
• Is pulsar B0656+14 a very nearby RRAT source?
• Fitting Pulsar Wind Tori. II. Error Analysis and Applications
• Profile morphology and polarization of young pulsars
• Pulsar Timing for the Fermi Gamma-ray Space Telescope
• X-ray Observations of Parsec-Scale Tails behind Two Middle-Aged Pulsars
• Altitude-dependent polarization in radio pulsars
• The bright spiky emission of pulsar B0656+14
• Mapping the magnetosphere of PSR B1055-52
• The Geminga Fraction
• UV emission from young and middle-aged pulsars: Connecting X-rays with the optical
• Statistics of the individual-pulse polarization based on propagation effects in pulsar magnetosphere
• Radio and X-ray nebulae associated with PSR J1509-5850
• Discovery of an X-ray nebula around PSR J1718-3825 and implications for the nature of the gamma-ray source HESS J1718-385

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