Statistics – Applications
Scientific paper
Jan 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...420l..75d&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 420, no. 2, p. L75-L78
Statistics
Applications
71
Applications Of Mathematics, Energetic Particles, Gamma Rays, Linear Polarization, Neutron Stars, Particle Acceleration, Pulsar Magnetospheres, Pulsars, Radio Emission, Angular Velocity, Density, Electric Fields, Gamma Ray Observatory, Luminosity, Magnetic Fields, Polar Caps
Scientific paper
We examine a nearly aligned pulsar model with polar cap acceleration in order to explain the energetics and number of the known gamma-ray pulsars. In this model, the efficiency of converting spin-down luminosity to gamma-ray luminosity increases with decreasing spin-down luminosity, a trend recently emphasized by Ulmer. The predicted gamma-ray flux is proportional to dot P3/4/P5/4 d2, where P is the period, dot P is the period derivative, and d is the distance to the pulsar. For initial spin periods between approximately equals 10 and 30 ms and neutron star polar magnetic fields between approximately equals 1 and 4 TG, this model accounts for the number and age distribution of the five pulsars which have been observed to emit gamma rays at energies greater than 100 MeV. Implications for pulsar studies are considered.
Dermer Charles D.
Sturner Steven J.
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