Gonthier, Peter L.; Ouellette, Michelle S.; O'Brien, Shawn; Berrier, Joel; Harding, Alice K.
Referencia bibliográfica
RELATIVISTIC ASTROPHYSICS: 20th Texas Symposium. AIP Conference Proceedings, Volume 586, pp. 547-549 (2001).
Fecha de publicación:
10
2001
Número de citas
0
Número de citas referidas
0
Descripción
We simulate the characteristics of the Galactic population of radio and
gamma-ray pulsars using Monte Carlo techniques. At birth, neutron stars
are spatially distributed with supernova-kick velocities in the Galactic
disk and randomly dispersed in age back to 109 years. They
are evolved in the Galactic gravitational potential to the present time.
From a radio luminosity model, the radio flux is filtered through a
selected set of radio-survey parameters. Using the features of recent
polar cap acceleration models invoking space-charge-limited flow, a
pulsar death region further attenuates the population of radio-loud
pulsars, and gamma-ray luminosities are assigned. Assuming a featureless
emission geometry of 1 steradian corresponding to an alignment of the
radio and gamma-ray beams, our model predicts that EGRET should have
seen 17 radio loud and 5 radio quiet, gamma-ray pulsars. GLAST, on the
other hand, is expected to observe 132 radio loud and 212 radio quiet,
gamma-ray pulsars of which 21 are expected to be identified as pulsed
sources. .