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http://hdl.handle.net/2248/656
Title: | Spacetime curvature, rotation and the pulse profile of fast pulsars |
Authors: | Datta, B Kapoor, R. C |
Keywords: | Spacetime Curvature Rotation Neutron Star-fast Pulsars-pulse profile |
Issue Date: | Sep-1985 |
Publisher: | Astronomical Society of India |
Citation: | BASI, Vol. 13, No. 3, pp. 217-224 |
Abstract: | Propagation of photons in the spacetime exterior to a rapidly rotating neutron star is investigated, using a rotationally perturbed spherical metric, to determine the pulse profile of fast pulsars. We find that spacetime curvature produces a substantial amount of divergence in the pulse beam width accompained be a reduction in the pulse intensity. Effects due to rotation are comparatively smaller, but rotation has the qualitatively important feature of producing a tilt of the pulse cone in the direction of rotation and a deformation of the cone. The asymmetry in the pulse profile so caused introduces a time delay in the arrival of photons emitted within the cone, which, in turn, affects the duty cycle of the pulsar. |
URI: | http://hdl.handle.net/2248/656 |
Appears in Collections: | BASI Publications |
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