Hostname: page-component-586b7cd67f-t7czq Total loading time: 0 Render date: 2024-11-28T05:02:28.478Z Has data issue: false hasContentIssue false
  • English
  • Français

Optimizing Pulsar Searches Against Propagation Effects*

Published online by Cambridge University Press:  12 April 2016

James Cordes
James Cordes*
Affiliation:
Astronomy Department, Cornell University

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Propagation effects are well known to limit the sensitivity of pulsar searches based on periodicity detections. I define several regimes for pulsar searches that are based on whether the search sensitivity is luminosity limited, dispersion limited or scattering limited. Consideration of these regimes allows general statements to be made about pulsar searches in and out of the Galactic plane. Telescope size matters, but only to a point. Once scattering becomes important it is better to search more sky (in a blind survey) than to integrate longer on a given sky position. Example surveys are described.

Type
Chapter Two Pulsars: Their Scattering and Intrinsic Properties
Information
International Astronomical Union Colloquium , Volume 182: Sources and Scintillations: Refraction and Scattering in Radio Astronomy , 2001 , pp. 47 - 52
Copyright
Copyright © Kluwer 2001

Footnotes

*

Work supported by NSF Grant 9819931.

References

Cordes, J.M. and Lazio, T.J.W.: 1991, Interstellar Scattering Effects on the Detection of Narrow-band Signals, Astrophys. J. 376, 123–134. CrossRefGoogle Scholar
Cordes, J.M. and Lazio, T.J.W.: 1997, Finding Pulsars in and Beyond the Galactic Center, Astrophys. J. 475, 557–564.Google Scholar
Hankins, T.H. and Rickett, B.J.: 1975, Pulsar signal processing, in: Methods in Computational Physics, Volume 14 - Radio Astronomy 14, 55–129.Google Scholar
Lundgren, S.C., Cordes, J.M., Ulmer, M., Matz, S.M., Lomatch, S., Foster, R.S. and Hankins, T.: 1995, Giant Pulses from the Crab Pulsar: A Joint Radio and Gamma-Ray Study, Astrophys. J. 453, 433–145.Google Scholar
Taylor, J.H. and Cordes, J.M.: 1993, Pulsar Distances and the Galactic Distribution of Free Electrons, Astrophys. J. 411, 674–684.Google Scholar