Hostname: page-component-745bb68f8f-f46jp Total loading time: 0 Render date: 2025-02-03T08:56:46.461Z Has data issue: false hasContentIssue false
  • English
  • Français

Low-Frequency Cutoffs in Synchrotron Spectra and the Optical Spectrum of NP 0532

Published online by Cambridge University Press:  07 February 2017

Stephen L. O'Dell  and
L. Sartori
Stephen L. O'Dell
Affiliation:
Department of Physics and Center for Space Research, Massachusetts Institute of Technology, Cambridge, Mass., U.S.A.
L. Sartori
Affiliation:
Department of Physics and Center for Space Research, Massachusetts Institute of Technology, Cambridge, Mass., U.S.A.

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.

We point out the existence of a natural low-frequency cutoff in the spectrum of a synchrotron source. The turnover frequency is eB/mc 〈sin Ψ〉, where Ψ is the pitch angle for the electron motion. The spectrum below the turnover goes as vn, where n is the index in the electron energy distribution. For the Crab pulsar, a model with B ~ 106–107G and 〈sin Ψ〉 ~ 10-3–10-2 provides a plausible explanation for the turnover observed in the infrared.

Type
Session 8
Information
Symposium - International Astronomical Union , Volume 46: The Crab Nebula , 1971 , pp. 457 - 459
Copyright
Copyright © Reidel 1971 

References

Neugebauer, G., Becklin, E. E., Kristian, J., Leighton, R. B., Snellen, G., and Westphal, J. A.: 1969 Astrophys. J. Letters 156, L115.Google Scholar
Oke, J. B.: 1969, Astrophys. J. Letters 156, L49.Google Scholar
Shklovsky, I. S.: 1970, Astrophys. J. Letters 159, L77.Google Scholar