Fitting formula for flux scintillation of compact radio sources

J. Goodman, R. Narayan

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

We present a fitting function to describe the statistics of flux modulations caused by interstellar scintillation. The function models a very general quantity: the cross-correlation of the flux observed from a compact radio source of finite angular size observed at two frequencies and at two positions or times. The formula will be useful for fitting data from sources such as intraday variables and gamma-ray burst afterglows. These sources are often observed at relatively high frequencies (several gigahertz), where interstellar scattering is neither very strong nor very weak, so that asymptotic formulae are inapplicable.

Original languageEnglish (US)
Pages (from-to)510-527
Number of pages18
JournalAstrophysical Journal
Volume636
Issue number1 I
DOIs
StatePublished - Jan 1 2006

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Keywords

  • Methods: data analysis
  • Radio continuum: general
  • Scattering

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