Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· References in the article
· Citations to the Article (244) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (75)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Small-scale electron density turbulence in the interstellar medium
Authors:
Cordes, J. M.; Weisberg, J. M.; Boriakoff, V.
Affiliation:
AA(Cornell University; National Astronomy and Ionosphere Center, Ithaca, NY), AB(Princeton University, Princeton, NJ), AC(National Astronomy and Ionosphere Center, Ithaca, NY)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 288, Jan. 1, 1985, p. 221-247. Research supported by the California Institute of Technology. (ApJ Homepage)
Publication Date:
01/1985
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
ELECTRON DENSITY (CONCENTRATION), INTERSTELLAR MATTER, PULSARS, TURBULENCE, CROSS CORRELATION, LINE OF SIGHT, RADIATIVE TRANSFER, STELLAR RADIATION, STELLAR SPECTRA, WAVE SCATTERING
DOI:
10.1086/162784
Bibliographic Code:
1985ApJ...288..221C

Abstract

Diffraction phenomena associated with the scattering of pulsar radiation are used to constrain the power spectrum and galactic distribution of electron density fluctuations. The authors combine new measurements of interstellar scintillation bandwidths and pulse broadening times with those from the literature to yield information on 76 lines of sight. For individual objects, the scaling of scintillation bandwidth with frequency is in agreement with a Kolmogorov spectrum. The study of all objects, however, indicates strong disagreement with a model in which turbulence is uniformly distributed. The data suggest a two-component model for electron density turbulence: (1) a clumped medium with scale height H ⪅ 100 pc; (2) a nearly uniform medium with H ⪆ 0.5 kpc. Scattering material is ubiquitous but is preferentially located near regions of large energy input into the interstellar medium.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences


More Article Retrieval Options

HELP for Article Retrieval
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
  New!

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints