Cordes-Lazio NE2001 Galactic Free Electron Density Model

This document provides an interface to the Cordes-Lazio model for the Galactic distribution of free electrons (Cordes & Lazio 2002). By specifying a line of sight, one can calculate various scattering and scintillation quantities at a specified frequency.

Lines of sight can be specified by

Alternately, one can download the source code (68 kB gzip'ed tar file) for the model and incorporate it into programs locally.


See also


Cordes & Lazio 2002

Cordes, J. M. & Lazio, T. J. W. 2002, "NE2001. I. A New Model for the Galactic Distribution of Free Electrons and its Fluctuations"; astro-ph/0207156

Cordes & Lazio 2003

Cordes, J. M. & Lazio, T. J. W. 2003, "NE2001. II. Using Radio Propagation Data to Construct a Model for the Galactic Distribution of Free Electrons"; astro-ph/0301598


Contours of DM and log SM (Graphical Interface)

These images show contours of constant dispersion measure (DM) and (the logarithm of the) scattering measure (SM). Clicking in one of these images will report the various scattering parameters for the specified line of sight for a distance of 30 kpc.
Contours of Dispersion Measure Contours of (log)Scattering Measure


Arbitrary Line of Sight (Text Interface)

Line of sight:

Integrate to a

Report quantities appropriate for a frequency of GHz. (Frequency scalings will be assumed to be Kolmogorov, and the default frequency is 1 GHz.)


Pulsars

Select a pulsar:

Report quantities appropriate for a frequency of GHz. (Frequency scalings will be assumed to be Kolmogorov, and the default frequency is 1 GHz.)


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