The galactic distribution of free electrons
The galactic distribution of free electrons
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DOI:
10.1038/354121a0
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发表时间:
1991-11
期刊:
影响因子:
64.8
通讯作者:
J. Cordes;J. Weisberg;D. Frail;S. R. Spangler;Michael J. Ryan
中科院分区:
文献类型:
--
作者:
J. Cordes;J. Weisberg;D. Frail;S. R. Spangler;Michael J. Ryan
Dispersion, distance and scattering measurements of pulsars and other radio sources are now sufficiently numerous to allow modelling of the entire galactic distribution of free electrons. A two-component axisymmetric model of local electron density, fitted on all scales from 100 km to a few parsecs, accounts for most of the data; a population of dense, discrete clouds is also needed, and there is some evidence for spiral structure.