The angular power spectra of polarized Galactic synchrotron

Details The angular power spectra of polarized Galactic synchrotron The angular power spectra of polarized Galactic synchrotron

2000-06-27

arxiv.org/abs/astro-ph/0006387v1

New Astronomy (2000), v. 5, p. 181-190

Astronomy and Astrophysics

Astrophysics

15 pages with 6 eps figures. Accepted for publication in New Astronomy

Scientific paper

10.1016/S1384-1076(00)00025-7

We derive the angular power spectra of intensity and polarization of Galactic synchrotron emission in the range 36 < l < 10^3 from the Parkes survey mapping the southern Galactic plane at 2.4 GHz. The polarization spectra of both electric and magnetic parity up to l \simeq 10^3 are approximated very well by power laws with slope coefficients \simeq 1.4, quite different from the CMB spectra. We show that no problem should arise from Galactic synchrotron for measurements of CMB polarization in the cosmological window.

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