Radio Observations And Interstellar Magnetic Fields Characteristics: The Power Spectrum And Magnetic Helicity

Details Radio Observations And Interstellar Magnetic Fields Characteristics: The Power Spectrum And Magnetic Helicity Radio Observations And Interstellar Magnetic Fields Characteristics: The Power Spectrum And Magnetic Helicity

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21743438v&link_type=abstract

American Astronomical Society, AAS Meeting #217, #434.38; Bulletin of the American Astronomical Society, Vol. 43, 2011

Statistics

Scientific paper

We study possible relationships between turbulent magnetic field properties and radio emission statistics using numerical models of the ISM with variable helical and spectral characteristics of magnetic fields. We discuss how spectral analysis of the total and polarized intensity maps can be used to estimate the power spectrum of the magnetic field. We present a new solution which connects magnetic helicity and correlation between Faraday rotation measure and polarization degree of radio synchrotron emission. Effects of depolarization play the main role in this problem and allow us to detect magnetic helicity for certain frequency band of observable radio emission.

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