A Perturbative Analysis of Synchrotron Spectral Index Variation over Microwave Sky

In this paper, we implement a perturbative approach, first proposed by Bouchet & Gispert (1999), to estimate variation of spectral index of galactic polarized synchrotron emission, using linear combination of simulated Stokes Q polarization maps of selected frequency bands from WMAP and Planck o...

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Veröffentlicht in:	arXiv.org 2015-09
Hauptverfasser:	Saha, Rajib, Aluri, Pavan Kumar
Format:	Artikel
Sprache:	eng
Schlagworte:	Computer simulation Covariance matrix Dust Empirical analysis Frequencies Maximum likelihood method Physics - Astrophysics of Galaxies Physics - Cosmology and Nongalactic Astrophysics Pixels Probability density functions Spectra
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