ar X iv : a st ro - p h / 99 02 20 1 v 1 1 4 Fe b 19 99 CMB Synchrotron Foreground
نویسنده
چکیده
Synchrotron emission is an important process in Galactic dynamics and a potentially confusing foreground for cosmic microwave background (CMB) radiation observations. Though the mechanism of synchrotron emission is well understood, the details for the Galaxy and many external sources is not well characterized. Quality maps at multiple frequencies are lacking but needed for a full understanding of the Galactic synchrotron emission, including intensity, spectrum, and spectral variation. At high frequencies (> 70 GHz) synchrotron emission is not a severe limitation to precise CMB observations well away from the Galactic plane.
منابع مشابه
ar X iv : a st ro - p h / 99 02 31 4 v 1 2 2 Fe b 19 99 Polarized Foreground from Thermal Dust Emission
In this review, we intend to present the current knowledge of the polarized emission from thermal dust in our Galaxy. We show different methods to estimate the spatial distribution statistics of this emission in the lack of any data from the diffuse ISM, and compare it to the expected CMB polarized signal. We finally show how this contaminant could be efficiently removed from CMB maps using mul...
متن کاملar X iv : a st ro - p h / 99 02 30 1 v 1 2 0 Fe b 19 99 On the Stability of the CMB Autocorrelation Function on Cosmological Parameters
The properties of the Cosmic Microwave Background Radiation angular autocorrelation function in Friedman Universe with negative curvature (k = −1) are studied. The dependence of the spectral index of autocorrelation function on the density parameter of the Universe is studied numerically, taking into account the effect of geodesic mixing, occuring in k = −1 curvature Universes.
متن کاملar X iv : a st ro - p h / 99 02 26 6 v 1 1 8 Fe b 19 99 High Energy Cosmic Rays from Neutrinos
We discuss recent models in which neutrinos, which are assumed to have mass in the eV range, originate the highest energy cosmic rays by interaction with the enhanced density in the galactic halo of the relic cosmic neutrino background. We make an analytical calculation of the required neutrino fluxes
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1999