Bibcode
López-Caraballo, C. H.; Génova-Santos, R.
Bibliographical reference
Highlights of Spanish Astrophysics VII, Proceedings of the X Scientific Meeting of the Spanish Astronomical Society (SEA), held in Valencia, July 9 - 13, 2012, Eds.: J.C. Guirado, L.M. Lara, V. Quilis, and J. Gorgas., pp.256-257
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5
2013
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0
Refereed citations
0
Description
The standard physical mechanisms of the continuum emission in the
microwave range are the synchrotron, free-free, and/or thermal dust
emissions. Nevertheless, and based on observations over the last two
decades, we can find a new process of emission, called Anomalous
Microwave Emission (AME), which consists of an excess of dust-correlated
microwave emission (10-60 GHz). Observational studies of the AME, both
in intensity and polarization, allowed us to extend our knowledge of the
different physical processes in the Interstellar Medium (ISM), as well
as its implications in the study of the inflationary epoch of the
Universe, via the possible effects in the detectability of the
polarization of the Cosmic Microwave Background (CMB), in particular the
detection of B-modes. In this talk, we present a summary of the
observational measurements of the polarization of the AME for: 1) the
diffuse Galactic emission (only two works based on the WMAP data); and
2) individual Galactic regions, two H{II} regions LPH96 and Helix; and
four dust clouds Perseus, ρ Ophiuchi, LDN1622 and Pleiades). Around
the peak of the emission (20-30 GHz), the constraints on the fractional
polarization of AME are of the order of ˜1% (95% C.L.) for both
individual compact and large-scale Galactic regions. Then, we use these
constraints in order to test the theoretical AME models available to
date. Finally, we discuss the effects of a polarized diffuse AME
contribution on the current and future polarized CMB experiments.