The State-of-Play of Anomalous Microwave Emission (AME) research

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Dickinson, Clive ^[1] ; Ali-Haimoud, Y. ^[2] ; Barr, A. ^[1] ; Battistelli, E. S. ^[3] ; Bell, A. ^[4] ; Bernstein, L. ^[5] ; Casassus, S. ^[6] ; Cleary, K. ^[7] ; Draine, B. T. ^[8] ; Genova-Santos, R. ^{[9, 10]} ; Harper, S. E. ^[1] ; Hensley, B. ^{[7, 11]} ; Hill-Valler, J. ^[12] ; Hoang, Thiem ; Israel, F. P. ^[13] ; Jew, L. ^[12] ; Lazarian, A. ^[14] ; Leahy, J. P. ^[1] ; Leech, J. ^[12] ; Lopez-Caraballo, C. H. ^{[15, 16]} ; McDonald, I. ^[1] ; Murphy, E. J. ^[17] ; Onaka, T. ^[4] ; Paladini, R. ^[18] ; Peel, M. W. ^{[1, 19]} ; Perrott, Y. ^[20] ; Poidevin, F. ^{[9, 10]} ; Readhead, A. C. S. ^[7] ; Rubino-Martin, J. -A. ^{[9, 10]} ; Taylor, A. C. ^[12] ; Tibbs, C. T. ^[21] ; Todorovic, M. ^[22] ; Vidal, Matias ^[6]

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^[1] Univ Manchester, Sch Phys & Astron, Jodrell Bank Ctr Astrophys, Oxford Rd, Manchester M13 9PL, Lancs - England

^[2] NYU, Ctr Cosmol & Particle Phys, Dept Phys, New York, NY 10003 - USA

^[3] Sapienza Univ Rome, Rome - Italy

^[4] Univ Tokyo, Grad Sch Sci, Dept Astron, Tokyo 1130033 - Japan

^[5] Spectral Sci Inc, 4 Fourth Ave, Burlington, MA 01803 - USA

^[6] Univ Chile, Santiago - Chile

^[7] CALTECH, Pasadena, CA 91125 - USA

^[8] Princeton Univ Observ, Peyton Hall, Princeton, NJ 08544 - USA

^[9] Univ La Laguna, Dept Astrofis, E-38206 Tenerife - Spain

^[10] Inst Astrofis Canarias, Tenerife 38200, Canary Islands - Spain

^[11] Jet Prop Lab, Pasadena, CA 91109 - USA

^[12] Univ Oxford, Subdept Astrophys, Denys Wilkinson Bldg, Keble Rd, Oxford OX1 3RH - England

^[13] Sterrewacht, Leiden - Netherlands

^[14] Univ Wisconsin Madison, Dept Astron, 475 Charter St, Madison, WI 53705 - USA

^[15] Pontificia Univ Catolica Chile, Fac Fis, Inst Astrofis, Av Vicuna Mackenna 4860, Santiago 7820436 - Chile

^[16] Pontificia Univ Catolica Chile, Fac Fis, Ctr Astroingn, Av Vicuna Mackenna 4860, Santiago 7820436 - Chile

^[17] NRAO, Charlottesville, VA - USA

^[18] CALTECH, Infrared Proc & Anal Ctr, Pasadena, CA 91125 - USA

^[19] Univ Sao Paulo, Inst Fis, Dept Fis Matemat, Rua Matao 1371, Sao Paulo - Brazil

^[20] Univ Cambridge, Cavendish Lab, Madingley Rd, Cambridge CB3 0HA - England

^[21] European Space Res & Technol Ctr ESA ESTEC, Directorate Sci, Noordwijk - Netherlands

^[22] Univ South Wales, Pontypridd, M Glam - Wales

• Tipo de documento: Artigo Científico
• Fonte: New Astronomy Reviews; v. 80, p. 1-28, FEB 2018.
• Citações Web of Science: 17

Resumo

Anomalous Microwave Emission (AME) is a component of diffuse Galactic radiation observed at frequencies in the range approximate to 10-60 GHz. AME was first detected in 1996 and recognised as an additional component of emission in 1997. Since then, AME has been observed by a range of experiments and in a variety of environments. AME is spatially correlated with far-IR thermal dust emission but cannot be explained by synchrotron or free-free emission mechanisms, and is far in excess of the emission contributed by thermal dust emission with the power-law opacity consistent with the observed emission at sub-mm wavelengths. Polarization observations have shown that AME is very weakly polarized (less than or similar to 1 %). The most natural explanation for AME is rotational emission from ultra-small dust grains ({''}spinning dust{''}), first postulated in 1957. Magnetic dipole radiation from thermal fluctuations in the magnetization of magnetic grain materials may also be contributing to the AME, particularly at higher frequencies (greater than or similar to 50 GHz). AME is also an important foreground for Cosmic Microwave Background analyses. This paper presents a review and the current state-of-play in AME research, which was discussed in an AME workshop held at ESTEC, The Netherlands, June 2016. (AU)

• Processo FAPESP: 15/19936-1 - BINGO: uma sonda ultra-sensitiva de hidrogênio e emissão contínua de rádio para medida do setor escuro do universo
• Beneficiário: Michael William Peel
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores