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Investigating the Early Universe with the Cosmic Microwave Background Anisotropy

de Bernardis, P., Ade, Peter A. R., Bock, J. J., Bond, J. R., Borril, J., Boscaleri, A., Coble, K., Contaldi, C. R., Crill, B. P., de Troia, G., Ferreira, P., Ganga, K., Giacometti, M., Hivon, E., Hristov, V. V., Iacoangeli, A., Jaffe, A. H., Jones, W. C., Lange, A. E., Martinis, L., Masi, S., Mason, P., Mauskopf, Philip Daniel, Melchiorri, A., Montroy, T., Nati, F., Netterfield, C. B., Pascale, E., Piacentini, F., Pogosyan, D., Polenta, G., Pongetti, F., Prunet, S., Romeo, G., Ruhl, J. E. and Scaramuzzi, F. 2003. Investigating the Early Universe with the Cosmic Microwave Background Anisotropy. Memorie della Societa Astronomica Italiana 74 (1) , pp. 75-84.

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Several experiments (including BOOMERanG, MAXIMA, DASI, VSA, CBI) have recently detected very low contrast structures in the Cosmic Microwave Background (CMB), the otherwise isotropic radiation coming from the early Universe. These structures have a contrast of the order of 25 ppm and a dominant angular size of one degree. In the current cosmological model, these structures result from acoustic oscillations of the primeval plasma within the horizon at recombination (z » 1100). In the framework of the Hot Big Bang theory with the inflationary hypothesis, the statistical properties of the image of the CMB allow us to measure most of the cosmological parameters.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Uncontrolled Keywords: Cosmology – Cosmic Microwave Background
Publisher: Italian Astronomical Society
ISSN: 0037-8720
Related URLs:
Last Modified: 23 Jan 2020 03:54

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