Bulletin of the American Physical Society
2007 APS April Meeting
Volume 52, Number 3
Saturday–Tuesday, April 14–17, 2007; Jacksonville, Florida
Session J5: Nobel Prize Symposium |
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Sponsoring Units: APS Chair: Leo Kadanoff, University of Chicago, APS President Room: Hyatt Regency Jacksonville Riverfront Grand 6 |
Sunday, April 15, 2007 10:30AM - 11:06AM |
J5.00001: From the Big Bang to the Nobel Prize Invited Speaker: The Cosmic Background Explorer (COBE) satellite, proposed in 1974 and launched by NASA in 1989, measured the cosmic microwave and infrared background radiation from the Big Bang and everything that happened later. The COBE team made three key measurements: the spectrum of the cosmic microwave background radiation (CMBR) matches a blackbody within 50 ppm (rms), the CMBR is anisotropic, with 10 ppm variations on a 7$^{o}$ angular scale, and the cosmic infrared background from previously unknown objects is as bright as all the known classes of galaxies. The first measurement confirmed the Hot Big Bang theory with unprecedented accuracy, the second is interpreted as representing quantum mechanical fluctuations in the primordial soup and the seeds of cosmic structure and the basis for the existence of galaxies, and the third is still not fully understood. I will describe the project history, the team members, the hardware and data processing, the major results, and their implications for science, and end with the outlook for future progress with new background measurements and large telescopes. [Preview Abstract] |
Sunday, April 15, 2007 11:06AM - 11:42AM |
J5.00002: Cosmic Microwave Background Radiation Anisotropies: their Discovery and Utilization Invited Speaker: This talk concentrates on the the Cosmic Microwave Background (CMB) radiation and the role that the observations of CMB anisotropies has played in making Cosmology a modern and precise science. CMB anisotropy along with other observations have led us to a standard model of cosmology that is both calculable and testable and has survived its first comparisons of theory and observations well. We soon expect the observations and theory to improve to the point that we have precise determinations of the key cosmological parameters and at the same time provide serious tests of the underlying physics. [Preview Abstract] |
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