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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

Displaying all lectures given by: Eiichiro Komatsu


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Bullet Cluster: A Challenge to Lambda-CDM Cosmology
Speaker(s): Eiichiro Komatsu
Abstract: We show that the existence of the bullet cluster, 1E0657-56, is incompatible with the prediction of the standard Lambda CDM cosmology. The probability of finding the large infall velocity (3000 km/s) necessary for explaining the X-ray and weak lensing data of 1E0657-56 is between 3.3x10^{-11} ... read more
Date: 29/04/2010 - 11:00 am

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The 7-year WMAP Observations: Cosmological Interpretation
Speaker(s): Eiichiro Komatsu
Abstract: We have announced the results from 7 years of observations of the Wilkinson Microwave Anisotropy Probe (WMAP) on January 26. In this talk we will present the cosmological interpretation of the WMAP 7-year data, including the detection of primordial helium, images of polarization of microwave backgro... read more
Date: 27/04/2010 - 2:00 pm
Series: Cosmology

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The Sunyaev-Zel'dovich effect as a probe of violent cluster mergers
Speaker(s): Eiichiro Komatsu
Abstract: In 2001 we made an unexpected discovery of a very bright SZ spot toward the X-ray luminous cluster RXJ1347-1145, which was significantly displaced from the center of the cluster's gravitational potential. One of the possible interpretations is that this spot is a signature of a violent merger in thi... read more
Date: 29/04/2009 - 11:45 am

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WMAP 5-year Results: Measurement of f_NL
Speaker(s): Eiichiro Komatsu
Abstract:
Date: 08/03/2008 - 3:00 pm

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WMAP 5-year Results: Implications for Inflation
Speaker(s): Eiichiro Komatsu
Abstract:
Date: 06/03/2008 - 9:30 am
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