Osservare il passato remoto dell'Universo
INFN LNF - Laboratori Nazionali di Frascati
99,058 views
It is possible to observe regions of the universe so distant that we see them as they were billions of years ago. Using the cosmic microwave background, it is possible to observe the universe as it was 13.7 billion years ago, and 380,000 years after the Big Bang, when the universe was a glowing plasma 1 billion times larger than today, at a temperature 1,000 times higher than today.
These measurements provide information on the physics of the early universe, its evolution, and the large-scale composition and geometry of the universe.
The paper describes the scientific challenges and the physics methodologies used for this type of research. Finally, it describes experiments that attempt to observe physical phenomena that occurred even more remotely, just moments after the Big Bang, using the polarization state of the cosmic microwave background. This is what the recent BICEP2 and Planck experiments are doing, and their results are briefly discussed.
Paolo De Bernardis:
Receiving his PhD in 1987, Paolo De Bernardis has been an Associate Professor at Sapienza University of Rome since November 2001. He has been a Full Professor since 2004.
His fields of activity are Experimental Astrophysics and Cosmology, and in particular the study of the cosmic microwave background radiation using stratospheric balloon experiments.
He is the Italian Principal Investigator of the international BOOMERanG stratospheric balloon experiment on the anisotropy and polarization of the cosmic microwave background radiation. He has received several awards, including the Antonio Feltrinelli Prize from the Accademia Nazionale dei Lincei in 2001, the Targa Piazzi from the INAF/MIUR in 2002, the Dan David Prize together with Andrew Lange and Paul Richards in 2009, and the Giuseppe and Vanna Cocconi Prize for Particle Astrophysics and Cosmology (European Physical Society) in 2011 together with Paul Richards.
He was the Italian coordinator of the international Archeops and MAXIMA experiments on cosmic microwave background radiation.
Since 2007, he has been a corresponding member of the Accademia Nazionale dei Lincei.
Physics Meetings - October 8, 2014
Speaker: Paolo De Bernardis
Website: https://www.lnf.infn.it/edu/incontri/...
Slides: https://www.lnf.infn.it/edu/incontri/...
Other videos available at: https://accendiscienza.lnf.infn.it
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Osservare il passato remoto dell'Universo
INFN LNF - Laboratori Nazionali di Frascati
99,058 views
It is possible to observe regions of the universe so distant that we see them as they were billions of years ago. Using the cosmic microwave background, it is possible to observe the universe as it was 13.7 billion years ago, and 380,000 years after the Big Bang, when the universe was a glowing plasma 1 billion times larger than today, at a temperature 1,000 times higher than today.
These measurements provide information on the physics of the early universe, its evolution, and the large-scale composition and geometry of the universe.
The paper describes the scientific challenges and the physics methodologies used for this type of research. Finally, it describes experiments that attempt to observe physical phenomena that occurred even more remotely, just moments after the Big Bang, using the polarization state of the cosmic microwave background. This is what the recent BICEP2 and Planck experiments are doing, and their results are briefly discussed.
Paolo De Bernardis:
Receiving his PhD in 1987, Paolo De Bernardis has been an Associate Professor at Sapienza University of Rome since November 2001. He has been a Full Professor since 2004.
His fields of activity are Experimental Astrophysics and Cosmology, and in particular the study of the cosmic microwave background radiation using stratospheric balloon experiments.
He is the Italian Principal Investigator of the international BOOMERanG stratospheric balloon experiment on the anisotropy and polarization of the cosmic microwave background radiation. He has received several awards, including the Antonio Feltrinelli Prize from the Accademia Nazionale dei Lincei in 2001, the Targa Piazzi from the INAF/MIUR in 2002, the Dan David Prize together with Andrew Lange and Paul Richards in 2009, and the Giuseppe and Vanna Cocconi Prize for Particle Astrophysics and Cosmology (European Physical Society) in 2011 together with Paul Richards.
He was the Italian coordinator of the international Archeops and MAXIMA experiments on cosmic microwave background radiation.
Since 2007, he has been a corresponding member of the Accademia Nazionale dei Lincei.
Physics Meetings - October 8, 2014
Speaker: Paolo De Bernardis
Website: https://www.lnf.infn.it/edu/incontri/...
Slides: https://www.lnf.infn.it/edu/incontri/...
Other videos available at: https://accendiscienza.lnf.infn.it