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  • Scientific areas | UnivEarthS
    is only very recently that black holes have acquired the status of astrophysical objects and not just curiosities of the theory of gravitation singularities protected by a horizon whereas the big bang is a naked singularity Indeed black holes seem to be ubiquitous in the Universe they represent the final stage of a star are present in many binary systems but also at the centre of most galaxies such as our own And even though they are rather simple objects from the point of view of gravity their environment is very complex Indeed the understanding of how high energy phenomena recycle energy into their environment and the feedback to large distances of powerful explosions jets and the impact of their companion high energy particles are keys to understanding the emergence of new structures clouds stars galaxies in the Universe All require high precision observations and elaborated modeling We start with the Universe in its largest dimensions The question of the emergence of space popularly known as the big bang is obviously a central one and requires one to study the Universe at its earliest times i e the most distant Universe because of the finiteness of the speed of light The Universe has been transparent to light since about 380 000 years after the big bang This first light is in the present epoch observed in the form of a microwave background the so called cosmic microwave background CMB Investigating times close to the big bang the so called inflation period requires the identification of very tiny details on maps of fluctuations of the CMB those for which G Smoot received the Nobel Prize in 2006 and thus precision measurement methods Another promising approach is the detection of deformations of spacetime known as gravitational waves These waves could have formed immediately after the big bang and would provide the only direct test of the content of the Universe emerging from the big bang Since those early epochs the expansion of the Universe has been decelerating It was discovered in 1998 that the expansion has been accelerating again for the past 4 billion years This is attributed to some new form of energy called dark energy Identifying dark energy has been singled out by both the astrophysics and fundamental physics communities as the priority task of the coming decade It is obviously related to the question of the future of our Universe The research consists in locating the remaining witnesses of these early periods collecting rare field samples and measurements analyzing them with the most exquisite modern techniques of imagery isotope geochemistry mineralogy in extreme pressure and temperature conditions as is beginning to be carried out on cores from Australia and South Africa that date back to 2 7 billion years and more Because we need to go back even further in the past to the first billion years of Earth s history it requires pushing back the resolution limits of many current instruments and also improving our understanding of some

    Original URL path: http://www.univearths.fr/en/scientific-areas (2015-10-10)
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  • Astrophysics of high energy | UnivEarthS
    physics and Geophysics in space From dust to planets Former Interface projects Formation and early evolution of Planetary systems The youth of cosmic rays and their emergence in the interstellar clouds Gamma ray instrumentation development Young team project Experimental geophysics Valorization project Data distribution visualisation and cloud computing PUBLICATIONS EDUCATIONAL Nanosatellite student project IGOsat UnivEarthS JOB OPPORTUNITY Experimental Dark Matter Search Post Doctoral Research Fellow IGOSat internship PhD position Effect of the North South dichotomy on the thermal structure and evolution of Mars Search this site October Mon Tue Wed Thu Fri Sat Sun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Sign in Password forgotten Home OVERVIEW Scientific areas Astrophysics of high energy Astrophysics of high energy Violent phenomena in the Universe are connected to the presence of very compact objects neutron stars or black holes It is only very recently that black holes have acquired the status of astrophysical objects and not just curiosities of the theory of gravitation singularities protected by a horizon whereas the big bang is a naked singularity Indeed black holes

    Original URL path: http://www.univearths.fr/en/node/50 (2015-10-10)
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  • Cosmology and fundamental physics | UnivEarthS
    catastrophic Universe Interface projects Geoparticles Fundamental physics and Geophysics in space From dust to planets Former Interface projects Formation and early evolution of Planetary systems The youth of cosmic rays and their emergence in the interstellar clouds Gamma ray instrumentation development Young team project Experimental geophysics Valorization project Data distribution visualisation and cloud computing PUBLICATIONS EDUCATIONAL Nanosatellite student project IGOsat UnivEarthS JOB OPPORTUNITY Experimental Dark Matter Search Post Doctoral Research Fellow IGOSat internship PhD position Effect of the North South dichotomy on the thermal structure and evolution of Mars Search this site October Mon Tue Wed Thu Fri Sat Sun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Sign in Password forgotten Home OVERVIEW Scientific areas Cosmology and fundamental physics Cosmology and fundamental physics We start with the Universe in its largest dimensions The question of the emergence of space popularly known as the big bang is obviously a central one and requires one to study the Universe at its earliest times i e the most distant Universe because of the finiteness of the speed of light The Universe has been transparent to light since about 380 000 years after the big bang This first light is in the present epoch observed in the form of a microwave background the so called cosmic microwave background CMB Investigating times close to the big bang the so called inflation period requires the identification of very tiny details on maps of fluctuations of the CMB those for which G Smoot received the Nobel Prize in 2006 and thus precision measurement methods Another promising approach is the detection of deformations of spacetime known as gravitational waves These waves could have formed

    Original URL path: http://www.univearths.fr/en/node/51 (2015-10-10)
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  • Earth and environmental sciences | UnivEarthS
    Gamma ray instrumentation development Young team project Experimental geophysics Valorization project Data distribution visualisation and cloud computing PUBLICATIONS EDUCATIONAL Nanosatellite student project IGOsat UnivEarthS JOB OPPORTUNITY Experimental Dark Matter Search Post Doctoral Research Fellow IGOSat internship PhD position Effect of the North South dichotomy on the thermal structure and evolution of Mars Search this site October Mon Tue Wed Thu Fri Sat Sun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Sign in Password forgotten Home OVERVIEW Scientific areas Earth and environmental sciences Earth and environmental sciences The research consists in locating the remaining witnesses of these early periods collecting rare field samples and measurements analyzing them with the most exquisite modern techniques of imagery isotope geochemistry mineralogy in extreme pressure and temperature conditions as is beginning to be carried out on cores from Australia and South Africa that date back to 2 7 billion years and more Because we need to go back even further in the past to the first billion years of Earth s history it requires pushing back the resolution limits of many current instruments and also improving our understanding of some basic physical chemical and even biological principles and producing when needed efficient numerical modeling of massive amounts of data But the Present and the Past are keys to one another and understanding the distant past of the Earth requires even better understanding of the processes which are still currently active on Earth This is for instance the case for active subduction of plates a generator of dangerous powerful earthquakes and volcanoes but also the key operator allowing the formation of granitic crust that is the precursors to continental fragments that generally

    Original URL path: http://www.univearths.fr/en/node/52 (2015-10-10)
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  • Planetary sciences | UnivEarthS
    and early evolution of Planetary systems The youth of cosmic rays and their emergence in the interstellar clouds Gamma ray instrumentation development Young team project Experimental geophysics Valorization project Data distribution visualisation and cloud computing PUBLICATIONS EDUCATIONAL Nanosatellite student project IGOsat UnivEarthS JOB OPPORTUNITY Experimental Dark Matter Search Post Doctoral Research Fellow IGOSat internship PhD position Effect of the North South dichotomy on the thermal structure and evolution of Mars Search this site October Mon Tue Wed Thu Fri Sat Sun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Sign in Password forgotten Home OVERVIEW Scientific areas Planetary sciences Planetary sciences The formation of planets in particular the Earth and the Moon through the process of accretion and proto planetary impacts controls their chemical state and thus their present dynamics The understanding of the emergence of planets from the pristine solar disk relies on detailed observations of remote solar systems with different degrees of maturation in particular the observation of exoplanets and on high resolution isotopic measurements of the composition of chondrites the initial building blocks of planets This is where the world views and approaches of the astro and geo sciences meet The accretion of the Earth forming objects the Moon forming impact the nature and duration of a magma ocean the formation of the Earth s core the appearance of the Earth s magnetic field early mantle convection and the emergence of the first oceans atmosphere and continental fragments the effect of the late heavy bombardment the emergence of life the growth of the inner core the birth of plate tectonics are all key events in the history of the young Earth occurring in the

    Original URL path: http://www.univearths.fr/en/node/53 (2015-10-10)
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  • Component | UnivEarthS
    Bursts as Multi messengers Advanced time series analysis Former Exploratory projects Formation of dunes and climate on Titan Impact of black holes on their environment Frontier projects Earth as a living planet From the Big Bang to the future Universe Support au PCCP The transient catastrophic Universe Interface projects Geoparticles Fundamental physics and Geophysics in space From dust to planets Former Interface projects Formation and early evolution of Planetary systems The youth of cosmic rays and their emergence in the interstellar clouds Gamma ray instrumentation development Young team project Experimental geophysics Valorization project Data distribution visualisation and cloud computing PUBLICATIONS EDUCATIONAL Nanosatellite student project IGOsat UnivEarthS JOB OPPORTUNITY Experimental Dark Matter Search Post Doctoral Research Fellow IGOSat internship PhD position Effect of the North South dichotomy on the thermal structure and evolution of Mars Search this site October Mon Tue Wed Thu Fri Sat Sun 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Sign in Password forgotten Home OVERVIEW Component Component Supervising institution Partners PRES Sorbonne Paris Cité Université Paris Diderot Institut de Physique du Globe de

    Original URL path: http://www.univearths.fr/en/component (2015-10-10)
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  • Supervising institution | UnivEarthS
    physics and Geophysics in space From dust to planets Former Interface projects Formation and early evolution of Planetary systems The youth of cosmic rays and their emergence in the interstellar clouds Gamma ray instrumentation development Young team project Experimental geophysics Valorization project Data distribution visualisation and cloud computing PUBLICATIONS EDUCATIONAL Nanosatellite student project IGOsat UnivEarthS JOB OPPORTUNITY Experimental Dark Matter Search Post Doctoral Research Fellow IGOSat internship PhD position Effect

    Original URL path: http://www.univearths.fr/en/supervising-institution (2015-10-10)
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  • Partners | UnivEarthS
    The transient catastrophic Universe Interface projects Geoparticles Fundamental physics and Geophysics in space From dust to planets Former Interface projects Formation and early evolution of Planetary systems The youth of cosmic rays and their emergence in the interstellar clouds Gamma ray instrumentation development Young team project Experimental geophysics Valorization project Data distribution visualisation and cloud computing PUBLICATIONS EDUCATIONAL Nanosatellite student project IGOsat UnivEarthS JOB OPPORTUNITY Experimental Dark Matter Search Post

    Original URL path: http://www.univearths.fr/en/partners (2015-10-10)
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