An international scientific team including two co-Investigators from the IAS has determined the elemental composition of the dust of 67P/Churyumov-Gerasimenko, the comet explored by the European space probe Rosetta. Their results reveal some of the most carbon-rich materials and the least altered ever explored. This cometary carbon is essentially in a macromolecular organic structure, meaning that it is mainly in that form that it was delivered by comets to the primitive Earth.
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Yves Langevin, Research Director Emeritus of Outstanding Class, has been awarded the Runcorn-Florensky Medal from EGU (European Geosciences Union). This medal is awarded to scientists for their outstanding contribution to planetology. It has been given four times only over the past 15 years.
IAS is participating to the national open lab day "Fête de la Science" in the week of October 9th. After visits by high school students, the laboratory will be open for the general public on Sunday October 15th, from 2 to 6PM.
How do galaxies form? Where is dark matter hidden? What is the nature of dark energy? The mysteries of the universe constantly question humanity. Astrophysics unveils many of them, but many questions remain. These points are addressed in a mainstream book that was released on September 27th.
The European Solar Physics Division Prize Committee has awarded its 2017 PhD Thesis Prize to Clara Froment, in recognition of her Thesis on the coronal heating problem and study of the physical nature of long-period pulsations in coronal loops, which was undertaken at the IAS. The ceremony took place during the 15th European Solar Physics Meeting in Budapest on September 7, 2017.
The enormous quantity and complexity of planetary data acquired by spacecraft during the last two decades has created a demand within the planetary community for access to the raw and high level data archives and to the tools necessary to analyze these data. The number and the size of the datasets are so large that an information system to process, manage and distribute data is critical. In this framework, the Observatories of Paris Sud (OSUPS) and Lyon (OSUL) have recently developed a portal, called PSUP (Planetary SUrface Portal), to provide users with efficient and easy access to these data products.
Former Ph.D. candidate at IAS, Jean-Baptiste Durrive has been selected as a Springer Thesis Award recipient for his doctoral thesis, defended the 13 October 2016. His manuscript, Baryonic Processes in the Large-Scale Structuring of the Universe, concerns two fundamental aspects of the evolution of the intergalactic gas, from the Epoch of Reionization until the present day Universe: the emergence of magnetic fields on cosmological scales, and the fragmentation of matter in the sheets and filaments of the cosmic web. His thesis has just been published in the Springer Theses collection. Congratulations Jean-Baptiste!
Scientists using data from the GOLF instrument onboard the ESA/NASA SOHO solar observatory have found long-sought gravity modes of seismic vibration that imply the Sun's core is rotating four times faster than its surface. IAS is Principal Investigator of the GOLF instrument and has participated to this study.
PLATO - Planetary Transits and Oscillations of stars - was adopted during a meeting of ESA’s Science Programme Committee held on June 20, 2017. This means that the mission can now move from the blueprint to construction stage. In the coming months industry will be asked to bid to supply the spacecraft platform.
For the first time, scientists have explored the magnetic field in the upper solar atmosphere by observing the polarization of ultraviolet light from the Sun. They accomplished this by analyzing data taken by the CLASP sounding rocket experiment during its 5-minute flight in space on September 3, 2015. Now that ultraviolet spectropolarimetry, the method used in the CLASP project, has been proven to work, it can be used in future investigations of the magnetic fields in the upper chromosphere and the transition region to better understand activity in the solar atmosphere.