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Le 7 juillet 2017 De 10h30 à 12h00 George Younes George Washington University Magnetars represent the most extreme manifestation of the neutron star population. Their seconds-long rotational periods and large spindown rates imply surface dipole magnetic fields up to 7.0E14 G,...
Le 30 juin 2017 De 10h30 à 12h00 Martin FEIX IAP Spatial modulations in the observed galaxy luminosity distribution (derived from redshifts as distance proxies) trace the radial peculiar velocity field. Using spectroscopic redshift surveys, this signal can be statistically...
Le 16 juin 2017 De 10h30 à 12h00 Sue Madden CEA The interstellar medium (ISM) of galaxies harbors the reservoir of metals deposited over the history of star formation of a galaxy and contains the imprint of the astrophysical processes governing a galaxy's evolution....
Le 22 mai 2017 De 14h00 à 15h30 Christian Wolf ANU The SkyMapper Southern Survey is now approaching its first large data release, covering nearly all of the Southern hemisphere in six optical bands. This talk will cover all aspects of the project, from its history and...
Le 19 mai 2017 De 10h30 à 12h00 Ulrich Geppert University of Zielona Góra, Poland For neutron stars to emit radio waves, certain conditions must be met on their polar cap. I will shortly introduce them and present the model of the partially screened gap in which the charges...
Le 12 mai 2017 De 10h30 à 12h00 Federico Lelli ESO Garching The formation and evolution of low-mass galaxies remain poorly understood. It is still unclear what physical processes are driving the star formation in these low-density systems and what are the actual effects of...
Le 5 mai 2017 De 10h30 à 12h00 Guillaume Fruet IPHC The knowledge of thermonuclear reaction rates is crucial to understand the energy production and nucleosynthesis in stars. One of the key reactions in the nucleosynthesis process is the 12C+12C fusion, which acts as a...
Le 21 avril 2017 De 10h30 à 12h00 Gene Magnier IfA Hawaii Pan-STARRS and Gaia both had their Data Release 1 in the latter half of 2016. With photometry and astrometry of roughly 3 billion astronomical objects, the Pan-STARRS DR1 has substantial overlap with Gaia, but...
Le 7 avril 2017 De 10h30 à 12h00 Mark Lovell MPIA Heidelberg It is well known that the number of Local Group galaxies is much smaller than the number density of dark matter haloes predicted by N-body cold dark matter simulations, and these same simulations often predict...
Le 31 mars 2017 De 10h30 à 12h00 Flavien Kiefer IAP Le jeune système planétaire entourant Beta Pictoris contient de nombreux petits corps actifs. Les observations spectroscopiques de cette étoile révèlent en effet un taux élevé de transits de petits corps en...