Événements

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Du 21 janvier 2022 au 21 janvier 2022

Séminaire – Gauri Sharma (University of Western Cape)

Observational Evidence of Evolving Dark Matter Halos with cosmic time Abstract In the late 1970s, Vera Rubin showed that flat rotation curves are ubiquitous in local Star-forming Galaxies (SFGs) and concluded that “galaxies are surrounded by an invisible matter, the so-called dark matter...

Du 7 janvier 2022 au 7 janvier 2022

Séminaire – Alain Blanchard (IRAP)

Is there a tension on the amplitude of matter fluctuations in the LCDM model? Abstract The results of the eBOSS survey provide the best current measurements of the properties of the distribution of galaxies, constituting the summary of a long-term SDSS effort. Among those, the amplitude of...

Du 17 décembre 2021 au 17 décembre 2021

Séminaire – Esra Bulbul (MPE Garching)

eROSITA's First View on Hot Baryons of the Universe Abstract Successfully launched in July 2019, eROSITA, the German-built telescope array operating between 0.2-8 keV on board the Russian-German Spectrum-RG (SRG) mission, provides a unique imaging, spectroscopic, and timing capability. By...

Du 10 décembre 2021 au 10 décembre 2021

Séminaire – Max Grönke (MPA)

The challenge of modeling turbulent, multiphase gas Abstract Astrophysical systems, such as the interstellar, intracluster medium, or the circumgalactic medium, are usually multiphase with a colder phase embedded in a volume filling hot environment. Although ubiquitous, multiphase gas is...

Du 3 décembre 2021 au 3 décembre 2021

Séminaire – Alexis Coleiro (APC)

Multimessenger astronomy with neutrinos : what have we learned so far ? Abstract The recent detection of high-energy astrophysical neutrinos and gravitational waves open a new era in multimessenger astronomy. Exploring high-energy sources with these new messengers and electromagnetic...

Du 26 novembre 2021 au 26 novembre 2021

Séminaire – Gregory Green (MPIA Heidelberg)

What can auto-differentiation do for you? Applications of machine-learning tools to stars, dynamics and dust Abstract Machine learning has found increasing use in astronomy over the last few years. In this talk, instead of discussing machine learning itself, I will discuss how a mathematical...

Du 19 novembre 2021 au 19 novembre 2021

Séminaire – Katarina Kraljic (LAM)

Galaxy evolution in the metric of the cosmic web Abstract The matter distribution in the Universe follows a spectacular web-like structure consisting of voids, walls, filaments and nodes, naturally defining the environment in which galaxies form and evolve across cosmic time. That certain...

Du 12 novembre 2021 au 12 novembre 2021

Séminaire – Riccardo Ferrazzoli (INAF/IAPS)

X-ray polarimetry with IXPE Abstract Polarimetry in the X-ray band would help us answer many open questions on the nature of emission processes and geometry in many celestial sources. However, the field of X-ray polarimetry has been dormant for decades, with only one object, the Crab Nebula,...

Du 5 novembre 2021 au 5 novembre 2021

Séminaire – Antoine Grandjean (Unistra)

A statistical study on young giant planets from radial velocity surveys  Abstract The study of the close to 5000 exoplanets and brown dwarfs companions known to date has evidenced the importance of early evolution stages of planet formation processes. Yet, a better understanding of...

Du 22 février 2022 au 4 mars 2022

Deuxième école ESCAPE sur l’Observatoire Virtuel

Le projet ESCAPE organise sa deuxième école internationale sur l'Observatoire Virtuel sous la forme d'une réunion hybride à l'Observatoire Astronomique de Strasbourg, et en ligne dans Zoom. L'école aura lieu du 22 au 24 février 2022 et le 04 mars 2022. L'Observatoire Virtuel (OV) ouvre...