Tuorla observatory seminar series

Tuorla seminars in spring 2017

Seminars will be streamed online unless otherwise informed. No registration required and the weblink is given later in the announcement of the seminar. The connection starts sligthly before the seminar. 

After the seminar you can ask questions by using the chat window in the ADOBE CONNECT interface. We hope to recieve a lot of questions!

The seminars are held on Thursdays at 14.30 unless otherwise noticed. The title of the talk will be added as the seminar approaches.

18.5 Till Sawala (University of Helsinki): Have we solved the Local Group's Cosmic Puzzles?


Abstract:
The dwarf galaxies of the Local Group represent some of the most discriminating tests of structure formation on small scales, and of the Lambda-CDM cosmological model and its alternatives. Based on results from the APOSTLE suite of cosmological hydrodynamic simulations of the Local Group, I will discuss how the impact of baryonic physics affects the relation between the observed galaxies and the underlying dark matter structures. In particular, I will argue that many of the apparent small-scale failures of Lambda-CDM can be resolved when processes including supernova feedback and reionisation are taken into account, resulting in a Local Group dwarf galaxy population that matches the observed one. I will also discuss predictions for the dark matter substructures that surround the Milky Way.



Coming:
25.05 no talk (Ascension Day)
01.06 Jochen Heidt (Heidelberg)
08.06 Lauri Pesonen (Helsinki) - The Great Impact Hunt in Fennoscandia - new results, remaining questions

 
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