Opinn fyrirlestur í stjarneðlisfræði: Hermun hins hulda og bjarta alheims á ofurtölvum | Háskóli Íslands Skip to main content

Opinn fyrirlestur í stjarneðlisfræði: Hermun hins hulda og bjarta alheims á ofurtölvum

7. nóvember 2017 16:00 til 17:00

Veröld - Hús Vigdísar


Aðgangur ókeypis

Þriðjudaginn 7. nóvember mun prófessor Volker Springel, forstjóri Max Planck stofnunarinnar í stjarneðlisfræði í Garching í Þýskalandi og forseti kennilega stjarneðlisfræði hópsins hjá Heidelberg stofnuninni í kennilegum fræðum í Heidelberg í Þýskalandi, halda opinn fyrirlestur.

Heiti fyrirlestursins er: Hermun hins hulda og bjarta alheims á ofurtölvum (e. Supercomputer Simulations of the Dark and Luminous Universe).

Fyrirlesturinn mun fara fram á ensku

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Ágrip (EN)

Arguably one of the most surprising discoveries of modern cosmology is that the Universe features a rather strange composition, with unknown dark matter and dark energy components dominating today's energy density.

Numerical simulations have played a pivotal role in demonstrating that this seemingly unlikely scenario gives rise to a remarkably successful theory for structure formation. We now understand in a fair amount of detail how an intricate cosmic web of
structures emerges from the simple initial conditions left behind by the Big Bang.

Nowadays, modern hydrodynamical simulations have become an important tool to study complex dynamics in the baryonic sector, allowing us to follow how hydrogen and helium gases condense out in galaxies, form stars, and populate the predicted dark matter structures.

However, we still struggle to understand basic aspects of the involved processes, such as the regulation of star formation, which appears rather inefficient on a global scale, defying simple theoretical expectations. In this talk, I will review our current understanding of cosmic structure formation and some of the most pressing open questions.

I will also discuss the ongoing quest of using structure formation to constrain the true physical nature of dark matter and dark energy.

Volker Springel