Kumpula Physics Colloquium

Our first colloquium of Fall 2019 is a Special Colloquium on High Performance Computing (HPC) Applications. We are joined by the Minister of Science and Culture, Hanna Kosonen, who will talk about why HPC is so important for Finland. We will also hear from Professors Ilpo Vattulainen, Minna Palmroth, and Kari Rummukainen who will highlight supercomputing applications at the Department of Physics and Helsinki Institute of Physics (HIP).

Finland has made considerable investments in high-performance computing by renewing the capacity within the CSC – IT Center for Science, and by leading the LUMI consortium that will install one of Europe’s largest pre-exascale supercomputers in Kajaani. But who are the scientific users of HPC in Finland? One of the largest users is the University of Helsinki Department of Physics and HIP, having several groups pioneering in modelling physical systems using supercomputers. This Special Colloquium is targeted to highlight supercomputing applications at the Department of Physics and HIP in a generally understandable manner.

Hanna Kosonen has served as a Member of Parliament since 2015, and is currently Minister of Science and Culture and a member of the Centre Party. During her previous term, she served as a member of the Education and Culture Committee among her other parliamentary duties. Kosonen came to politics from a business career spanning more than ten years. She is a World Champion in Ski Orienteering.

Programme
14:00  Opening, Professor Paula Eerola, Vice Rector for Research
14:00  Minister of Science and Culture, Hanna Kosonen: Why is HPC important for Finland?
14:15  Professor Ilpo Vattulainen: Overall Finnish HPC usage, HPC in biophysics
14:30  Professor and Centre of Excellence Director Minna Palmroth: HPC and New Space Economy
14:40  Academy Professor Kari Rummukainen: HPC in particle physics and cosmology
14:50  Questions & Discussion
15:00  Cocktail reception

Welcome!

Our next colloquium will be held on 12th April. The speaker will be Pauline Gagnon,  retired Senior Research Scientist in particle physics from Indiana University and popular science writer.

Pauline Gagnon has conducted most of her research career at CERN, searching for dark matter particles. She has also contributed to the construction of a tracking device for the ATLAS detector.  She is strongly involved in science communication to the general public, and is the author of a popular science book on particle physics: Who Cares about Particle Physics: Making Sense of the Higgs boson, the LHC and CERN. In the recent years, she has been giving numerous public talks about diversity issues in physics.

In her presentation, titled The tragic destiny of Mileva Marić Einstein, she will tell us more about the little-known story of a hidden female figure in physics history.

Here is the abstract of her talk:

Our next colloquium will be held on 8th February. Our next talk is an inaugural lecture by another new professor in our department, Peter Johansson.

Peter is Professor of Astrophysics here in Helsinki. His research interests range from supermassive black holes to galaxy evolution. He recently received an ERC Consolidator Grant to study the dynamics of supermassive black holes in galactic-scale hydrodynamical simulations and estimate their gravitational wave signatures.

In his talk, titled The birth, life and death of astrophysical black holes, he will discuss exactly those topics.

Here is the abstract of his talk:

 

Our first Kumpula Physics colloquium of 2019 will be held on 18th January. The speaker will be Eero Castrén, Academy Professor with the Neuroscience Center of HiLIFE here in Helsinki.  His lab is investigating neuronal growth factors and their effects on brain development and plasticity. They have focused in particular on how neurotrophic factors are regulated by drugs used for the treatment of brain disorders.

In his talk, titled Everything you always wanted to know about the Brain (but did not know whom to ask), he will introduce some of the current ideas around brain function—particularly from the point of view of brain development. Here is his abstract:

We know a lot of details about how neurons function and increasingly about how they work together to make neuronal networks, but we understand very little about how the brain works as a whole. Progress in understanding the brain will need interdisciplinary cooperation between neuroscientists, physicists, computer scientists and philosophers.

After the 30 minute talk, there will be a cocktail reception. Welcome!

Our final colloquium of 2018 will take place on 14th December. Our speaker is physicist and atmospheric scientist Professor Ilona Riipinen from Stockholm University. Her work focuses on understanding the atmospheric processes governing air quality and global climate. She studies various aspects of the atmosphere, in particular mass transfer processes at atmospheric gas-liquid interfaces, focusing on the sources, processing and sinks of ultrafine (less than 100 nm in diameter) aerosol particles. To pin down the effects of aerosols on climate and air quality, the processes governing their concentrations and interactions with clouds need to be understood and represented accurately in large-scale models. The methodologies used range from molecular level simulations to global Earth system modelling.

In her talk, titled How clouds clean the air and influence the climate – and why should you care?, she will tell us a bit about this interesting, and very important work. Here is her abstract:

Clouds are an important component of the Earth’s energy budget. Besides emissions of greenhouse gases, human activities influence the climate through the impacts anthropogenic aerosol particles have on clouds. Understanding the role of aerosols and clouds in the climate system is central for understanding climate sensitivity – i.e. the response of the climate system to different pollutants – and hence designing the actions required for meeting the Paris agreement. In my presentation, I will discuss the future of the Earth’s climate, the role of aerosols and clouds in it, and how it links to the choices we make in our everyday lives.

After the 30 minute talk, there will be a cocktail reception. Welcome!