Tag Archives: PhD students

And the ATLAS Thesis Award 2011 goes to Christian Ohm!

Christian Ohm in the control rum at Cern during the LHC startup
Only five of the about 100 PhD students who graduated in 2011 received the ATLAS Thesis Award 2011, and we are very proud to know that Christian Ohm, PhD student at the Oskar Klein Centre is one of them. The other winners are Michael Hance, David Lopez Mateos, David Miller and Verena Martinez Outschoorn.
“It is very exciting!” tells me a radiant Christian when he joins me in my office “if you think that the other four are all Americans, and I am the only European! And they come from places like Harvard, Caltech and Berkeley!”
The five winners were selected by the CB Chair Advisory Committee, which acted as the Thesis Awards Committee, from a selection of 21 nominations received.

My thesis centers around two searches for beyond Standard Model (SM) physics but contains published work of technical nature as well. The two physics analyses I contributed to are both a signature-driven searches for new physics giving rise to so-far unobserved massive long-lived particles. The ATLAS experiment was built primarily to directly detect SM particles, and most searches for new physics rely on the assumption that new states produced in the pp collisions will decay promptly and leave SM particles detectable in the final state. Many extensions of the SM feature new particles with decay lengths on the scale of modern collider experiments, and these two analyses instead search for new physics based on direct detection. Christian explains.
Continue reading And the ATLAS Thesis Award 2011 goes to Christian Ohm!

Time for PhD thesis defenses at the Oskar Klein Center

This spring there have been several PhD theses defenses here at the Oskar Klein Center, and as much as we hate saying good bye to some of our best students, we are proud to have been part of their professional lives.
The first to go was Jakob Nordin who defended his thesis with the title “Spectral Properties of Type Ia Supernovae and Implications for Cosmology” the 27th May 2011. During his PhD under the guidance of Professor Ariel Goobar, Jakob collected spectroscopic data of Type Ia supernovae with the purpose to study if SNIa are indeed good “standard candles” over a wide redshift range, a necessary condition to use these explosions to study the properties of dark energy. He has also investigated the nature of one of the color-brightness relation, one of the largest astrophysical corrections in the use of SNIa to measure distances. Finally, he has written a Monte-Carlo simulation package to investigate how systematic uncertainties in the use of Type Ia SNe as distance indicators propagate into our cosmological fits of dark energy parameters. Jakob is now ready to move on with a postdoc at the Berkeley, and we really wish him good luck with his life in California!

Another of Ariel Goobar students, Teresa Riehm also student at the Astronomy department, defended her thesis “Investigating the Dark Universe through Gravitational Lensing”. Continue reading Time for PhD thesis defenses at the Oskar Klein Center