Conveners
Invited Plenary Talks: Session 1
- Pierluca Carenza (Stockholm University)
Invited Plenary Talks: Session 2
- Joel Pearson Johansson (Stockholm University)
Invited Plenary Talks: Session 5
- Benjamin Wallisch (Stockholm University)
Invited Plenary Talks: Session 7
- Milena Crnogorcevic (Stockholm University)
Invited Plenary Talks: Session 8
- Metin Ata (Stockholm University)
Invited Plenary Talks: Session 9
- Joshua Eby (Stockholm University)
Invited Plenary Talks: Session 10
- Axel Widmark (Stockholm University)
The interactions of the gravitational metric with other spin-2 fields are strongly constrained by the absence of the so called ghost instabilities in the theory. Although the study of such ghost free interactions are well motivated theoretically, their construction and even the question of their existence have been long standing problems. I will motivate the study of such theories and then...
One of the most remarkable possibilities of General Relativity concerns gravitational collapse to black holes, leaving behind a geometry with light rings, ergoregions and horizons. These peculiarities are responsible for uniqueness properties and energy extraction mechanisms that turn black holes into ideal laboratories of strong gravity, of particle physics (yes!) and of possible...
Neutron star mergers are related to a large number of (astro-)physical questions. For example, they had long been suspected to produce gravitational waves, gamma ray bursts and -by some- to produce heavy "rapid neutron capture" elements. While overall convincing, all these conjectures were only based on indirect, often theoretical arguments and none was proven by direct observations. The...
Traditional numerical simulations employing gravitational softening are unable to resolve the small-scale dynamics and gravitational wave emission from supermassive black hole binaries. Instead, the parsec-scale dynamics is typically modelled by postprocessing the simulations using either semi-analytic methods based on orbit-averaged equations or by resimulating the core regions of the merged...
Detailed measurements of the cosmic microwave background during the last three decades have revolutionized our understanding of the Big Bang and the evolution of structure in the universe. These advances have been made possible through a close collaboration between instrumentalists, theorists and data analysts. As the signal-to-noise ratio of available data increases, it becomes more and more...
Cunning instrument design is at the core of most successful endeavors in experimental physics. In this talk, I will describe hardware efforts at the OKC motivated by our desire to address fundamental questions in cosmology and astroparticle physics. The talk will cover some of the fun (and not-so-fun) challenges associated with designing tunable plasmonic resonators and broadband absorbers for...
Historically the most popular dark matter candidates have been new elementary particles, such as WIMPs and axions. However Primordial Black Holes (PBHs), black holes formed from over-densities in the early Universe, are another possibility. The discovery of gravitational waves from mergers of ~10 Solar mass black hole binaries by LIGO-Virgo has generated a surge in interest in PBH dark matter....
The talk will cover some of the lessons we learned from 15 years of the observations of the Fermi LAT satellite and what we hope to learn with the upcoming Cherenkov Telescope array.
Advanced data analysis and machine learning techniques are increasingly required to optimally exploit large experimental or observational data sets to answer fundamental physics, astrophysics, and cosmology research questions. In recent years, OKC members' coherent efforts have created a thriving community of computational physicists and data analysts, culminating in the recent establishment...
