Researchers at the Oskar Klein Centre have discovered a strongly lensed Type Ia supernova with multiple gravitational images. They will use this source to measure the Hubble Constant which quantifies the current expansion rate of the Universe.
In September 14, 2015 gravitational waves were detected for the first time. A newly VR-funded collaborative research environment at Stockholm University seeks to simulate and optimize searches for the electromagnetic counterparts to gravitational wave events.
Welcome to the newest members of the Oskar Klein Centre : the KTH Theoretical Particle Physics Group!
Astronomers have caught the explosion of a red supergiant star in its earliest stages yet. The light from supernova SN 2013fs reached the Earth on October 6, 2013, from the galaxy NGC 7610, 150 million light-years away.
Dr. Angela Adamo is a young researcher affiliated with the Stockholm University Astronomy department and the Oskar Klein Centre. She has recently been awarded two prestigious grants. The first, a Starting Grant from the Swedish Research Council, provides resources to help junior researchers establish themselves.
Stockholm University and NORDITA host this week an international workshop on axions and dark matter. Axions are hypothetical particles proposed by Frank Wilczek who this year started his appointment as professor at Stockholm University.
As avid readers of this blog, you no doubt remember PoGOLite - a balloon-borne hard X-ray polarisation mission which is part of the Swedish National Space Board national programme for balloon and sounding rocket research at the Esrange Space Centre. After a number of frustrating set-backs (broken balloons, bad weather, ...), the Crab was successfully observed in July 2013 - providing the first measurement of the polarisation of emissions in the 20 - 120 keV energy band. Technical difficulties encountered during the flight meant that the polarisation parameters could only …
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Supernovae are very rare phenomena in the Universe and their transient nature made them difficult to find for a long time. So, it is not surprising that the discovery rate was around two supernovae per month 30 years ago. Today, we are able to find supernovae daily. For example, the
Intermediate Palomar Transient Factory
, in which our group at the Oskar Klein Centre is involved, has discovered almost 3000 supernovae in the last few years. However, these supernovae are all relatively nearby, since the survey is not sensitive … Continue Reading ››
The observations of the first gravitational wave by the Laser Interferometer Gravitational-Wave Observatory (LIGO) captured the attention of the world this February, confirming the existence of gravitational waves as well as further confirming Einstein’s theory of general relativity.
Physicists around the globe are working relentlessly to pin down the nature of dark matter. This enigmatic entity hides itself from our view as it does neither emit nor absorb any radiation. It only reveals itself through its gravitational interaction. With a new analysis of data from NASA’s gamma-ray large area telescope (LAT) on board the Fermi satellite, we have now come closer to test very light dark matter candidates.
Many regard the astrophysical evidence for dark matter as evidence for yet undiscovered fundamental particles. Well-motivated theories suggest that these particles …
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