Tag Archives: Fermi-LAT

Do we see dark matter emission from dwarf spheroidal galaxies?

From a dark matter (DM) hunter’s perspective, this year’s Fermi Symposium was highly anticipated. In the six years since the launch of the Large Area Telescope (LAT), we’ve seen our share of ups and downs. An active community, both in and outside the Fermi Collaboration (FC), works hard to fit dark matter to or explain away every deviation in excess of what we expect from the gamma-ray sky. This year’s gathering got the answer to the latest burning question: do we see dark matter emission from dwarf spheroidal galaxies (dSphs)? … Continue Reading ››

Fermi observations of a GRB questions synchrotron emission based models

The Fermi satellite has given us a completely new view of the extreme events in our Universe. And it keeps getting better. Just as we were testing a new form of data analysis, Fermi captured a record breaking gamma-ray burst and delivered results that are difficult to explain with most popular models.

Gamma-ray bursts are the biggest explosions observed in the Universe, and are among the most distant sources that can be seen. The emission we see is probably sent out when a black hole is born. In this catastrophic event matter is shot out almost at light speed in two narrow jets, and if the jet happens to point towards us we see a bright flash of radiation.

Interview with a new Oskar Klein Fellow

Elena Moretti is the first of the about 300 applicants who was selected to become an Oskar Klein Fellow this year. She comes from a little country-side town, called Cartura, on the south of Padua in Italy where she graduated in physics in 2006. She got her PhD in Trieste where she worked with the AGILE and Fermi experiments on GRBs. She developed a method that was used to calculate the flux upper limits on the GRB emission that was used in both experiments.

One step closer to the mysterious dark matter

Maja Llena Garde is a PhD student in the Cosmology, Astroparticle Physics and String Theory group at the Oskar Klein Centre. She is involved in the Fermi-LAT collaboration together with her supervisor Jan Conrad. The Large Area Telescope (LAT) is a space based imaging high-energy gamma-ray telescope launched in orbit in June 2008.
Their recent paper on Dark Matter has attracted some attention, thus we asked Maja to tell us more about it.

The Fermi symposium 2011: AGNs, pulsars and gamma ray bursts

The results presented at the III Fermi symposium in Rome reflected, in particular, what a magnificent instrument the Fermi LAT is for observing active galactic nuclei and pulsars. The 2 source catalogue 2FGL was presented and will soon be released with 1888 sources. Much attention was given to the blazar 3C454.3 which has been monitored since the launch and has undergone a series of very bright outbursts.