Recent research highlights
Very-high-energy gamma-ray emission deep in a γ-ray burst afterglow
After decades of searches, in 2019 three gamma-ray bursts detections were announced from ground-based very high energy gamma-ray telescopes. Two of these bursts were detected with H.E.S.S. and the first was recently published in Nature. The detection is remarkable not just for the photon energies observed but because it occurred ten hours after the initial burst, providing important constraints on our understanding of these cosmic explosions. See press release (English, German).
Special issue of the journal “Astronomy & Astrophysics” dedicated to H.E.S.S.
A&A Issue 612 in April 2018 was devoted entirely to “H.E.S.S. phase-I observations of the plane of the Milky Way”. MPIK group members played in important role in many of the articles of the special issue and in particular the Survey of the Galactic Plane. See press release (English, German) and Galactic Plane Survey figures and data.
Most sensitive search for the neutrinoless double beta decay with GERDA Phase II
For the first time the sensitivity for the search of this decay surpassed 1026 years. The result was published in Science September 2019. Motivation for the search is the question if neutrinos are identical with their antiparticles: a property that could boost our understanding of the matter-antimatter asymmetry of the universe.
Very-high-energy particle acceleration powered by the jets of the microquasar SS 433
Published in the journal Nature in October 2018 ( arXiv) this result from HAWC proves that particles can be accelerated to close to PeV (1015 electronvolts) energies in the jets of the accreting binary star systems known as microquasars.