Mini Black Holes in the Atmosphere?
April 2021 Before the biggest proton accelerator on Earth – the Large Hadron Collider (LHC) at CERN – was activated, scientists speculated that the particle collisions may lead to the creation of tiny black…
30 Doradus C -The high-energy superbubble
March 2021 If you ever find yourself star-gazing in a very dark place in the southern Hemisphere (like at the H.E.S.S. telescope site in Namibia!), try to look for the Large Magellanic Cloud; it…
Striking a Jet -and Pinpointing the Flame
February 2021 When striking a match – rubbing the flammable head [of the match] past a rough surface – it ignites in a flash and lights up. In very general terms something similar happens…
Dark matter in Irregular galaxy “WLM”
January 2021 For many decades now scientists have been searching for a new form of matter, which is believed to be ubiquitous in the Universe from cosmological to galactic scales. This invisible form of…
The bright extreme BL Lac object HESS J1958-301
December 2020 Many active galactic nuclei (AGN) harbour powerful cosmic particle accelerators. Charged particles, such as protons and electrons, acquire very high energies in these natural accelerators, whose efficiency vastly outperforms the most powerful…
The Black Hole in the Galactic Centre
November 2020 On October 6th 2020 the Royal Swedish Academy of Sciences has decided to award the Nobel Prize in Physics 2020 with one half to Roger Penrose “for the discovery that black hole…
A new camera on the large telescope of H.E.S.S.
October 2020 Together with the continuation of H.E.S.S. operations into an extension phase starting October 2019, the H.E.S.S. collaboration has upgraded its 600 square metre Cherenkov telescope CT5 with a new high-performance camera with…
20th anniversary of H.E.S.S. groundbreaking
September 2020 The H.E.S.S. experiment is the biggest and longest-operating among all currently active facilities in ground-based gamma-ray astronomy, exploring the Very High Energy (VHE) radiation from the Universe. The collaboration that planned, built…
MAXI J1820+070: A powerful outburst launching superluminal jets in a Black Hole Binary
August 2020 MAXI J1820+070 is a Black Hole Binary (BHB) system consisting of a black hole with an estimated mass of 7-8 solar masses [1] and a companion star of less than one solar…
The kiloparsec-sized VHE gamma-ray emission of Centaurus A
July 2020 During the last decades the universe has been probed in the light of very high energy (VHE) gamma-rays, identifying many different kinds of Galactic sources, distant Quasars and other active galaxies. Curiously,…