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Black hole feedback in the luminous quasar PDS 456

Harrison, F. A.; Stern, D.; Behar, E. +17 more

The evolution of galaxies is connected to the growth of supermassive black holes in their centers. During the quasar phase, a huge luminosity is released as matter falls onto the black hole, and radiation-driven winds can transfer most of this energy back to the host galaxy. Over five different epochs, we detected the signatures of a nearly spheri…

The exceptionally powerful TeV γ-ray emitters in the Large Magellanic Cloud

Klochkov, D.; Santangelo, A.; Quirrenbach, A. +226 more

The Large Magellanic Cloud, a satellite galaxy of the Milky Way, has been observed with the High Energy Stereoscopic System (H.E.S.S.) above an energy of 100 billion electron volts for a deep exposure of 210 hours. Three sources of different types were detected: the pulsar wind nebula of the most energetic pulsar known, N 157B; the radio-loud supe…