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Gamma-ray astronomy covers a huge range of physical phenomena, from complex interactions in the galactic disk to particle acceleration in supermassive blackhole jets from distant galaxies. Being neutral and thus unaffected by magnetic fields, gamma rays provide us with the best tool for probing particle acceleration sites in the universe, the mechanisms of which are still under debate. In this talk, we will first look at the high energy radiation mechanisms in blazar jets, studied in a multiwavelength context. We will then shift to TeV TeV studies of faint galactic sources with complex morphologies, detected with novel analysis techniques using the H.E.S.S. telescope array, especially the discovery of a new pulsar wind nebula candidate (PSRJ1413-6205), and the first detection of passive molecular clouds at very high energies. The detection of one of the faintest supernovas (G312.04) at GeV energiessing Fermi-LAT will also be discussed. A study of these sources allows us to probe acceleration, diffusion, and escape of cosmic rays in our Galaxy. Moreover, with the advent of the CTA Telescope, it has become increasingly evident that TeV data analysis needs to be open for the general community, allowing multi-wavelength and multi-instrument data fitting and modelling. To facilitate this, the GammaAstroDataFormats proposed a common data model for different instruments, which can be analysed using Gammapy. Gammapy, an open source python package, is the CTA Science tools, and is also used within H.E.S.S. , MAGIC, VERITAS, HAWC and SWGO collaborations. Starting at event lists and instrument response functions, Gammapy provides functionalities for data reduction and fitting to create high level science products like Flux Points and Light Curves. Development of the Gammapy package and capabilities and future plans for including neutrino detectors and particle arrays into the analysis scheme will be discussed.
Dean's Office