12-20 July 2017
Asia/Seoul timezone
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BEXCO - Room E(106/107)

[GA307] Advanced search for the extension of unresolved TeV sources with H.E.S.S.


  • Markus HOLLER

Primary authors



The resolution power of current Imaging Atmospheric Cherenkov Telescopes is presently restricted to scales of a few arcmin. Measuring the extension of VHE sources is limited by the uncertainties in the characterisation of the instrument Point Spread Function (PSF), which varies strongly with observation and instrument conditions. Employing newly developed simulation and analysis techniques we substantially improved our understanding of the H.E.S.S. PSF. We are now able to probe source extensions well below the nominal instrument PSF. We will present the results of these new techniques applied to known VHE gamma-ray sources.