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30th International Cosmic Ray Conference - ICRC'07, Merida : Mexique (2007)
A deconcolution technique for VHE gamma-ray astronomy and its application to the morphological study of RXJ1713.7-3946 from the H.E.S.S. observations
G. Maurin1, A. Djannati-Ataï2, P. Espigat2

Deconvolution algorithms have been used successfully for optimization/restoration/deblurring of astronomical images in a variety of wavelengths, especially in the optical band (e.g., for HST). We present here an iterative Richardson-Lucy type method designed for treatment of images obtained with the High Energy Stereoscopy System (H.E.S.S.) array of ground- based gamma-ray telescopes. Its application to extended source images, with sufficient signal, yields refined details relevant for the study of correlations with other wavelengths. In this paper, this algorithm is presented, applied to the supernova remnant shell of RXJ1713.7-3946 and then interpreted in terms either of hadronic or leptonic origin of the observed VHE gamma-ray emission.
1 :  SPP - Service de Physique des Particules
2 :  APC - UMR 7164 - AstroParticule et Cosmologie
Physique/Astrophysique/Cosmologie et astrophysique extra-galactique

Planète et Univers/Astrophysique/Cosmologie et astrophysique extra-galactique

Planète et Univers/Astrophysique