TY - JOUR
T1 - Joint H.E.S.S. and Fermi-LAT analysis of the region around PSR J1813-1749
AU - H.E.S.S. Collaboration
AU - Wach, T.
AU - Mitchell, A. M.W.
AU - Joshi, V.
AU - Funk, S.
AU - Aharonian, F.
AU - Ait Benkhali, F.
AU - Alkan, A.
AU - Aschersleben, J.
AU - Ashkar, H.
AU - Backes, M.
AU - Baktash, A.
AU - Barbosa Martins, V.
AU - Barnacka, A.
AU - Barnard, J.
AU - Batzofin, R.
AU - Becherini, Y.
AU - Beck, G.
AU - Berge, D.
AU - Bernlöhr, K.
AU - Bi, B.
AU - Böttcher, M.
AU - Boisson, C.
AU - Bolmont, J.
AU - de Bony de Lavergne, M.
AU - Borowska, J.
AU - Bouyahiaoui, M.
AU - Bradascio, F.
AU - Breuhaus, M.
AU - Brose, R.
AU - Brown, A.
AU - Brun, F.
AU - Bruno, B.
AU - Bulik, T.
AU - Burger-Scheidlin, C.
AU - Bylund, T.
AU - Cangemi, F.
AU - Caroff, S.
AU - Casanova, S.
AU - Cecil, R.
AU - Celic, J.
AU - Cerruti, M.
AU - Chambery, P.
AU - Chand, T.
AU - Chandra, S.
AU - Chen, A.
AU - Chibueze, J.
AU - Chibueze, O.
AU - Collins, T.
AU - Cotter, G.
AU - Fegan, S.
N1 - Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons.
PY - 2024/9/27
Y1 - 2024/9/27
N2 - HESS J1813-178 is one of the brightest sources detected during the first HESS Galactic Plane survey. The compact source, also detected by MAGIC, is believed to be a pulsar wind nebula powered by one of the most powerful pulsars known in the Galaxy, PSR J1813-1749 with a spindown luminosity of E = 5.6 · 1037 erg s-1. With its extreme physical properties, as well as the pulsar's young age of 5.6 kyrs, the γ-rays detected in this region allow us to study the evolution of a highly atypical system. Previous studies of the region in the GeV energy range show emission extended beyond the size of the compact H.E.S.S. source. Using the archival H.E.S.S. data with improved background methods, we perform a detailed morphological and spectral analysis of the region. Additionally to the compact, bright emission component, we find significantly extended emission, whose position is coincident with HESS J1813-178. We reanalyse the region in GeV and derive a joint-model in order to find a continuous description of the emission in the region from GeV to TeV. Using the results derived in this analysis, as well as X-ray and radio data of the region, we perform multi-wavelength spectral modeling. Possible hadronic or leptonic origins of the γ-ray emission are investigated, and the diffusion parameters necessary to explain the extended emission are examined.
AB - HESS J1813-178 is one of the brightest sources detected during the first HESS Galactic Plane survey. The compact source, also detected by MAGIC, is believed to be a pulsar wind nebula powered by one of the most powerful pulsars known in the Galaxy, PSR J1813-1749 with a spindown luminosity of E = 5.6 · 1037 erg s-1. With its extreme physical properties, as well as the pulsar's young age of 5.6 kyrs, the γ-rays detected in this region allow us to study the evolution of a highly atypical system. Previous studies of the region in the GeV energy range show emission extended beyond the size of the compact H.E.S.S. source. Using the archival H.E.S.S. data with improved background methods, we perform a detailed morphological and spectral analysis of the region. Additionally to the compact, bright emission component, we find significantly extended emission, whose position is coincident with HESS J1813-178. We reanalyse the region in GeV and derive a joint-model in order to find a continuous description of the emission in the region from GeV to TeV. Using the results derived in this analysis, as well as X-ray and radio data of the region, we perform multi-wavelength spectral modeling. Possible hadronic or leptonic origins of the γ-ray emission are investigated, and the diffusion parameters necessary to explain the extended emission are examined.
M3 - Conference article
AN - SCOPUS:85212292937
SN - 1824-8039
VL - 444
JO - Proceedings of Science
JF - Proceedings of Science
M1 - 589
T2 - 38th International Cosmic Ray Conference, ICRC 2023
Y2 - 26 July 2023 through 3 August 2023
ER -