% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @ARTICLE{Aharonian:619078, author = {Aharonian, F. and Benkhali, F. Ait and Aschersleben, J. and Ashkar, H. and Backes, M. and Baktash, A. and Barbosa Martins, V. and Barnard, J. and Batzofin, R. and Becherini, Y. and Berge, David and Bernlöhr, K. and Bi, B. and Böttcher, M. and Boisson, C. and Bolmont, J. and de Bony de Lavergne, M. and Borowska, J. and Bouyahiaoui, M. and Breuhaus, M. and Brose, R. and Brun, F. and Bruno, B. and Bulik, T. and Burger-Scheidlin, C. and Caroff, S. and Casanova, S. and Cecil, R. and Celic, J. and Cerruti, M. and Chambery, P. and Chand, T. and Chen, A. and Chibueze, J. and Chibueze, O. and Cotter, G. and Mbarubucyeye, J. Damascene and Djannati-Ataï, A. and Dmytriiev, A. and Doroshenko, V. and Einecke, S. and Ernenwein, J.-P. and Feijen, K. and Filipovic, M. and Fontaine, G. and Füßling, M. and Funk, S. and Gabici, S. and Gallant, Y. A. and Ghafourizadeh, S. and Giavitto, G. and Glawion, D. and Glicenstein, J. F. and Goswami, P. and Grolleron, G. and Grondin, M.-H. and Hinton, J. A. and Hofmann, W. and Holch, Tim Lukas and Holler, M. and Jamrozy, M. and Jankowsky, F. and Joshi, V. and Jung-Richardt, I. and Katarzynski, K. and Khatoon, R. and Khélifi, B. and Klepser, S. and Kluzniak, W. and Komin, Nu. and Kosack, K. and Kostunin, D. and Kundu, A. and Lang, R. G. and Le Stum, S. and Leitl, F. and Lemière, A. and Lemoine-Goumard, M. and Lenain, J.-P. and Leuschner, F. and Mackey, J. and Malyshev, D. and Malyshev, D. and Marandon, V. and Marinos, P. and Martí-Devesa, G. and Marx, R. and Mehta, A. and Mitchell, A. and Moderski, R. and Mohrmann, L. and Montanari, A. and Moulin, E. and Murach, T. and de Naurois, M. and Niemiec, J. and Noel, A. Priyana and O'Brien, P. and Ohm, S. and Olivera-Nieto, L. and de Ona Wilhelmi, E. and Ostrowski, M. and Panny, S. and Panter, M. and Parsons, R. D. and Prokhorov, D. A. and Pühlhofer, G. and Punch, M. and Quirrenbach, A. and Regeard, M. and Reichherzer, P. and Reimer, A. and Reimer, O. and Ren, H. and Renaud, M. and Reville, B. and Rieger, F. and Roellinghoff, G. and Rudak, B. and Sahakian, V. and Salzmann, H. and Sasaki, M. and Schüssler, F. and Schutte, H. M. and Shapopi, J. N. S. and Specovius, A. and Spencer, S. and Steenkamp, R. and Steinmassl, S. and Steppa, C. and Sushch, I. and Suzuki, H. and Takahashi, T. and Tanaka, T. and Terrier, R. and Tluczykont, M. and Tsuji, N. and Unbehaun, T. and van Eldik, C. and Vecchi, M. and Veh, J. and Venter, C. and Vink, J. and Wach, T. and Wagner, S. J. and Wierzcholska, A. and Zacharias, M. and Zargaryan, D. and Zdziarski, A. A. and Zouari, S. and Zywucka, N.}, collaboration = {H. E. S. S.{ Collaboration}}, title = {{U}nveiling extended gamma-ray emission around {HESS} {J}1813-178}, journal = {Astronomy and astrophysics}, volume = {686}, issn = {0004-6361}, address = {Les Ulis}, publisher = {EDP Sciences}, reportid = {PUBDB-2024-07365, arXiv:2403.16802}, pages = {A149}, year = {2024}, note = {$A\&A$ 686, A149 (2024). 13+5 pages, 13+11 figures. Accepted for publication in $A\&A.$ Corresponding authors: T.Wach, A.Mitchell, V.Joshi, P.Chambéry he German Research Foundation(DFG), the Helmholtz Association}, abstract = {Context. HESS J1813−178 is a very-high-energy γ-ray source spatially coincident with the young and energetic pulsar PSR J1813−1749and thought to be associated with its pulsar wind nebula (PWN). Recently, evidence for extended high-energy emission in the vicinityof the pulsar has been revealed in the Fermi Large Area Telescope (LAT) data. This motivates revisiting the HESS J1813−178 region,taking advantage of improved analysis methods and an extended dataset.Aims. Using data taken by the High Energy Stereoscopic System (H.E.S.S.) experiment and the Fermi-LAT, we aim to describe theγ-ray emission in the region with a consistent model, to provide insights into its origin.Methods. We performed a likelihood-based analysis on 32 hours of H.E.S.S. data and 12 yr of Fermi-LAT data and we fitted a spectromorphological model to the combined datasets. These results allowed us to develop a physical model for the origin of the observedγ-ray emission in the region.Results. In addition to the compact very-high-energy γ-ray emission centred on the pulsar, we find a significant yet previously undetected component along the Galactic plane. With Fermi-LAT data, we confirm extended high-energy emission consistent with theposition and elongation of the extended emission observed with H.E.S.S. These results establish a consistent description of the emission in the region from GeV energies to several tens of TeV.Conclusions. This study suggests that HESS J1813−178 is associated with a γ-ray PWN powered by PSR J1813−1749. A possibleorigin of the extended emission component is inverse Compton emission from electrons and positrons that have escaped the confinesof the pulsar and form a halo around the PWN.}, cin = {$Z_GA$ / $Z_HESS$}, ddc = {520}, cid = {$I:(DE-H253)Z_GA-20210408$ / $I:(DE-H253)Z_HESS-20210408$}, pnm = {613 - Matter and Radiation from the Universe (POF4-613)}, pid = {G:(DE-HGF)POF4-613}, experiment = {EXP:(DE-H253)HESS-20170101}, typ = {PUB:(DE-HGF)16}, eprint = {2403.16802}, howpublished = {arXiv:2403.16802}, archivePrefix = {arXiv}, SLACcitation = {$\%\%CITATION$ = $arXiv:2403.16802;\%\%$}, UT = {WOS:001253345700001}, doi = {10.1051/0004-6361/202348374}, url = {https://bib-pubdb1.desy.de/record/619078}, }