A VERITAS view of HESS J1857+026 within a multi-wavelength analysis

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dc.contributor.authorChen, Y.
dc.contributor.authorValverde J.
dc.contributor.authorVERITAS Collaboration
dc.contributor.authorA. Archer
dc.contributor.authorP. Bangale
dc.contributor.authorJ. T. Bartkoske
dc.contributor.authorW. Benbow
dc.contributor.authorY. Chen
dc.contributor.authorJ. L. Christiansen
dc.contributor.authorA. J. Chromey
dc.contributor.authorA. Duerr
dc.contributor.authorM. Errando
dc.contributor.authorM. Escobar Godoy
dc.contributor.authorJ. Escudero Pedrosa
dc.contributor.authorQ. Feng
dc.contributor.authorS. Filbert
dc.contributor.authorL. Fortson
dc.contributor.authorA. Furniss
dc.contributor.authorW. Hanlon
dc.contributor.authorO. Hervet
dc.contributor.authorC. E. Hinrichs
dc.contributor.authorJ. Holder
dc.contributor.authorT. B. Humensky
dc.contributor.authorM. Iskakova
dc.contributor.authorW. Jin
dc.contributor.authorM. N. Johnson
dc.contributor.authorE. Joshi
dc.contributor.authorM. Kertzman
dc.contributor.authorM. Kherlakian
dc.contributor.authorD. Kieda
dc.contributor.authorT. K. Kleiner
dc.contributor.authorN. Korzoun
dc.contributor.authorS. Kumar
dc.contributor.authorM. J. Lang
dc.contributor.authorM. Lundy
dc.contributor.authorG. Maier
dc.contributor.authorC. E McGrath
dc.contributor.authorP. Moriarty
dc.contributor.authorR. Mukherjee
dc.contributor.authorW.Ning
dc.contributor.authorR.A.Ong
dc.contributor.authorA.Pandey
dc.contributor.authorM.Pohl
dc.contributor.authorE.Pueschel
dc.contributor.authorJ.Quinn
dc.contributor.authorP.L.Rabinowitz
dc.contributor.authorK.Ragan
dc.contributor.authorP.T.Reynolds
dc.contributor.authorD.Ribeiro
dc.contributor.authorE. Roache
dc.contributor.authorI. Sadeh
dc.contributor.authorL. Saha
dc.contributor.authorH. Salzmann
dc.contributor.authorM. Santander
dc.contributor.authorG. H. Sembroski
dc.contributor.authorB. Shen
dc.contributor.authorM. Splettstoesser
dc.contributor.authorA. K. Talluri
dc.contributor.authorS. Tandon
dc.contributor.authorJ. V. Tucci
dc.contributor.authorJ. Valverde
dc.contributor.authorV. V. Vassiliev
dc.contributor.authorD. A. Williams
dc.contributor.authorS. L. Wong
dc.contributor.authorT. Yoshikoshi
dc.date.accessioned2026-01-22T16:19:21Z
dc.date.issued2025-12-19
dc.description39th International Cosmic Ray Conference, July 14–24, 2025, Geneva, Switzerland
dc.description.abstractHESS J1857+026 remains a mysterious gamma-ray emitter since its discovery in 2008. Despite the disclosure of a nearby pulsar and multiple studies in the high-energy (HE, E > 100 MeV) and very-high-energy (VHE, E > 100 GeV) regimes, there have been no confirmed counterparts (e.g., an SNR shell or other extended structure) in X-ray or other wavelengths. We present the result of our study of the VHE emission of HESS J1857+026 with VERITAS as part of a multi-wavelength investigation to uncover its emission mechanisms. Our result confirms the extended nature of the source and we characterize its spectral and morphological features in the VHE band. Using the morphology of the source revealed in our analysis, we also explore the underlying transport process of a possible electron population in a leptonic PWN scenario for the gamma-ray emission.
dc.description.sponsorshipThis research is supported by grants from the U.S. Department of Energy Office of Science, the U.S. National Science Foundation and the Smithsonian Institution, by NSERC in Canada, and by the Helmholtz Association in Germany. This research used resources provided by the Open Science Grid, which is supported by the National Science Foundation and the U.S. Department of Energy’s Office of Science, and resources of the National Energy Research Scientific Computing Center (NERSC), a U.S. Department of Energy Office of Science User Facility operated under Contract No. DE-AC02-05CH11231. We acknowledge the excellent work of the technical support staff at the Fred Lawrence Whipple Observatory and at the collaborating institutions in the construction and operation of the instrument.
dc.description.urihttp://arxiv.org/abs/2512.17184
dc.format.extent8 pages
dc.genreconference papers and proceedings
dc.genrepreprints
dc.identifierdoi:10.13016/m2eyro-gww4
dc.identifier.urihttps://doi.org/10.48550/arXiv.2512.17184
dc.identifier.urihttp://hdl.handle.net/11603/41570
dc.language.isoen
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Faculty Collection
dc.relation.ispartofUMBC Center for Space Sciences and Technology (CSST) / Center for Research and Exploration in Space Sciences & Technology II (CRSST II)
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectAstrophysics - High Energy Astrophysical Phenomena
dc.titleA VERITAS view of HESS J1857+026 within a multi-wavelength analysis
dc.typeText

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