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Search for PeV Gamma-Ray Emission from the Southern Hemisphere with 5 Yr of Data from the IceCube Observatory

dc.contributor.authorArguelles Delgado, Carlos A
dc.contributor.authorAxani, Spencer Nicholas
dc.contributor.authorCollin, G. H.
dc.contributor.authorConrad, Janet Marie
dc.contributor.authorDiaz, Alejandro
dc.contributor.authorMoulai, Marjon H.
dc.date.accessioned2022-08-10T21:01:24Z
dc.date.available2021-09-20T18:21:19Z
dc.date.available2022-08-10T21:01:24Z
dc.date.issued2020-02
dc.date.submitted2020-01
dc.identifier.urihttps://hdl.handle.net/1721.1/132199.2
dc.description.abstract© 2020. The American Astronomical Society. All rights reserved. The measurement of diffuse PeV gamma-ray emission from the Galactic plane would provide information about the energy spectrum and propagation of Galactic cosmic rays, and the detection of a pointlike source of PeV gamma-rays would be strong evidence for a Galactic source capable of accelerating cosmic rays up to at least a few PeV. This paper presents several unbinned maximum-likelihood searches for PeV gamma-rays in the Southern Hemisphere using 5 yr of data from the IceTop air shower surface detector and the in-ice array of the IceCube Observatory. The combination of both detectors takes advantage of the low muon content and deep shower maximum of gamma-ray air showers and provides excellent sensitivity to gamma-rays between ∼0.6 and 100 PeV. Our measurements of pointlike and diffuse Galactic emission of PeV gamma-rays are consistent with the background, so we constrain the angle-integrated diffuse gamma-ray flux from the Galactic plane at 2 PeV to 2.61 × 10-19 cm-2 s-1 TeV-1 at 90% confidence, assuming an E -3 spectrum, and we estimate 90% upper limits on pointlike emission at 2 PeV between 10-21 and 10-20 cm-2 s-1 TeV-1 for an E -2 spectrum, depending on decl. Furthermore, we exclude unbroken power-law emission up to 2 PeV for several TeV gamma-ray sources observed by the High Energy Spectroscopic System and calculate upper limits on the energy cutoffs of these sources at 90% confidence. We also find no PeV gamma-rays correlated with neutrinos from IceCube's high-energy starting event sample. These are currently the strongest constraints on PeV gamma-ray emission.en_US
dc.language.isoen
dc.publisherAmerican Astronomical Societyen_US
dc.relation.isversionof10.3847/1538-4357/AB6D67en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceThe American Astronomical Societyen_US
dc.titleSearch for PeV Gamma-Ray Emission from the Southern Hemisphere with 5 Yr of Data from the IceCube Observatoryen_US
dc.typeArticleen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physicsen_US
dc.relation.journalAstrophysical Journalen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2020-09-24T16:52:23Z
dspace.orderedauthorsAartsen, MG; Ackermann, M; Adams, J; Aguilar, JA; Ahlers, M; Ahrens, M; Alispach, C; Andeen, K; Anderson, T; Ansseau, I; Anton, G; Argüelles, C; Auffenberg, J; Axani, S; Backes, P; Bagherpour, H; Bai, X; Balagopal V, A; Barbano, A; Barwick, SW; Bastian, B; Baum, V; Baur, S; Bay, R; Beatty, JJ; Becker, K-H; Becker Tjus, J; BenZvi, S; Berley, D; Bernardini, E; Besson, DZ; Binder, G; Bindig, D; Blaufuss, E; Blot, S; Bohm, C; Börner, M; Böser, S; Botner, O; Böttcher, J; Bourbeau, E; Bourbeau, J; Bradascio, F; Braun, J; Bron, S; Brostean-Kaiser, J; Burgman, A; Buscher, J; Busse, RS; Carver, T; Chen, C; Cheung, E; Chirkin, D; Choi, S; Clark, K; Classen, L; Coleman, A; Collin, GH; Conrad, JM; Coppin, P; Correa, P; Cowen, DF; Cross, R; Dave, P; Clercq, CD; DeLaunay, JJ; Dembinski, H; Deoskar, K; Ridder, SD; Desiati, P; de Vries, KD; de Wasseige, G; de With, M; DeYoung, T; Diaz, A; Díaz-Vélez, JC; Dujmovic, H; Dunkman, M; Dvorak, E; Eberhardt, B; Ehrhardt, T; Eller, P; Engel, R; Evenson, PA; Fahey, S; Fazely, AR; Felde, J; Filimonov, K; Finley, C; Franckowiak, A; Friedman, E; Fritz, A; Gaisser, TK; Gallagher, J; Ganster, E; Garrappa, S; Gerhardt, L; Ghorbani, K; Glauch, T; Glüsenkamp, T; Goldschmidt, A; Gonzalez, JG; Grant, D; Griffith, Z; Griswold, S; Günder, M; Gündüz, M; Haack, C; Hallgren, A; Halve, L; Halzen, F; Hanson, K; Haungs, A; Hebecker, D; Heereman, D; Heix, P; Helbing, K; Hellauer, R; Henningsen, F; Hickford, S; Hignight, J; Hill, GC; Hoffman, KD; Hoffmann, R; Hoinka, T; Hokanson-Fasig, B; Hoshina, K; Huang, F; Huber, M; Huber, T; Hultqvist, K; Hünnefeld, M; Hussain, R; In, S; Iovine, N; Ishihara, A; Japaridze, GS; Jeong, M; Jero, K; Jones, BJP; Jonske, F; Joppe, R; Kang, D; Kang, W; Kappes, A; Kappesser, D; Karg, T; Karl, M; Karle, A; Katz, U; Kauer, M; Kelley, JL; Kheirandish, A; Kim, J; Kintscher, T; Kiryluk, J; Kittler, T; Klein, SR; Koirala, R; Kolanoski, H; Köpke, L; Kopper, C; Kopper, S; Koskinen, DJ; Kowalski, M; Krings, K; Krückl, G; Kulacz, N; Kurahashi, N; Kyriacou, A; Labare, M; Lanfranchi, JL; Larson, MJ; Lauber, F; Lazar, JP; Leonard, K; Leszczyńska, A; Leuermann, M; Liu, QR; Lohfink, E; Lozano Mariscal, CJ; Lu, L; Lucarelli, F; Lünemann, J; Luszczak, W; Lyu, Y; Ma, WY; Madsen, J; Maggi, G; Mahn, KBM; Makino, Y; Mallik, P; Mallot, K; Mancina, S; Mariş, IC; Maruyama, R; Mase, K; Maunu, R; McNally, F; Meagher, K; Medici, M; Medina, A; Meier, M; Meighen-Berger, S; Menne, T; Merino, G; Meures, T; Micallef, J; Mockler, D; Momenté, G; Montaruli, T; Moore, RW; Morse, R; Moulai, M; Muth, P; Nagai, R; Naumann, U; Neer, G; Niederhausen, H; Nowicki, SC; Nygren, DR; Obertacke Pollmann, A; Oehler, M; Olivas, A; O’Murchadha, A; O’Sullivan, E; Palczewski, T; Pandya, H; Pankova, DV; Park, N; Peiffer, P; Pérez de los Heros, C; Philippen, S; Pieloth, D; Pinat, E; Pizzuto, A; Plum, M; Porcelli, A; Price, PB; Przybylski, GT; Raab, C; Raissi, A; Rameez, M; Rauch, L; Rawlins, K; Rea, IC; Reimann, R; Relethford, B; Renschler, M; Renzi, G; Resconi, E; Rhode, W; Richman, M; Robertson, S; Rongen, M; Rott, C; Ruhe, T; Ryckbosch, D; Rysewyk, D; Safa, I; Sanchez Herrera, SE; Sandrock, A; Sandroos, J; Santander, M; Sarkar, S; Sarkar, S; Satalecka, K; Schaufel, M; Schieler, H; Schlunder, P; Schmidt, T; Schneider, A; Schneider, J; Schröder, FG; Schumacher, L; Sclafani, S; Seckel, D; Seunarine, S; Shefali, S; Silva, M; Snihur, R; Soedingrekso, J; Soldin, D; Song, M; Spiczak, GM; Spiering, C; Stachurska, J; Stamatikos, M; Stanev, T; Stein, R; Steinmüller, P; Stettner, J; Steuer, A; Stezelberger, T; Stokstad, RG; Stößl, A; Strotjohann, NL; Stürwald, T; Stuttard, T; Sullivan, GW; Taboada, I; Tenholt, F; Ter-Antonyan, S; Terliuk, A; Tilav, S; Tollefson, K; Tomankova, L; Tönnis, C; Toscano, S; Tosi, D; Trettin, A; Tselengidou, M; Tung, CF; Turcati, A; Turcotte, R; Turley, CF; Ty, B; Unger, E; Unland Elorrieta, MA; Usner, M; Vandenbroucke, J; Van Driessche, W; van Eijk, D; van Eijndhoven, N; Vanheule, S; van Santen, J; Vraeghe, M; Walck, C; Wallace, A; Wallraff, M; Wandkowsky, N; Watson, TB; Weaver, C; Weindl, A; Weiss, MJ; Weldert, J; Wendt, C; Werthebach, J; Whelan, BJ; Whitehorn, N; Wiebe, K; Wiebusch, CH; Wille, L; Williams, DR; Wills, L; Wolf, M; Wood, J; Wood, TR; Woschnagg, K; Wrede, G; Xu, DL; Xu, XW; Xu, Y; Yanez, JP; Yodh, G; Yoshida, S; Yuan, T; Zöcklein, Men_US
dspace.date.submission2020-09-24T16:52:26Z
mit.journal.volume891en_US
mit.journal.issue1en_US
mit.licensePUBLISHER_POLICY
mit.metadata.statusPublication Information Neededen_US


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