Multi-wavelength study of the galactic PeVatron candidate LHAASO J2108+5157

Abe, S.; Aguasca-Cabot, A.; Agudo, I.; Alvarez Crespo, N.; Antonelli, L.A.; Aramo, C.; Arbet-Engels, A.; Artero, M.; Asano, K.; Aubert, P.; Baktash, A.; Bamba, A.; Baquero Larriva, A.; Baroncelli, L.; Barres de Almeida, U.; Barrio, J.A.; Batkovic, I.; Baxter, J.; Becerra González, J.; Bernardini, E.; Bernardos, M.I.; Bernete Medrano, J.; Berti, A.; Bhattacharjee, P.; Biederbeck, N.; Bigongiari, C.; Bissaldi, E.; Blanch, O.; Bordas, P.; Buisson, C.; Bulgarelli, A.; Burelli, I.; Buscemi, M.; Cardillo, M.; Caroff, S.; Carosi, A.; Cassol, F.; Cauz, D.; Ceribella, G.; Chai, Y.; Cheng, K.; Chiavassa, A.; Chikawa, M.; Chytka, L.; Cifuentes, A.; Contreras, J.L.; Cortina, J.; Costantini, H.; D'Amico, G.; Dalchenko, M.; De Angelis, A.; de Bony de Lavergne, M.; De Lotto, B.; de Menezes, R.; Deleglise, G.; Delgado, C.; Delgado Mengual, J.; della Volpe, D.; Dellaiera, M.; Di Piano, A.; Di Pierro, F.; Di Tria, R.; Di Venere, L.; Díaz, C.; Dominik, R.M.; Dominis Prester, D.; Donini, A.; Dorner, D.; Doro, M.; Elsässer, D.; Emery, G.; Escudero, J.; Fallah Ramazani, V.; Ferrara, G.; Fiasson, A.; Freixas Coromina, L.; Fröse, S.; Fukami, S.; Fukazawa, Y.; Garcia, E.; Garcia López, R.; Gasparrini, D.; Geyer, D.; Giesbrecht Paiva, J.; Giglietto, N.; Giordano, F.; Giro, E.; Gliwny, P.; Godinovic, N.; Grau, R.; Green, D.; Green, J.; Gunji, S.; Hackfeld, J.; Hadasch, D.; Hahn, A.; Hashiyama, K.; Hassan, T.; Hayashi, K.; Heckmann, L.; Heller, M.; Herrera Llorente, J.; Hirotani, K.; Hoffmann, D.; Horns, D.; Houles, J.; Hrabovsky, M.; Hrupec, D.; Hui, D.; Hütten, M.; Imazawa, R.; Inada, T.; Inome, Y.; Ioka, K.; Iori, M.; Ishio, K.; Iwamura, Y.; Jacquemont, M.; Jimenez Martinez, I.; Jurysek, J.; Kagaya, M.; Karas, V.; Katagiri, H.; Kataoka, J.; Kerszberg, D.; Kobayashi, Y.; Kong, A.; Kubo, H.; Kushida, J.; Lainez, M.; Lamanna, G.; Lamastra, A.; Le Flour, T.; Linhoff, M.; Longo, F.; López-Coto, R.; López-Moya, M.; López-Oramas, A.; Loporchio, S.; Lorini, A.; Luque-Escamilla, P.L.; Majumdar, P.; Makariev, M.; Mandat, D.; Manganaro, M.; Manicò, G.; Mannheim, K.; Mariotti, M.; Marquez, P.; Marsella, G.; Martí, J.; Martinez, O.; Martínez, G.; Martínez, M.; Marusevec, P.; Mas-Aguilar, A.; Maurin, G.; Mazin, D.; Mestre Guillen, E.; Micanovic, S.; Miceli, D.; Miener, T.; Miranda, J.M.; Mirzoyan, R.; Mizuno, T.; Molero Gonzalez, M.; Molina, E.; Montaruli, T.; Monteiro, I.; Moralejo, A.; Morcuende, D.; Morselli, A.; Mrakovcic, K.; Murase, K.; Nagai, A.; Nakamori, T.; Nickel, L.; Nievas, M.; Nishijima, K.; Noda, K.; Nosek, D.; Nozaki, S.; Ohishi, M.; Ohtani, Y.; Okazaki, N.; Okumura, A.; Orito, R.; Otero-Santos, J.; Palatiello, M.; Paneque, D.; Pantaleo, F.R.; Paoletti, R.; Paredes, J.M.; Pavletić, L.; Pech, M.; Pecimotika, M.; Pietropaolo, E.; Pirola, G.; Podobnik, F.; Poireau, V.; Polo, M.; Pons, E.; Prandini, E.; Prast, J.; Priyadarshi, C.; Prouza, M.; Rando, R.; Rhode, W.; Ribó, M.; Rizi, V.; Rodriguez Fernandez, G.; Saito, T.; Sakurai, S.; Sanchez, D.A.; Šarić, T.; Saturni, F.G.; Scherpenberg, J.; Schleicher, B.; Schmuckermaier, F.; Schubert, J.L.; Schussler, F.; Schweizer, T.; Seglar Arroyo, M.; Sitarek, J.; Sliusar, V.; Spolon, A.; Strišković, J.; Strzys, M.; Suda, Y.; Sunada, Y.; Tajima, H.; Takahashi, M.; Takahashi, H.; Takata, J.; Takeishi, R.; Tam, P.H.T.; Tanaka, S.J.; Tateishi, D.; Temnikov, P.; Terada, Y.; Terauchi, K.; Terzic, T.; Teshima, M.; Tluczykont, M.; Tokanai, F.; Torres, D.F.; Travnicek, P.; Truzzi, S.; Tutone, A.; Uhlrich, G.; Vacula, M.; Vázquez Acosta, M.; Verguilov, V.; Viale, I.; Vigliano, A.; Vigorito, C.F.; Vitale, V.; Voutsinas, G.; Vovk, I.; Vuillaume, T.; Walter, R.; Will, M.; Yamamoto, T.; Yamazaki, R.; Yoshida, T.; Yoshikoshi, T.; Zywucka, N.; Balbo, M.; Eckert, D.; Tramacere, A.

doi:10.1051/0004-6361/202245086

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Multi-wavelength study of the galactic PeVatron candidate LHAASO J2108+5157

Abe, S., Aguasca-Cabot, A., Agudo, I., Alvarez Crespo, N., Antonelli, L., Aramo, C., et al. (2023). Multi-wavelength study of the galactic PeVatron candidate LHAASO J2108+5157. Astronomy & Astrophysics, 673, A75. doi:10.1051/0004-6361/202245086.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000F-1262-E Version Permalink: https://hdl.handle.net/21.11116/0000-000F-1263-D

Genre: Journal Article

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Abe, S.¹, Author
Aguasca-Cabot, A.¹, Author
Agudo, I.¹, Author
Alvarez Crespo, N.¹, Author
Antonelli, L.A.¹, Author
Aramo, C.¹, Author
Arbet-Engels, A.¹, Author
Artero, M.¹, Author
Asano, K.¹, Author
Aubert, P.¹, Author
Baktash, A.¹, Author
Bamba, A.¹, Author
Baquero Larriva, A.¹, Author
Baroncelli, L.¹, Author
Barres de Almeida, U.¹, Author
Barrio, J.A.¹, Author
Batkovic, I.¹, Author
Baxter, J.¹, Author
Becerra González, J.¹, Author
Bernardini, E.¹, Author
Bernardos, M.I.¹, AuthorBernete Medrano, J.¹, AuthorBerti, A.¹, AuthorBhattacharjee, P.¹, AuthorBiederbeck, N.¹, AuthorBigongiari, C.¹, AuthorBissaldi, E.¹, AuthorBlanch, O.¹, AuthorBordas, P.¹, AuthorBuisson, C.¹, AuthorBulgarelli, A.¹, AuthorBurelli, I.¹, AuthorBuscemi, M.¹, AuthorCardillo, M.¹, AuthorCaroff, S.¹, AuthorCarosi, A.¹, AuthorCassol, F.¹, AuthorCauz, D.¹, AuthorCeribella, G.¹, AuthorChai, Y.¹, AuthorCheng, K.¹, AuthorChiavassa, A.¹, AuthorChikawa, M.¹, AuthorChytka, L.¹, AuthorCifuentes, A.¹, AuthorContreras, J.L.¹, AuthorCortina, J.¹, AuthorCostantini, H.¹, AuthorD'Amico, G.¹, AuthorDalchenko, M.¹, AuthorDe Angelis, A.¹, Authorde Bony de Lavergne, M.¹, AuthorDe Lotto, B.¹, Authorde Menezes, R.¹, AuthorDeleglise, G.¹, AuthorDelgado, C.¹, AuthorDelgado Mengual, J.¹, Authordella Volpe, D.¹, AuthorDellaiera, M.¹, AuthorDi Piano, A.¹, AuthorDi Pierro, F.¹, AuthorDi Tria, R.¹, AuthorDi Venere, L.¹, AuthorDíaz, C.¹, AuthorDominik, R.M.¹, AuthorDominis Prester, D.¹, AuthorDonini, A.¹, AuthorDorner, D.¹, AuthorDoro, M.¹, AuthorElsässer, D.¹, AuthorEmery, G.¹, AuthorEscudero, J.¹, AuthorFallah Ramazani, V.¹, AuthorFerrara, G.¹, AuthorFiasson, A.¹, AuthorFreixas Coromina, L.¹, AuthorFröse, S.¹, AuthorFukami, S.¹, AuthorFukazawa, Y.¹, AuthorGarcia, E.¹, AuthorGarcia López, R.¹, AuthorGasparrini, D.¹, AuthorGeyer, D.¹, AuthorGiesbrecht Paiva, J.¹, AuthorGiglietto, N.¹, AuthorGiordano, F.¹, AuthorGiro, E.¹, AuthorGliwny, P.¹, AuthorGodinovic, N.¹, AuthorGrau, R.¹, AuthorGreen, D.¹, AuthorGreen, J.¹, AuthorGunji, S.¹, AuthorHackfeld, J.¹, AuthorHadasch, D.¹, AuthorHahn, A.¹, AuthorHashiyama, K.¹, AuthorHassan, T.¹, AuthorHayashi, K.¹, AuthorHeckmann, L.¹, AuthorHeller, M.¹, AuthorHerrera Llorente, J.¹, AuthorHirotani, K.¹, AuthorHoffmann, D.¹, AuthorHorns, D.¹, AuthorHoules, J.¹, AuthorHrabovsky, M.¹, AuthorHrupec, D.¹, AuthorHui, D.¹, AuthorHütten, M.¹, AuthorImazawa, R.¹, AuthorInada, T.¹, AuthorInome, Y.¹, AuthorIoka, K.¹, AuthorIori, M.¹, AuthorIshio, K.¹, AuthorIwamura, Y.¹, AuthorJacquemont, M.¹, AuthorJimenez Martinez, I.¹, AuthorJurysek, J.¹, AuthorKagaya, M.¹, AuthorKaras, V.¹, AuthorKatagiri, H.¹, AuthorKataoka, J.¹, AuthorKerszberg, D.¹, AuthorKobayashi, Y.¹, AuthorKong, A.¹, AuthorKubo, H.¹, AuthorKushida, J.¹, AuthorLainez, M.¹, AuthorLamanna, G.¹, AuthorLamastra, A.¹, AuthorLe Flour, T.¹, AuthorLinhoff, M.¹, AuthorLongo, F.¹, AuthorLópez-Coto, R.¹, AuthorLópez-Moya, M.¹, AuthorLópez-Oramas, A.¹, AuthorLoporchio, S.¹, AuthorLorini, A.¹, AuthorLuque-Escamilla, P.L.¹, AuthorMajumdar, P.¹, AuthorMakariev, M.¹, AuthorMandat, D.¹, AuthorManganaro, M.¹, AuthorManicò, G.¹, AuthorMannheim, K.¹, AuthorMariotti, M.¹, AuthorMarquez, P.¹, AuthorMarsella, G.¹, AuthorMartí, J.¹, AuthorMartinez, O.¹, AuthorMartínez, G.¹, AuthorMartínez, M.¹, AuthorMarusevec, P.¹, AuthorMas-Aguilar, A.¹, AuthorMaurin, G.¹, AuthorMazin, D.¹, AuthorMestre Guillen, E.¹, AuthorMicanovic, S.¹, AuthorMiceli, D.¹, AuthorMiener, T.¹, AuthorMiranda, J.M.¹, AuthorMirzoyan, R.¹, AuthorMizuno, T.¹, AuthorMolero Gonzalez, M.¹, AuthorMolina, E.¹, AuthorMontaruli, T.¹, AuthorMonteiro, I.¹, AuthorMoralejo, A.¹, AuthorMorcuende, D.¹, AuthorMorselli, A.¹, AuthorMrakovcic, K.¹, AuthorMurase, K.¹, AuthorNagai, A.¹, AuthorNakamori, T.¹, AuthorNickel, L.¹, AuthorNievas, M.¹, AuthorNishijima, K.¹, AuthorNoda, K.¹, AuthorNosek, D.¹, AuthorNozaki, S.¹, AuthorOhishi, M.¹, AuthorOhtani, Y.¹, AuthorOkazaki, N.¹, AuthorOkumura, A.¹, AuthorOrito, R.¹, AuthorOtero-Santos, J.¹, AuthorPalatiello, M.¹, AuthorPaneque, D.¹, AuthorPantaleo, F.R.¹, AuthorPaoletti, R.¹, AuthorParedes, J.M.¹, AuthorPavletić, L.¹, AuthorPech, M.¹, AuthorPecimotika, M.¹, AuthorPietropaolo, E.¹, AuthorPirola, G.¹, AuthorPodobnik, F.¹, AuthorPoireau, V.¹, AuthorPolo, M.¹, AuthorPons, E.¹, AuthorPrandini, E.¹, AuthorPrast, J.¹, AuthorPriyadarshi, C.¹, AuthorProuza, M.¹, AuthorRando, R.¹, AuthorRhode, W.¹, AuthorRibó, M.¹, AuthorRizi, V.¹, AuthorRodriguez Fernandez, G.¹, AuthorSaito, T.¹, AuthorSakurai, S.¹, AuthorSanchez, D.A.¹, AuthorŠarić, T.¹, AuthorSaturni, F.G.¹, AuthorScherpenberg, J.¹, AuthorSchleicher, B.¹, AuthorSchmuckermaier, F.¹, AuthorSchubert, J.L.¹, AuthorSchussler, F.¹, AuthorSchweizer, T.¹, AuthorSeglar Arroyo, M.¹, AuthorSitarek, J.¹, AuthorSliusar, V.¹, AuthorSpolon, A.¹, AuthorStrišković, J.¹, AuthorStrzys, M.¹, AuthorSuda, Y.¹, AuthorSunada, Y.¹, AuthorTajima, H.¹, AuthorTakahashi, M.¹, AuthorTakahashi, H.¹, AuthorTakata, J.¹, AuthorTakeishi, R.¹, AuthorTam, P.H.T.¹, AuthorTanaka, S.J.¹, AuthorTateishi, D.¹, AuthorTemnikov, P.¹, AuthorTerada, Y.¹, AuthorTerauchi, K.¹, AuthorTerzic, T.¹, AuthorTeshima, M.¹, AuthorTluczykont, M.¹, AuthorTokanai, F.¹, AuthorTorres, D.F.¹, AuthorTravnicek, P.¹, AuthorTruzzi, S.¹, AuthorTutone, A.¹, AuthorUhlrich, G.¹, AuthorVacula, M.¹, AuthorVázquez Acosta, M.¹, AuthorVerguilov, V.¹, AuthorViale, I.¹, AuthorVigliano, A.¹, AuthorVigorito, C.F.¹, AuthorVitale, V.¹, AuthorVoutsinas, G.¹, AuthorVovk, I.¹, AuthorVuillaume, T.¹, AuthorWalter, R.¹, AuthorWill, M.¹, AuthorYamamoto, T.¹, AuthorYamazaki, R.¹, AuthorYoshida, T.¹, AuthorYoshikoshi, T.¹, AuthorZywucka, N.¹, AuthorBalbo, M.¹, AuthorEckert, D.¹, AuthorTramacere, A.¹, Author more..

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1Max Planck Institute for Physics, Max Planck Society and Cooperation Partners, ou_2253650

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Abstract: LHAASO J2108+5157 is one of the few known unidentified Ultra-High-Energy (UHE) gamma-ray sources with no Very-High-Energy (VHE) counterpart, recently discovered by the LHAASO collaboration. We observed LHAASO J2108+5157 in the X-ray band with XMM-Newton in 2021 for a total of 3.8 hours and at TeV energies with the Large-Sized Telescope prototype (LST-1), yielding 49 hours of good quality data. In addition, we analyzed 12 years of Fermi-LAT data, to better constrain emission of its High-Energy (HE) counterpart 4FGL J2108.0+5155. We found an excess (3.7 sigma) in the LST-1 data at energies E > 3 TeV. Further analysis in the whole LST-1 energy range assuming a point-like source, resulted in a hint (2.2 sigma) of hard emission which can be described with a single power law with photon index Gamma = 1.6 +- 0.2 between 0.3 - 100 TeV. We did not find any significant extended emission which could be related to a Supernova Remnant (SNR) or Pulsar Wind Nebula (PWN) in the XMM-Newton data, which puts strong constraints on possible synchrotron emission of relativistic electrons. The LST-1 and LHAASO observations can be explained as inverse Compton-dominated leptonic emission of relativistic electrons with a cutoff energy of $100^{+70}_{-30}$ TeV. The low magnetic field in the source imposed by the X-ray upper limits on synchrotron emission is compatible with a hypothesis of a PWN or a TeV halo. The lack of a pulsar in the neighborhood of the UHE source is a challenge to the PWN/TeV-halo scenario. The UHE gamma rays can also be explained as $\pi^0$ decay-dominated hadronic emission due to interaction of relativistic protons with one of the two known molecular clouds in the direction of the source. The hard spectrum in the LST-1 band is compatible with protons escaping a shock around a middle-aged SNR because of their high low-energy cut-off.

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Dates: Date issued: 2023

Publication Status: Issued

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Identifiers: Other: MPP-2023-370
URI: https://publications.mppmu.mpg.de/?action=search&mpi=MPP-2023-370
arXiv: arxiv:2210.00775
DOI: 10.1051/0004-6361/202245086
URI: https://inspirehep.net/arxiv/2210.00775

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Title: Astronomy & Astrophysics

Abbreviation : Astron.Astrophys.

Source Genre: Journal

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Pages: - Volume / Issue: 673 Sequence Number: - Start / End Page: A75 Identifier: -