2025ApJ...984..123A


Query : 2025ApJ...984..123A

2025ApJ...984..123A - Astrophys. J., 984, 123 (2025/May-2)

The Distribution of Ultrahigh-energy Cosmic Rays along the Supergalactic Plane Measured at the Pierre Auger Observatory.

ABDUL HALIM A., ABREU P., AGLIETTA M., ALLEKOTTE I., ALMEIDA CHEMINANT K., ALMELA A., ALOISIO R., ALVAREZ-MUNIZ J., AMMERMAN YEBRA J., ANASTASI G.A., ANCHORDOQUI L., ANDRADA B., ANDRINGA S., ANUKRITI, APOLLONIO L., ARAMO C., ARAUJO FERREIRA P.R., ARNONE E., ARTEAGA VELAZQUEZ J.C., ASSIS P., AVILA G., AVOCONE E., BAKALOVA A., BARBATO F., BARTZ MOCELLIN A., BELLIDO J.A., BERAT C., BERTAINA M.E., BHATTA G., BIANCIOTTO M., BIERMANN P.L., BINET V., BISMARK K., BISTER T., BITEAU J., BLAZEK J., BLEVE C., BLUMER J., BOHACOVA M., BONCIOLI D., BONIFAZI C., BONNEAU ARBELETCHE L., BORODAI N., BRACK J., BRICHETTO ORCHERA P.G., BRIECHLE F.L., BUENO A., BUITINK S., BUSCEMI M., BUSKEN M., BWEMBYA A., CABALLERO-MORA K.S., CABANA-FREIRE S., CACCIANIGA L., CARUSO R., CASTELLINA A., CATALANI F., CATALDI G., CAZON L., CERDA M., CERMENATI A., CHINELLATO J.A., CHUDOBA J., CHYTKA L., CLAY R.W., COBOS CERUTTI A.C., COLALILLO R., COLEMAN A., COLUCCIA M.R., CONCEICAO R., CONDORELLI A., CONSOLATI G., CONTE M., CONVENGA F., CORREIA DOS SANTOS D., COSTA P.J., COVAULT C.E., CRISTINZIANI M., CRUZ SANCHEZ C.S., DASSO S., DAUMILLER K., DAWSON B.R., DE ALMEIDA R.M., DE JESUS J., DE JONG S.J., DE MELLO NETO J.R.T., DE MITRI I., DE OLIVEIRA J., DE OLIVEIRA FRANCO D., DE PALMA F., DE SOUZA V., DE SOUZA DE ERRICO B.P., DE VITO E., DEL POPOLO A., DELIGNY O., DENNER N., DEVAL L., DI MATTEO A., DOBRE M., DOBRIGKEIT C., D'OLIVO J.C., DOMINGUES MENDES L.M., DOROSTI Q., DOS ANJOS J.C., DOS ANJOS R.C., EBR J., ELLWANGER F., EMAM M., ENGEL R., EPICOCO I., ERDMANN M., ETCHEGOYEN A., EVOLI C., FALCKE H., FARMER J., FARRAR G., FAUTH A.C., FAZZINI N., FELDBUSCH F., FENU F., FERNANDES A., FICK B., FIGUEIRA J.M., FILIPCIC A., FITOUSSI T., FLAGGS B., FODRAN T., FUJII T., FUSTER A., GALEA C., GALELLI C., GARCIA B., GAUDU C., GEMMEKE H., GESUALDI F., GHERGHEL-LASCU A., GHIA P.L., GIACCARI U., GLOMBITZA J., GOBBI F., GOLLAN F., GOLUP G., GOMEZ BERISSO M., GOMEZ VITALE P.F., GONGORA J.P., GONZALEZ J.M., GONZALEZ N., GOOS I., GORA D., GORGI A., GOTTOWIK M., GRUBB T.D., GUARINO F., GUEDES G.P., GUIDO E., GULZOW L., HAHN S., HAMAL P., HAMPEL M.R., HANSEN P., HARARI D., HARVEY V.M., HAUNGS A., HEBBEKER T., HOJVAT C., HORANDEL J.R., HORVATH P., HRABOVSKY M., HUEGE T., INSOLIA A., ISAR P.G., JANECEK P., JILEK V., JOHNSEN J.A., JURYSEK J., KAMPERT K.-H., KEILHAUER B., KHAKURDIKAR A., KIZAKKE COVILAKAM V.V., KLAGES H.O., KLEIFGES M., KNAPP F., KOHLER J., KUNKA N., LAGO B.L., LANGNER N., LEIGUI DE OLIVEIRA M.A., LEMA-CAPEANS Y., LETESSIER-SELVON A., LHENRY-YVON I., LOPES L., LU L., LUCE Q., LUNDQUIST J.P., MACHADO PAYERAS A., MAJERCAKOVA M., MANDAT D., MANNING B.C., MANTSCH P., MARAFICO S., MARIANI F.M., MARIAZZI A.G., MARIS I.C., MARSELLA G., MARTELLO D., MARTINELLI S., MARTINEZ BRAVO O., MARTINS M.A., MATHES H.-J., MATTHEWS J., MATTHIAE G., MAYOTTE E., MAYOTTE S., MAZUR P.O., MEDINA-TANCO G., MEINERT J., MELO D., MENSHIKOV A., MERX C., MICHAL S., MICHELETTI M.I., MIRAMONTI L., MOLLERACH S., MONTANET F., MOREJON L., MORELLO C., MULREY K., MUSSA R., NAMASAKA W.M., NEGI S., NELLEN L., NGUYEN K., NICORA G., NIECHCIOL M., NITZ D., NOSEK D., NOVOTNY V., NOZKA L., NUCITA A., NUNEZ L.A., OLIVEIRA C., PALATKA M., PALLOTTA J., PANJA S., PARENTE G., PAULSEN T., PAWLOWSKY J., PECH M., PEKALA J., PELAYO R., PEREIRA L.A.S., PEREIRA MARTINS E.E., PEREZ ARMAND J., PEREZ BERTOLLI C., PERRONE L., PETRERA S., PETRUCCI C., PIEROG T., PIMENTA M., PLATINO M., PONT B., POTHAST M., POURMOHAMMAD SHAHVAR M., PRIVITERA P., PROUZA M., PUYLEART A., QUERCHFELD S., RAUTENBERG J., RAVIGNANI D., REGINATTO AKIM J.V., REININGHAUS M., RIDKY J., RIEHN F., RISSE M., RIZI V., RODRIGUES DE CARVALHO W., RODRIGUEZ E., RODRIGUEZ ROJO J., RONCORONI M.J., ROSSONI S., ROTH M., ROULET E., ROVERO A.C., RUEHL P., SAFTOIU A., SAHARAN M., SALAMIDA F., SALAZAR H., SALINA G., SANABRIA GOMEZ J.D., SANCHEZ F., SANTOS E.M., SANTOS E., SARAZIN F., SARMENTO R., SATO R., SAVINA P., SCHAFER C.M., SCHERINI V., SCHIELER H., SCHIMASSEK M., SCHIMP M., SCHMIDT D., SCHOLTEN O., SCHOORLEMMER H., SCHOVANEK P., SCHRODER F.G., SCHULTE J., SCHULZ T., SCIUTTO S.J., SCORNAVACCHE M., SEGRETO A., SEHGAL S., SHIVASHANKARA S.U., SIGL G., SILLI G., SIMA O., SIMKOVA K., SIMON F., SMAU R., SMIDA R., SOMMERS P., SORIANO J.F., SQUARTINI R., STADELMAIER M., STANIC S., STASIELAK J., STASSI P., STRAHNZ S., STRAUB M., SUOMIJARVI T., SUPANITSKY A.D., SVOZILIKOVA Z., SZADKOWSKI Z., TAIRLI F., TAPIA A., TARICCO C., TIMMERMANS C., TKACHENKO O., TOBISKA P., TODERO PEIXOTO C.J., TOME B., TORRES Z., TRAVAINI A., TRAVNICEK P., TRIMARELLI C., TUEROS M., UNGER M., VACLAVEK L., VACULA M., VALDES GALICIA J.F., VALORE L., VARELA E., VASQUEZ-RAMIREZ A., VEBERIC D., VENTURA C., VERGARA QUISPE I.D., VERZI V., VICHA J., VINK J., VOROBIOV S., WATANABE C., WATSON A.A., WEINDL A., WIENCKE L., WILCZYNSKI H., WITTKOWSKI D., WUNDHEILER B., YUE B., YUSHKOV A., ZAPPARRATA O., ZAS E., ZAVRTANIK D., ZAVRTANIK M. (The Pierre Auger Collaboration)

Abstract (from CDS):

Ultrahigh-energy cosmic rays are known to be mainly of extragalactic origin, and their propagation is limited by energy losses, so their arrival directions are expected to correlate with the large-scale structure of the local Universe. In this work, we investigate the possible presence of intermediate-scale excesses in the flux of the most energetic cosmic rays from the direction of the supergalactic plane region using events with energies above 20 EeV recorded with the surface detector array of the Pierre Auger Observatory up to 2022 December 31, with a total exposure of 135,000 km2 sr yr. The strongest indication for an excess that we find, with a posttrial significance of 3.1σ, is in the Centaurus region, as in our previous reports, and it extends down to lower energies than previously studied. We do not find any strong hints of excesses from any other region of the supergalactic plane at the same angular scale. In particular, our results do not confirm the reports by the Telescope Array Collaboration of excesses from two regions in the Northern Hemisphere at the edge of the field of view of the Pierre Auger Observatory. With a comparable integrated exposure over these regions, our results there are in good agreement with the expectations from an isotropic distribution.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Cosmic rays - Ultra-high-energy cosmic radiation - Cosmic anisotropy

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 NAME Psc-Per Supercluster SCG 02 33.2 +41 37           ~ 444 1
2 NGC 4945 Sy2 13 05 27.279 -49 28 04.44   9.31 14.40 7.55   ~ 1582 2
3 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
4 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0

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