A Bayesian analysis of the 69 highest energy cosmic rays detected by the Pierre Auger Observatory

被引：4
作者：
Khanin, Alexander [1 ]
Mortlock, Daniel J. [1 ,2 ]
机构：
[1] Imperial Coll London, Astrophys Grp, Blackett Lab, Prince Consort Rd, London SW7 2AZ, England
[2] Imperial Coll London, Dept Math, London SW7 2AZ, England
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2016年 / 460卷 / 03期
关键词：
methods: statistical; cosmic rays; ACTIVE GALACTIC NUCLEI; ARRIVAL DIRECTIONS; SPECTRUM; ANISOTROPY; CENTAURUS; SEARCH; ARRAY;
D O I：
10.1093/mnras/stw1165
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The origins of ultrahigh energy cosmic rays (UHECRs) remain an open question. Several attempts have been made to cross-correlate the arrival directions of the UHECRs with catalogues of potential sources, but no definite conclusion has been reached. We report a Bayesian analysis of the 69 events, from the Pierre Auger Observatory (PAO), that aims to determine the fraction of the UHECRs that originate from known AGNs in the Veron-Cety & Verson (VCV) catalogue, as well as AGNs detected with the Swift Burst Alert Telescope (Swift-BAT), galaxies from the 2MASS Redshift Survey (2MRS), and an additional volume-limited sample of 17 nearby AGNs. The study makes use of a multilevel Bayesian model of UHECR injection, propagation and detection. We find that for reasonable ranges of prior parameters the Bayes factors disfavour a purely isotropic model. For fiducial values of the model parameters, we report 68 per cent credible intervals for the fraction of source originating UHECRs of ="TM0001" 0.09<^>{+0.05}_{-0.04}, ="TM0002" 0.25<^>{+0.09}_{-0.08}, ="TM0003" 0.24<^>{+0.12}_{-0.10}, and ="TM0004" 0.08<^>{+0.04}_{-0.03} for the VCV, Swift-BAT and 2MRS catalogues, and the sample of 17 AGNs, respectively.
引用
收藏
页码：2765 / 2778
页数：14
相关论文
共 50 条
  • [21] LARGE-SCALE DISTRIBUTION OF ARRIVAL DIRECTIONS OF COSMIC RAYS DETECTED ABOVE 1018 eV AT THE PIERRE AUGER OBSERVATORY
    Abreu, P.
    Aglietta, M.
    Ahlers, M.
    Ahn, E. J.
    Albuquerque, I. F. M.
    Allard, D.
    Allekotte, I.
    Allen, J.
    Allison, P.
    Almela, A.
    Castillo, J. Alvarez
    Alvarez-Muniz, J.
    Batista, R. Alves
    Ambrosio, M.
    Aminaei, A.
    Anchordoqui, L.
    Andringa, S.
    Antici'c, T.
    Aramo, C.
    Arganda, E.
    Arqueros, F.
    Asorey, H.
    Assis, P.
    Aublin, J.
    Ave, M.
    Avenier, M.
    Avila, G.
    Badescu, A. M.
    Balzer, M.
    Barber, K. B.
    Barbosa, A. F.
    Bardenet, R.
    Barroso, S. L. C.
    Baughman, B.
    Baeuml, J.
    Baus, C.
    Beatty, J. J.
    Becker, K. H.
    Belletoile, A.
    Bellido, J. A.
    BenZvi, S.
    Berat, C.
    Bertou, X.
    Biermann, P. L.
    Billoir, P.
    Blanco, F.
    Blanco, M.
    Bleve, C.
    Bluemer, H.
    Bohacova, M.
    ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2012, 203 (02)
  • [22] Measurement of cosmic ray energy with the Pierre Auger Observatory
    Ridky, Jan
    C2CR07: COLLIDERS TO COSMIC RAYS, 2007, 928 : 39 - 46
  • [23] PHYSICAL CONDITIONS IN NEARBY ACTIVE GALAXIES CORRELATED WITH ULTRA-HIGH-ENERGY COSMIC RAYS DETECTED BY THE PIERRE AUGER OBSERVATORY
    Gureev, Sergey
    Troitsky, Sergey
    INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 2010, 25 (14): : 2917 - 2932
  • [24] Anisotropy studies of ultra-high-energy cosmic rays measured at the Pierre Auger Observatory
    Schultec, Josina
    XVIII INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, 2024,
  • [25] Measurement of the energy spectrum of cosmic rays above 1018 eV using the Pierre Auger Observatory
    Abraham, J.
    Abreu, P.
    Aglietta, M.
    Ahn, E. J.
    Allard, D.
    Allen, J.
    Alvarez-Muniz, J.
    Ambrosio, M.
    Anchordoqui, L.
    Andringa, S.
    Anticic, T.
    Anzalone, A.
    Aramo, C.
    Arganda, E.
    Arisaka, K.
    Arqueros, F.
    Asorey, H.
    Assis, P.
    Aublin, J.
    Ave, M.
    Avila, G.
    Baecker, T.
    Badagnani, D.
    Balzer, M.
    Barber, K. B.
    Barbosa, A. F.
    Barroso, S. L. C.
    Baughman, B.
    Bauleo, P.
    Beatty, J. J.
    Becker, B. R.
    Becker, K. H.
    Belletoile, A.
    Bellido, J. A.
    BenZvi, S.
    Berat, C.
    Bergmann, T.
    Bertou, X.
    Biermann, P. L.
    Billoir, P.
    Blanch-Bigas, O.
    Blanco, F.
    Blanco, M.
    Bleve, C.
    Bluemer, H.
    Bohacova, M.
    Boncioli, D.
    Bonifazi, C.
    Bonino, R.
    Borodai, N.
    PHYSICS LETTERS B, 2010, 685 (4-5) : 239 - 246
  • [26] SEARCHES FOR LARGE-SCALE ANISOTROPY IN THE ARRIVAL DIRECTIONS OF COSMIC RAYS DETECTED ABOVE ENERGY OF 1019 eV AT THE PIERRE AUGER OBSERVATORY AND THE TELESCOPE ARRAY
    Aab, A.
    Abreu, P.
    Aglietta, M.
    Ahn, E. J.
    Al Samarai, I.
    Albuquerque, I. F. M.
    Allekotte, I.
    Allen, J.
    Allison, P.
    Almela, A.
    Alvarez Castillo, J.
    Alvarez-Muniz, J.
    Batista, R. Alves
    Ambrosio, M.
    Aminaei, A.
    Anchordoqui, L.
    Andringa, S.
    Aramo, C.
    Arqueros, F.
    Asorey, H.
    Assis, P.
    Aublin, J.
    Ave, M.
    Avenier, M.
    Avila, G.
    Badescu, A. M.
    Barber, K. B.
    Baeuml, J.
    Baus, C.
    Beatty, J. J.
    Becker, K. H.
    Bellido, J. A.
    Berat, C.
    Bertaina, M. E.
    Bertou, X.
    Biermann, P. L.
    Billoir, P.
    Blanco, M.
    Bleve, C.
    Bluemer, H.
    Bohacova, M.
    Boncioli, D.
    Bonifazi, C.
    Bonino, R.
    Borodai, N.
    Brack, J.
    Brancus, I.
    Brogueira, P.
    Brown, W. C.
    Buchholz, P.
    ASTROPHYSICAL JOURNAL, 2014, 794 (02)
  • [27] Ultra high energy cosmic rays and the Auger Observatory
    Letessier-Selvon, A
    XXV PHYSICS IN COLLISION, PROCEEDINGS, 2006, 815 : 73 - 84
  • [28] The Pierre Auger Cosmic Ray Observatory
    Aab, A.
    Abreu, P.
    Aglietta, M.
    Ahn, E. J.
    Al Samarai, I.
    Albert, J. N.
    Albuquerque, I. F. M.
    Allekotte, I.
    Allen, J.
    Allison, P.
    Almela, A.
    Alvarez Castillo, J.
    Alvarez-Muniz, J.
    Batista, R. Alves
    Ambrosio, M.
    Aminaei, A.
    Anchordoqui, L.
    Andringa, S.
    Aramo, C.
    Aranda, V. M.
    Argiro, S.
    Arisaka, K.
    Arneodo, F.
    Arqueros, F.
    Asch, T.
    Asorey, H.
    Assis, P.
    Aublin, J.
    Ave, M.
    Avenier, M.
    Avila, G.
    Awal, N.
    Badescu, A. M.
    Balzer, M.
    Barber, K. B.
    Barbosa, A.
    Barenthien, N.
    Barkhausen, M.
    Baeuml, J.
    Baus, C.
    Beatty, J.
    Becker, K. H.
    Bellido, J. A.
    BenZvi, S.
    Berat, C.
    Bergmann, T.
    Bertaina, M. E.
    Biermann, P. L.
    Bilhaut, R.
    Billoir, P.
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2015, 798 : 172 - 213
  • [29] Anisotropies in the arrival directions of ultra-high-energy cosmic rays measured at the Pierre Auger Observatory
    Bister, Teresa
    PHYSICA SCRIPTA, 2021, 96 (07)
  • [30] The scaler mode in the Pierre Auger Observatory to study heliospheric modulation of cosmic rays
    Dasso, S.
    Asorey, H.
    ADVANCES IN SPACE RESEARCH, 2012, 49 (11) : 1563 - 1569
12345