利用 IceCube 天文台探测极高能中微子以研究宇宙线起源
高能天体物理现象
2015-06-17 v2 宇宙学与河外天体物理
高能物理 - 实验
摘要
我们利用 IceCube 探测器在 2010 年 5 月至 2012 年 5 月期间采集的数据，搜寻了极高能中微子。正如先前报道的那样，观测到了两个能量约为 1 PeV 的中微子诱发的粒子簇射事例。在本工作中，我们研究了这些事例是否可能源自宇宙线在星际空间传播过程中与背景光子相互作用产生的宇宙成因中微子（cosmogenic neutrinos）。利用 IceCube 对极高能中微子的大曝光量以及未观测到高于 100 PeV 事例的事实，我们可以以超过 90% 的置信度排除相应的模型。与模型无关的准微分 90% 置信度上限为 GeV cm s sr（在 1 EeV 处），这提供了从 10 PeV 到 10 EeV 能量范围内最严格的限制。我们的观测结果不支持最高能宇宙线源（如 Fanaroff-Riley II 类射电星系）存在强烈的宇宙学演化。
引用
@article{arxiv.1310.5477,
title = {Probing the origin of cosmic-rays with extremely high energy neutrinos using the IceCube Observatory},
author = {IceCube Collaboration and M. G. Aartsen and R. Abbasi and M. Ackermann and J. Adams and J. A. Aguilar and M. Ahlers and D. Altmann and C. Arguelles and J. Auffenberg and X. Bai and M. Baker and S. W. Barwick and V. Baum and R. Bay and J. J. Beatty and J. Becker Tjus and K. -H. Becker and S. BenZvi and P. Berghaus and D. Berley and E. Bernardini and A. Bernhard and D. Z. Besson and G. Binder and D. Bindig and M. Bissok and E. Blaufuss and J. Blumenthal and D. J. Boersma and C. Bohm and D. Bose and S. Böser and O. Botner and L. Brayeur and H. -P. Bretz and A. M. Brown and R. Bruijn and J. Casey and M. Casier and D. Chirkin and A. Christov and B. Christy and K. Clark and F. Clevermann and S. Coenders and S. Cohen and D. F. Cowen and A. H. Cruz Silva and M. Danninger and J. Daughhetee and J. C. Davis and M. Day and C. De Clercq and S. De Ridder and P. Desiati and K. D. de Vries and M. de With and T. DeYoung and J. C. Díaz-Vélez and M. Dunkman and R. Eagan and B. Eberhardt and J. Eisch and S. Euler and P. A. Evenson and O. Fadiran and A. R. Fazely and A. Fedynitch and J. Feintzeig and T. Feusels and K. Filimonov and C. Finley and T. Fischer-Wasels and S. Flis and A. Franckowiak and K. Frantzen and T. Fuchs and T. K. Gaisser and J. Gallagher and L. Gerhardt and L. Gladstone and T. Glüsenkamp and A. Goldschmidt and G. Golup and J. G. Gonzalez and J. A. Goodman and D. Góra and D. T. Grandmont and D. Grant and P. Gretskov and J. C. Groh and A. Groß and C. Ha and A. Haj Ismail and P. Hallen and A. Hallgren and F. Halzen and K. Hanson and D. Heereman and D. Heinen and K. Helbing and R. Hellauer and S. Hickford and G. C. Hill and K. D. Hoffman and R. Hoffmann and A. Homeier and K. Hoshina and W. Huelsnitz and P. O. Hulth and K. Hultqvist and S. Hussain and A. Ishihara and E. Jacobi and J. Jacobsen and K. Jagielski and G. S. Japaridze and K. Jero and O. Jlelati and B. Kaminsky and A. Kappes and T. Karg and A. Karle and M. Kauer and J. L. Kelley and J. Kiryluk and J. Kläs and S. R. Klein and J. -H. Köhne and G. Kohnen and H. Kolanoski and L. Köpke and C. Kopper and S. Kopper and D. J. Koskinen and M. Kowalski and M. Krasberg and A. Kriesten and K. Krings and G. Kroll and J. Kunnen and N. Kurahashi and T. Kuwabara and M. Labare and H. Landsman and M. J. Larson and M. Lesiak-Bzdak and M. Leuermann and J. Leute and J. Lünemann and O. Macías and J. Madsen and G. Maggi and R. Maruyama and K. Mase and H. S. Matis and F. McNally and K. Meagher and M. Merck and T. Meures and S. Miarecki and E. Middell and N. Milke and J. Miller and L. Mohrmann and T. Montaruli and R. Morse and R. Nahnhauer and U. Naumann and H. Niederhausen and S. C. Nowicki and D. R. Nygren and A. Obertacke and S. Odrowski and A. Olivas and A. Omairat and A. O'Murchadha and L. Paul and J. A. Pepper and C. Pérez de los Heros and C. Pfendner and D. Pieloth and D. Pieloth and E. Pinat and J. Posselt and P. B. Price and G. T. Przybylski and L. Rädel and M. Rameez and K. Rawlins and P. Redl and R. Reimann and E. Resconi and W. Rhode and M. Ribordy and M. Richman and B. Riedel and J. P. Rodrigues and C. Rott and T. Ruhe and B. Ruzybayev and D. Ryckbosch and S. M. Saba and H. -G. Sander and M. Santander and S. Sarkar and K. Schatto and F. Scheriau and T. Schmidt and M. Schmitz and S. Schoenen and S. Schöneberg and A. Schönwald and A. Schukraft and L. Schulte and O. Schulz and D. Seckel and Y. Sestayo and S. Seunarine and R. Shanidze and C. Sheremata and M. W. E. Smith and D. Soldin and G. M. Spiczak and C. Spiering and M. Stamatikos and T. Stanev and N. A. Stanisha and A. Stasik and T. Stezelberger and R. G. Stokstad and A. Stößl and E. A. Strahler and R. Ström and G. W. Sullivan and H. Taavola and I. Taboada and A. Tamburro and A. Tepe and S. Ter-Antonyan and G. Tešić and S. Tilav and P. A. Toale and M. N. Tobin and S. Toscano and E. Unger and M. Usner and S. Vallecorsa and N. van Eijndhoven and A. Van Overloop and J. van Santen and M. Vehring and M. Voge and M. Vraeghe and C. Walck and T. Waldenmaier and M. Wallraff and Ch. Weaver and M. Wellons and C. Wendt and S. Westerhoff and N. Whitehorn and K. Wiebe and C. H. Wiebusch and D. R. Williams and H. Wissing and M. Wolf and T. R. Wood and K. Woschnagg and D. L. Xu and X. W. Xu and J. P. Yanez and G. Yodh and S. Yoshida and P. Zarzhitsky and J. Ziemann and S. Zierke and M. Zoll},
journal= {arXiv preprint arXiv:1310.5477},
year = {2015}
}
备注
A follow-up analysis to the report published in PRL 111 (2013) 021103. 15 pages, 9 figures, 5 tables, the version accepted for publication in Physical Review D