{"id":22,"date":"2021-01-11T18:10:24","date_gmt":"2021-01-11T18:10:24","guid":{"rendered":"https:\/\/pages.lip.pt\/auger\/?page_id=22"},"modified":"2021-04-28T10:41:12","modified_gmt":"2021-04-28T10:41:12","slug":"physics-results","status":"publish","type":"page","link":"https:\/\/pages.lip.pt\/auger\/physics-results\/","title":{"rendered":"Physics Results"},"content":{"rendered":"\n<p><strong>The analysis of the Auger data has shown that the highest energy cosmic rays are charged particles, that come from outside our galaxy, and that there is a sharp fall of the flux at E ~ 40 EeV. On the other hand, it has shown that the shower models extrapolating the existing data from particle accelerators do not match what is seen in these highest energy cosmic ray data.<\/strong><\/p>\n\n\n\n<p><a rel=\"noreferrer noopener\" href=\"https:\/\/www.auger.org\/index.php\/science\/journal-articles\" target=\"_blank\"><strong>Full list of Auger papers<\/strong><\/a>&nbsp;<\/p>\n\n\n\n<p><a rel=\"noreferrer noopener\" href=\"https:\/\/www.auger.org\/index.php\/science\/icrc-papers\" target=\"_blank\"><strong>Updated results to the International Cosmic Ray Conference<\/strong><\/a>&nbsp;<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p class=\"has-normal-font-size\"><p><strong>Selected Results on<\/strong><\/p><\/p>\n\n\n<p><!-- wp:paragraph--><\/p>\n<div id=\"Multi-messenger-link-22\" class=\"sh-link Multi-messenger-link sh-hide\"><a href=\"#\" onclick=\"showhide_toggle('Multi-messenger', 22, ' (show) Multi-messenger Astronomy and Astrophysics', '(hide) Multi-messenger Astronomy and Astrophysics'); return false;\" aria-expanded=\"false\"><span id=\"Multi-messenger-toggle-22\"> (show) Multi-messenger Astronomy and Astrophysics<\/span><\/a><\/div><div id=\"Multi-messenger-content-22\" class=\"sh-content Multi-messenger-content sh-hide\" style=\"display: none;\"><\/p>\n<p><!-- \/wp:post-content --><\/p>\n<p><!-- wp:paragraph--><\/p>\n<p class=\"\"><strong>Multi-Messenger Physics with the Pierre Auger Observatory<\/strong><br \/>The Pierre Auger Collaboration, Front. Astron. Space Sci. 6:24 (2019)<br \/>[<a href=\"https:\/\/arxiv.org\/abs\/1904.11918\" target=\"_blank\" rel=\"noreferrer noopener\">arxiv.org\/abs\/1904.11918<\/a>] [<a href=\"https:\/\/doi.org\/10.3389\/fspas.2019.00024\" target=\"_blank\" rel=\"noreferrer noopener\">doi: 10.3389\/fspas.2019.00024 <\/a>]<\/p>\n<p><strong>Search for High-Energy Neutrinos from Binary Neutron Star Merger GW170817 with ANTARES, IceCube, and the Pierre Auger Observatory<\/strong><br \/>ANTARES Collaboration, IceCube Collaboration, The Pierre Auger Collaboration, and LIGO Scientific Collaboration and Virgo Collaboration, The Astrophysical Journal Letters, 850:L35, 2017 | [<a href=\"https:\/\/arxiv.org\/abs\/1710.05839\" target=\"_blank\" rel=\"noreferrer noopener\">arXiv: 1710.05839<\/a>] [<a href=\"http:\/\/iopscience.iop.org\/article\/10.3847\/2041-8213\/aa9aed\" target=\"_blank\" rel=\"noreferrer noopener\">iopscience\/10.3847\/2041-8213\/aa9aed<\/a>]<\/p>\n<p><strong>Observation of a Large-scale Anisotropy in the Arrival Directions of Cosmic Rays above 8\u00d71018\u00a0eV<\/strong><br \/>The Pierre Auger Collaboration, Science 357 (2017) |\u00a0[<a href=\"https:\/\/doi.org\/10.1126\/science.aan4338\" target=\"_blank\" rel=\"noreferrer noopener\">doi: 10.1126\/science.aan4338<\/a>] [<a href=\"https:\/\/arxiv.org\/abs\/1709.07321\" target=\"_blank\" rel=\"noreferrer noopener\">arXiv: 1709.07321<\/a>]<\/p>\n<p><strong>Search for correlations between the arrival directions of IceCube neutrino events and ultrahigh-energy cosmic rays detected by the Pierre Auger Observatory and the Telescope Array<\/strong><br \/>The Pierre Auger Collaboration, Telescope Array Collaboration, IceCube Collaboration JCAP 01 (2016) 037<br \/>[<a href=\"http:\/\/arxiv.org\/ct?url=http%3A%2F%2Fdx.doi.org%2F10%252E1088%2F1475-7516%2F2016%2F01%2F037&amp;v=6c708669\" target=\"_blank\" rel=\"noreferrer noopener\">doi: 10.1088\/1475-7516\/2016\/01\/037<\/a>] [<a href=\"http:\/\/arxiv.org\/abs\/1511.09408v2\" target=\"_blank\" rel=\"noreferrer noopener\">arXiv: 1511.09408<\/a>]<\/p>\n<p><strong>Large scale distribution of ultra high energy cosmic rays detected at the Pierre Auger Observatory with zenith angles up to 80 degrees<\/strong><br \/>The Pierre Auger Collaboration, ApJ 802, 111 (2015) |\u00a0[<a href=\"http:\/\/arxiv.org\/ct?url=http%3A%2F%2Fdx.doi.org%2F10%252E1088%2F0004-637X%2F802%2F2%2F111&amp;v=52b07d05\" target=\"_blank\" rel=\"noreferrer noopener\">doi: 10.1088\/0004-637X\/802\/2\/111<\/a>] [<a href=\"http:\/\/arxiv.org\/abs\/1411.6953v3\" target=\"_blank\" rel=\"noreferrer noopener\">arXiv: 1411.6953<\/a>]<\/div>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<div id=\"Charged-Neutral-link-22\" class=\"sh-link Charged-Neutral-link sh-hide\"><a href=\"#\" onclick=\"showhide_toggle('Charged-Neutral', 22, ' (show) Charged and Neutral Cosmic Rays', ' (hide) Charged and Neutral Cosmic Rays'); return false;\" aria-expanded=\"false\"><span id=\"Charged-Neutral-toggle-22\"> (show) Charged and Neutral Cosmic Rays<\/span><\/a><\/div><div id=\"Charged-Neutral-content-22\" class=\"sh-content Charged-Neutral-content sh-hide\" style=\"display: none;\"><\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><strong>Search for photons with energies above 1018\u00a0eV using the hybrid detector of the Pierre Auger Observatory<\/strong><br \/>The Pierre Auger Collaboration, JCAP 04 (2017) 009 |\u00a0[<a href=\"http:\/\/dx.doi.org\/10.1088\/1475-7516\/2017\/04\/009\" target=\"_blank\" rel=\"noreferrer noopener\">doi: 10.1088\/1475-7516\/2017\/04\/009<\/a>] [<a href=\"http:\/\/arxiv.org\/abs\/1612.01517\" target=\"_blank\" rel=\"noreferrer noopener\">arXiv: 1612.01517<\/a>]<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><strong>Combined fit of spectrum and composition data as measured by the Pierre Auger Observatory<\/strong><br \/>The Pierre Auger Collaboration, JCAP 04 (2017) 038 |\u00a0[<a href=\"https:\/\/doi.org\/10.1088\/1475-7516\/2017\/04\/038\" target=\"_blank\" rel=\"noreferrer noopener\">doi: 10.1088\/1475-7516\/2017\/04\/038<\/a>] [<a href=\"http:\/\/arxiv.org\/abs\/1612.07155\" target=\"_blank\" rel=\"noreferrer noopener\">arXiv: 1612.07155<\/a>]<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><strong>Evidence for a mixed mass composition at the &#8216;ankle&#8217; in the cosmic-ray spectrum<\/strong><br \/>The Pierre Auger Collaboration, Phys.Lett. B762 (2016) 288-295 |\u00a0[<a href=\"https:\/\/doi.org\/10.1016\/j.physletb.2016.09.039\" target=\"_blank\" rel=\"noreferrer noopener\">doi: 10.1016\/j.physletb.2016.09.039<\/a>] [<a href=\"http:\/\/arxiv.org\/abs\/1609.08567\" target=\"_blank\" rel=\"noreferrer noopener\">arxiv: 1609.08567<\/a>]<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><strong>Measurement of the cosmic ray spectrum above 4\u00d710^18 eV using inclined events detected with the Pierre Auger Observatory<\/strong><br \/>The Pierre Auger Collaboration, JCAP 08 (2015) 049 | [<a href=\"http:\/\/arxiv.org\/ct?url=http%3A%2F%2Fdx.doi.org%2F10%252E1088%2F1475-7516%2F2015%2F08%2F049&amp;v=915a0bb0\" target=\"_blank\" rel=\"noreferrer noopener\">doi: 10.1088\/1475-7516\/2015\/08\/049<\/a>] [<a href=\"http:\/\/arxiv.org\/abs\/1503.07786v2\" target=\"_blank\" rel=\"noreferrer noopener\">arXiv: 1503.07786<\/a>]<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><strong>An improved limit to the diffuse flux of ultra-high energy neutrinos from the Pierre Auger Observatory<\/strong><br \/>The Pierre Auger Collaboration, Phys. Rev. D 91, 092008 (2015) |\u00a0[<a href=\"http:\/\/arxiv.org\/ct?url=http%3A%2F%2Fdx.doi.org%2F10%252E1103%2FPhysRevD%252E91%252E092008&amp;v=396011b5\" target=\"_blank\" rel=\"noreferrer noopener\">doi: 10.1103\/PhysRevD.91.092008<\/a>] [<a href=\"http:\/\/arxiv.org\/abs\/1504.05397v2\" target=\"_blank\" rel=\"noreferrer noopener\">arXiv: 1504.05397<\/a>]<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><strong>A Targeted Search for Point Sources of EeV Neutrons<\/strong><br \/>The Pierre Auger Collaboration, ApJ, 789 (2014) L34 |\u00a0[<a href=\"http:\/\/arxiv.org\/ct?url=http%3A%2F%2Fdx.doi.org%2F10%252E1088%2F2041-8205%2F789%2F2%2FL34&amp;v=c84fae95\" target=\"_blank\" rel=\"noreferrer noopener\">doi:10.1088\/2041-8205\/789\/2\/L34<\/a>] [<a href=\"http:\/\/arxiv.org\/abs\/1406.4038v1\" target=\"_blank\" rel=\"noreferrer noopener\">arXiv:1406.4038<\/a>] <\/div>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<div id=\"Particle-Physics-link-22\" class=\"sh-link Particle-Physics-link sh-hide\"><a href=\"#\" onclick=\"showhide_toggle('Particle-Physics', 22, ' (show) &lt;strong&gt;Particle Physics at Ultra High Energies&lt;\/strong&gt;', ' (hide) &lt;strong&gt;Particle Physics at Ultra High Energies&lt;\/strong&gt;'); return false;\" aria-expanded=\"false\"><span id=\"Particle-Physics-toggle-22\"> (show) &lt;strong&gt;Particle Physics at Ultra High Energies&lt;\/strong&gt;<\/span><\/a><\/div><div id=\"Particle-Physics-content-22\" class=\"sh-content Particle-Physics-content sh-hide\" style=\"display: none;\"><\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p class=\"title mathjax\"><strong>Measurement of the fluctuations in the number of muons in extensive air showers with the Pierre Auger Observatory <\/strong>The Pierre Auger Collaboration, PRL 152002 (2021) | [<a href=\"http:\/\/doi.org\/10.1103\/PhysRevLett.126.152002\">doi: 10.1103\/PhysRevLett.126.152002<\/a>][<a href=\"http:\/\/arxiv.org\/abs\/2102.07797\">arXiv:2102.07797<\/a>] <\/p>\n<p><strong>Testing hadronic interactions at ultrahigh energies with air showers measured by the Pierre Auger Observatory<\/strong><br \/>The Pierre Auger Collaboration, PRL 117, 192001 (2016) | [<a href=\"https:\/\/doi.org\/10.1103\/PhysRevLett.117.192001\" target=\"_blank\" rel=\"noreferrer noopener\">doi: 10.1103\/PhysRevLett.117.192001<\/a>] [<a href=\"http:\/\/arxiv.org\/abs\/1610.08509\">arXiv: 1610.08509<\/a>]; <a href=\"http:\/\/physics.aps.org\/articles\/v9\/125\" target=\"_blank\" rel=\"noreferrer noopener\"><em>Editors suggestion<\/em><\/a><\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><strong>Search for Ultra-relativistic Magnetic Monopoles with the Pierre Auger Observatory<\/strong><br \/><em>The Pierre Auger Collaboration, Phys. Rev. D 94, 082002 (2016) <\/em>| [<a href=\"http:\/\/dx.doi.org\/10.1103\/PhysRevD.94.082002\" target=\"_blank\" rel=\"noreferrer noopener\">doi: 10.1103\/PhysRevD.94.082002<\/a>] [<a href=\"http:\/\/arxiv.org\/abs\/1609.04451\" target=\"_blank\" rel=\"noreferrer noopener\">arXiv: 1609.04451<\/a>]<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><strong>Muons in air showers at the Pierre Auger Observatory: mean number in highly inclined events<\/strong><br \/>The Pierre Auger Collaboration, Physical Review D 91, 032003 (2015); ERRATA: Phys. Rev. D 91, 059901 (2015)<br \/>[<a href=\"http:\/\/arxiv.org\/ct?url=http%3A%2F%2Fdx.doi.org%2F10%252E1103%2FPhysRevD%252E91%252E032003&amp;v=bf93dfdb\" target=\"_blank\" rel=\"noreferrer noopener\">doi: 10.1103\/PhysRevD.91.032003<\/a>] [<a href=\"http:\/\/arxiv.org\/abs\/1408.1421v6\" target=\"_blank\" rel=\"noreferrer noopener\">arXiv: 1408.1421<\/a>]<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><strong>Depth of Maximum of Air-Shower Profiles at the Auger Observatory: Measurements at Energies above 1017.8\u00a0eV<\/strong><br \/>The Pierre Auger Collaboration, Physical Review D 90, 122005 (2014) |\u00a0[<a href=\"http:\/\/arxiv.org\/ct?url=http%3A%2F%2Fdx.doi.org%2F10%252E1103%2FPhysRevD%252E90%252E122005&amp;v=6f37a4c6\" target=\"_blank\" rel=\"noreferrer noopener\">doi: 10.1103\/PhysRevD.90.122005<\/a>] [<a href=\"http:\/\/arxiv.org\/abs\/1409.4809v3\" target=\"_blank\" rel=\"noreferrer noopener\">arXiv: 1409.4809<\/a>]<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><strong>Muons in air showers at the Pierre Auger Observatory: Measurement of atmospheric production depth<\/strong><br \/>The Pierre Auger Collaboration, Physical Review D 90, 012012 (2014); ERRATA: Phys. Rev. D 90, 039904(E) (2014); ERRATA: Phys. Rev. D 92, 019903 (2015)<br \/>[<a href=\"http:\/\/arxiv.org\/ct?url=http%3A%2F%2Fdx.doi.org%2F10%252E1103%2FPhysRevD%252E90%252E012012&amp;v=b0594527\" target=\"_blank\" rel=\"noreferrer noopener\">doi:10.1103\/PhysRevD.90.012012<\/a>] [<a href=\"http:\/\/arxiv.org\/abs\/1407.5919v2\" target=\"_blank\" rel=\"noreferrer noopener\">arXiv:1407.5919<\/a>]<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><strong>Interpretation of the Depths of Maximum of Extensive Air Showers Measured by the Pierre Auger Observatory<\/strong><br \/>The Pierre Auger Collaboration, JCAP 02 (2013) 026 | [<a href=\"http:\/\/arxiv.org\/ct?url=http%3A%2F%2Fdx.doi.org%2F10%252E1088%2F1475-7516%2F2013%2F02%2F026&amp;v=3ee85d4c\" target=\"_blank\" rel=\"noreferrer noopener\">doi:10.1088\/1475-7516\/2013\/02\/026<\/a>] [<a href=\"http:\/\/arxiv.org\/abs\/1301.6637v2\" target=\"_blank\" rel=\"noreferrer noopener\">arXiv:1301.6637<\/a>]<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><strong>Measurement of the proton-air cross-section at sqrt(s) = 57 TeV with the Pierre Auger Observatory<\/strong><br \/>The Pierre Auger Collaboration, Phys. Rev. Lett. 109, 062002 (2012) |\u00a0[<a href=\"http:\/\/arxiv.org\/ct?url=http%3A%2F%2Fdx.doi.org%2F10%252E1103%2FPhysRevLett%252E109%252E062002&amp;v=5800618d\" target=\"_blank\" rel=\"noreferrer noopener\">doi:!0.1103\/PhysRevLett.109.062002<\/a>] [<a href=\"http:\/\/arxiv.org\/abs\/1208.1520v2\" target=\"_blank\" rel=\"noreferrer noopener\">arXiv:1208.1520<\/a>] <\/div>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<div id=\"Detector-R-D-link-22\" class=\"sh-link Detector-R-D-link sh-hide\"><a href=\"#\" onclick=\"showhide_toggle('Detector-R-D', 22, ' (show) Cosmic Ray Detection and R&amp;D', ' (hide) Cosmic Ray Detection and R&amp;D'); return false;\" aria-expanded=\"false\"><span id=\"Detector-R-D-toggle-22\"> (show) Cosmic Ray Detection and R&amp;D<\/span><\/a><\/div><div id=\"Detector-R-D-content-22\" class=\"sh-content Detector-R-D-content sh-hide\" style=\"display: none;\"><\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><strong>The Pierre Auger Observatory and its Upgrade<\/strong><br \/>The Pierre Auger Collaboration, Science Reviews &#8211; from the end of the world (Argentina) Vol. 1, No. 4, September 2020 \/\/ pp. 8-33<br \/>[<a href=\"http:\/\/scirevfew.net\/index.php\/sciencereviews\/issue\/view\/4\" target=\"_blank\" rel=\"noreferrer noopener\">Science Reviews<\/a>]<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><strong>Features of the energy spectrum of cosmic rays above 2.5 x 10^18 eV using the Pierre Auger Observatory<\/strong><br \/>The Pierre Auger Collaboration, Phys. Rev. Lett. 125, 121106 (2020)<br \/>[<a href=\"http:\/\/arxiv.org\/abs\/2008.06488\" target=\"_blank\" rel=\"noreferrer noopener\">arxiv.org\/abs\/2008.06488<\/a>] [<a href=\"https:\/\/dx.doi.org\/10.1103\/PhysRevLett.125.121106\" target=\"_blank\" rel=\"noreferrer noopener\">doi: 10.1103\/PhysRevLett.125.121106<\/a>]<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><strong>Measurement of the cosmic ray energy spectrum above 2.5 x 10^18 eV using the Pierre Auger Observatory<\/strong><br \/>The Pierre Auger Collaboration, Phys. Rev. D 102, 062005 (2020)<br \/>[<a href=\"http:\/\/arxiv.org\/abs\/2008.06486\" target=\"_blank\" rel=\"noreferrer noopener\">arxiv.org\/abs\/2008.06486<\/a>] [<a href=\"https:\/\/dx.doi.org\/10.1103\/PhysRevD.102.062005\" target=\"_blank\" rel=\"noreferrer noopener\">doi: 10.1103\/PhysRevD.102.062005<\/a>]<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:separator --><\/p>\n<hr class=\"wp-block-separator\" \/><!-- \/wp:separator -->\n<p>\u00a0<\/p>\n<p><!-- wp:paragraph  --><\/p>\n<p><strong>Studies on the response of a water-Cherenkov detector of the Pierre Auger Observatory to atmospheric muons using an RPC hodoscope<\/strong><br \/>The Pierre Auger Collaboration, JINST 15 (2020) P09002<br \/>[<a href=\"http:\/\/arxiv.org\/abs\/2007.04139\" target=\"_blank\" rel=\"noreferrer noopener\">arxiv.org\/abs\/2007.04139<\/a>] [<a href=\"https:\/\/doi.org\/10.1088\/1748-0221\/15\/09\/P09002\" target=\"_blank\" rel=\"noreferrer noopener\">doi: 10.1088\/1748-0221\/15\/09\/P09002<\/a>]<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><strong>Measurement of the average shape of longitudinal profiles of cosmic ray air-showers at the Pierre Auger Observatory<\/strong><br \/>The Pierre Auger Collaboration, JCAP03(2019)018<br \/>[<a href=\"https:\/\/arxiv.org\/abs\/1811.04660\" target=\"_blank\" rel=\"noreferrer noopener\">arxiv.org\/abs\/1811.04660<\/a>] [<a href=\"https:\/\/doi.org\/10.1088\/1475-7516\/2019\/03\/018\" target=\"_blank\" rel=\"noreferrer noopener\">doi: 10.1088\/1475-7516\/2019\/03\/018<\/a>]<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><strong>Energy Estimation of Cosmic Rays with the Engineering Radio Array of the Pierre Auger Observatory<\/strong><br \/>The Pierre Auger Collaboration, Phys. Rev. D 93, 122005 (2016) | [<a href=\"http:\/\/arxiv.org\/abs\/1604.00978\" target=\"_blank\" rel=\"noreferrer noopener\">arXiv: 1508.04267<\/a>] [<a href=\"http:\/\/dx.doi.org\/10.1103\/PhysRevD.93.122005\" target=\"_blank\" rel=\"noreferrer noopener\">doi: 10.1103\/PhysRevD.93.122005<\/a>]<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><strong>Measurement of the radiation energy in the radio signal of extensive air showers as a universal estimator of cosmic-ray energy<\/strong><br \/>The Pierre Auger Collaboration, PRL 116, 241101 (2016) |\u00a0[<a href=\"http:\/\/arxiv.org\/abs\/1605.02564\" target=\"_blank\" rel=\"noreferrer noopener\">arXiv: 1605.02564<\/a>] [<a href=\"http:\/\/dx.doi.org\/10.1103\/PhysRevLett.116.241101\" target=\"_blank\" rel=\"noreferrer noopener\">doi: 10.1103\/PhysRevLett.116.241101<\/a>] <\/div>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><strong><div id=\"Others-link-22\" class=\"sh-link Others-link sh-hide\"><a href=\"#\" onclick=\"showhide_toggle('Others', 22, ' (show) Other Publications by the Auger-LIP group', ' (hide) Other Publications by the Auger-LIP group'); return false;\" aria-expanded=\"false\"><span id=\"Others-toggle-22\"> (show) Other Publications by the Auger-LIP group<\/span><\/a><\/div><div id=\"Others-content-22\" class=\"sh-content Others-content sh-hide\" style=\"display: none;\"><\/strong><\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><strong>Constraining the energy spectrum of neutral pions in ultra-high-energy<br \/>proton-air interactions<\/strong> L. Cazon, R. Concei\u00e7\u00e3o, M. A. Martins and F. Riehn, Phys. Rev. D (2021)<strong> 103,<\/strong> 022001 | <a href=\"https:\/\/arxiv.org\/abs\/2006.11303\" target=\"_blank\" rel=\"noreferrer noopener\">[<\/a><a href=\"https:\/\/arxiv.org\/abs\/2006.11303\">arxiv:2006.11303<\/a>][<a href=\"https:\/\/link.aps.org\/doi\/10.1103\/PhysRevD.103.022001\">doi:10.1103\/PhysRevD.103.022001<\/a>]<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><strong>Marta: a high energy cosmic-ray detector concept for high-accuracy muon measurement<\/strong><br \/>P. Abreu et al, Eur. Phys. J. C (2018) 78:333 | [<a href=\"http:\/\/arxiv.org\/abs\/1712.07685\" target=\"_blank\" rel=\"noreferrer noopener\">arXiv: 1712.07685<\/a>] | [<a href=\"https:\/\/doi.org\/10.1140\/epjc\/s10052-018-5820-2\" target=\"_blank\" rel=\"noreferrer noopener\">doi:10.1140\/epjc\/s10052-018-5820-2<\/a>]<\/p>\n<p><!-- \/wp:paragraph --><\/p>\n<p><!-- wp:paragraph --><\/p>\n<p><strong>Probing the energy spectrum of hadrons in proton air interactions at ultra high energies through the fluctuations of the muon content of extensive air showers<\/strong><br \/>L. Cazon, R. Concei\u00e7\u00e3o and F. Riehn, Phys. Let. B 784, 68-76(2018)\u00a0 | [<a href=\"http:\/\/arxiv.org\/abs\/1803.05699\" target=\"_blank\" rel=\"noreferrer noopener\">arXiv: 1803.05699<\/a>] | [<a href=\"https:\/\/doi.org\/10.1016\/j.physletb.2018.07.026\" target=\"_blank\" rel=\"noreferrer noopener\">doi:10.1016\/j.physletb.2018.07.026<\/a>]<\/p>\n<p><\/div><\/p>\n<p><!-- \/wp:paragraph --><\/p>","protected":false},"excerpt":{"rendered":"<p>The analysis of the Auger data has shown that the highest energy cosmic rays are charged particles, that come from outside our galaxy, and that there is a sharp fall of the flux at E ~ 40 EeV. On the other hand, it has shown that the shower models extrapolating the existing data from particle &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/pages.lip.pt\/auger\/physics-results\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Physics Results&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-22","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/pages.lip.pt\/auger\/wp-json\/wp\/v2\/pages\/22","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pages.lip.pt\/auger\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/pages.lip.pt\/auger\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/pages.lip.pt\/auger\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/pages.lip.pt\/auger\/wp-json\/wp\/v2\/comments?post=22"}],"version-history":[{"count":23,"href":"https:\/\/pages.lip.pt\/auger\/wp-json\/wp\/v2\/pages\/22\/revisions"}],"predecessor-version":[{"id":227,"href":"https:\/\/pages.lip.pt\/auger\/wp-json\/wp\/v2\/pages\/22\/revisions\/227"}],"wp:attachment":[{"href":"https:\/\/pages.lip.pt\/auger\/wp-json\/wp\/v2\/media?parent=22"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}