@article{aea76e70672646f389d19a7788e29d34,

title = "Erratum: Search for photons with energies above 1018 eV using the hybrid detector of the Pierre Auger Observatory (Journal of Cosmology and Astroparticle Physics (2017) 4 (9) DOI: 10.1088/1475-7516/2017/04/009)",

abstract = "1 Exposure calculation Due to a mistake in the numerical integration following eq. (6.2) of the original article [1], the exposure shown in figure 5 of the original article was incorrect. The correct exposure is shown in figure 1. 2 Upper limits on the integral photon flux and fraction The incorrect exposure affects the calculation of the upper limits on the integral photon flux following eq. (6.1) of the original article. The correct values for the upper limits are 0.038, 0.010, 0.009, 0.008 and 0.007 km−2 sr−1 yr−1 for threshold energies of 1, 2, 3, 5 and 10 EeV. The correct values for the upper limits on the integral photon fraction subsequently derived are 0.14 %, 0.17 %, 0.42 %, 0.86 % and 2.9 % for the same threshold energies. 3 Author list The author list of this erratum also corrects a mistake made in the original article, where F. Zuccarello was missing and Z. Zong was listed twice.",

author = "{Pierre Auger Collaboration} and A. Aab and P. Abreu and M. Aglietta and {Al Samarai}, I. and Albuquerque, {I. F.M.} and I. Allekotte and A. Almela and {Alvarez Castillo}, J. and J. Alvarez-Mu{\~n}iz and Anastasi, {G. A.} and L. Anchordoqui and B. Andrada and S. Andringa and C. Aramo and F. Arqueros and N. Arsene and H. Asorey and P. Assis and J. Aublin and G. Avila and Badescu, {A. M.} and A. Balaceanu and {Barreira Luz}, {R. J.} and Beatty, {J. J.} and Becker, {K. H.} and Bellido, {J. A.} and C. Berat and Bertaina, {M. E.} and X. Bertou and Biermann, {P. L.} and P. Billoir and J. Biteau and Blaess, {S. G.} and A. Blanco and J. Blazek and C. Bleve and M. Boh{\'a}{\v c}ov{\'a} and D. Boncioli and C. Bonifazi and N. Borodai and Botti, {A. M.} and J. Brack and I. Brancus and T. Bretz and A. Bridgeman and Briechle, {F. L.} and P. Buchholz and A. Bueno and S. Coutu and M. Mostaf{\'a}",

note = "Publisher Copyright: {\textcopyright} 2020 The Author(s). Published by IOP Publishing Ltd on behalf of Sissa Medialab.",

year = "2020",

month = sep,

doi = "10.1088/1475-7516/2020/09/E02",

language = "English (US)",

volume = "2020",

journal = "Journal of Cosmology and Astroparticle Physics",

issn = "1475-7516",

publisher = "IOP Publishing Ltd.",

number = "9",

}