@misc{10481/78389,
year = {2022},
month = {11},
url = {https://hdl.handle.net/10481/78389},
abstract = {The Pierre Auger Observatory, which is the largest air-shower experiment in the world,
offers unprecedented exposure to neutral particles at the highest energies. Since the start of data
collection more than 18 years ago, various searches for ultra-high-energy (UHE, E & 1017 eV) photons
have been performed, either for a diffuse flux of UHE photons, for point sources of UHE photons or
for UHE photons associated with transient events such as gravitational wave events. In the present
paper, we summarize these searches and review the current results obtained using the wealth of data
collected by the Pierre Auger Observatory.},
organization = {Argentina-Comision Nacional de Energia Atomica},
organization = {ANPCyT},
organization = {Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET)},
organization = {Gobierno de la Provincia de Mendoza},
organization = {Municipalidad de Malargue},
organization = {NDM Holdings},
organization = {Valle Las Lenas},
organization = {Australian Research Council},
organization = {Belgium-Fonds de la Recherche Scientifique (FNRS)},
organization = {FWO},
organization = {Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ)
Fundacao de Apoio a Pesquisa do Distrito Federal (FAPDF)		
Financiadora de Inovacao e Pesquisa (Finep)		
Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio De Janeiro (FAPERJ)		
Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)	2019/10151-2	
2010/07359-6	
1999/05404-3},
organization = {Ministerio da Ciencia, Tecnologia, Inovacoes e Comunicacoes (MCTIC)},
organization = {France-Centre de Calcul IN2P3/CNRS		
Centre National de la Recherche Scientifique (CNRS)		
Region Ile-de-France		
Centre National de la Recherche Scientifique (CNRS)		
Departement Sciences de l'Univers (SDU-INSU/CNRS)		
French National Research Agency (ANR)	LABEX ANR-10-LABX-63	
ANR-11-IDEX-0004-02},
organization = {Federal Ministry of Education & Research (BMBF)		
German Research Foundation (DFG)		
Finanzministerium Baden-Wurttemberg		
Helmholtz Alliance for Astroparticle Physics (HAP)		
Helmholtz Association		
Ministerium fur Kultur und Wissenschaft des Landes Nordrhein-Westfalen		
Ministerium fur Wissenschaft, Forschung und Kunst des Landes Baden-Wurttemberg},
organization = {Italy-Istituto Nazionale di Fisica Nucleare (INFN)		
Istituto Nazionale Astrofisica (INAF)},
organization = {Ministry of Education, Universities and Research (MIUR)},
organization = {CETEMPS Center of Excellence},
organization = {Ministry of Foreign Affairs and International Cooperation (Italy)},
organization = {Consejo Nacional de Ciencia y Tecnologia (CONACyT)	167733	
Universidad Nacional Autonoma de Mexico		
Programa de Apoyo a Proyectos de Investigacion e Innovacion Tecnologica (PAPIIT)
Universidad Nacional Autonoma de Mexico},
organization = {Netherlands-Ministry of Education, Culture and Science		
Netherlands Organization for Scientific Research (NWO)},
organization = {SURF Cooperative},
organization = {Poland-Ministry of Education and Science	DIR/WK/2018/11	
National Science Centre, Poland	2016/22/M/ST9/00198	
2016/23/B/ST9/01635	
2020/39/B/ST9/01398},
organization = {Portuguese Foundation for Science and Technology		
FEDER funds within Programa Operacional Factores de Competitividade through FundacAo para a Ciencia e a Tecnologia (COMPETE)},
organization = {Romania-Ministry of Research, Innovation and Digitization, CNCS/CCCDI UEFISCDI within the National Nucleus Program	PN19150201/16N/2019	
PN1906010	
PNCDI III	TE128	
PN-III-P1-1.1-TE-2021-0924/TE57/2022	
PED289},
organization = {Slovenian Research Agency - Slovenia	P1-0031	
P1-0385	
I0-0033	
N1-0111},
organization = {Spanish Government	FPA2017-85114-P	
PID2019-104676GB-C32},
organization = {Xunta de Galicia},
organization = {European Commission	ED431C 2017/07},
organization = {Junta de Andalucia	SOMM17/6104/UGR	
P18-FR-4314},
organization = {European Commission},
organization = {RENATA Red Nacional Tematica de Astroparticulas	FPA2015-68783-REDT},
organization = {Maria de Maeztu Unit of Excellence	MDM-2016-0692},
organization = {United States Department of Energy (DOE)	DE-AC02-07CH11359	
DE-FR02-04ER41300	
DE-FG02-99ER41107	
DE-SC0011689},
organization = {National Science Foundation (NSF)	0450696},
organization = {Grainger Foundation},
organization = {Marie Curie-IRSES/EPLANET},
organization = {European Particle Physics Latin American Network},
organization = {UNESCO},
organization = {MSMT CR LTT18004	
LM2015038	
LM2018102	
CZ.02.1.01/0.0/0.0/16_013/0001402	
CZ.02.1.01/0.0/0.0/18_046/0016010	
CZ.02.1.01/0.0/0.0/17_049/0008422},
publisher = {MDPI},
keywords = {Photons},
keywords = {Ultra-high energies},
keywords = {Air showers},
keywords = {Pierre Auger Observatory},
keywords = {Upper limits},
keywords = {Transients},
title = {Searches for Ultra-High-Energy Photons at the Pierre Auger Observatory},
doi = {10.3390/universe8110579},
author = {Abreu, P. and Bueno Villar, Antonio and Pierre Auger Collaboration},
}