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Title: A Targeted Search for Point Sources of EeV Photons with the Pierre Auger Observatory

Abstract

Simultaneous measurements of air showers with the fluorescence and surface detectors of the Pierre Auger Observatory allow a sensitive search for EeV photon point sources. Several Galactic and extragalactic candidate objects are grouped in classes to reduce the statistical penalty of many trials from that of a blind search and are analyzed for a significant excess above the background expectation. The presented search does not find any evidence for photon emission at candidate sources, and combined p -values for every class are reported. Particle and energy flux upper limits are given for selected candidate sources. These limits significantly constrain predictions of EeV proton emission models from non-transient Galactic and nearby extragalactic sources, as illustrated for the particular case of the Galactic center region.

Authors:
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [9];  [10];
  1. Institute for Mathematics, Astrophysics and Particle Physics (IMAPP), Radboud Universiteit, Nijmegen (Netherlands)
  2. Laboratório de Instrumentação e Física Experimental de Partículas—LIP and Instituto Superior Técnico—IST, Universidade de Lisboa—UL, Lisbon (Portugal)
  3. INFN, Sezione di Torino, Torino (Italy)
  4. Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Universités Paris 6 et Paris 7, CNRS-IN2P3, Paris (France)
  5. Universidade de São Paulo, Inst. de Física, São Paulo (Brazil)
  6. Centro Atómico Bariloche and Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche (Argentina)
  7. Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica, Buenos Aires (Argentina)
  8. Universidad Nacional Autónoma de México, México, D. F., México (Mexico)
  9. Universidad de Santiago de Compostela, La Coruña (Spain)
  10. Gran Sasso Science Institute (INFN), L’Aquila (Italy)
Publication Date:
OSTI Identifier:
22654520
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 837; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; AIR; COSMIC RADIATION; COSMIC RAY DETECTION; COSMIC SHOWERS; DATA ANALYSIS; EEV RANGE; FLUORESCENCE; FORECASTING; PARTICLES; PHOTONS; POINT SOURCES; PROTONS; SPACE; SURFACES

Citation Formats

Aab, A., Abreu, P., Aglietta, M., Samarai, I. Al, Albuquerque, I. F. M., Allekotte, I., Almela, A., Castillo, J. Alvarez, Alvarez-Muñiz, J., Anastasi, G. A., and and others. A Targeted Search for Point Sources of EeV Photons with the Pierre Auger Observatory. United States: N. p., 2017. Web. doi:10.3847/2041-8213/AA61A5.
Aab, A., Abreu, P., Aglietta, M., Samarai, I. Al, Albuquerque, I. F. M., Allekotte, I., Almela, A., Castillo, J. Alvarez, Alvarez-Muñiz, J., Anastasi, G. A., & and others. A Targeted Search for Point Sources of EeV Photons with the Pierre Auger Observatory. United States. doi:10.3847/2041-8213/AA61A5.
Aab, A., Abreu, P., Aglietta, M., Samarai, I. Al, Albuquerque, I. F. M., Allekotte, I., Almela, A., Castillo, J. Alvarez, Alvarez-Muñiz, J., Anastasi, G. A., and and others. Fri . "A Targeted Search for Point Sources of EeV Photons with the Pierre Auger Observatory". United States. doi:10.3847/2041-8213/AA61A5.
@article{osti_22654520,
title = {A Targeted Search for Point Sources of EeV Photons with the Pierre Auger Observatory},
author = {Aab, A. and Abreu, P. and Aglietta, M. and Samarai, I. Al and Albuquerque, I. F. M. and Allekotte, I. and Almela, A. and Castillo, J. Alvarez and Alvarez-Muñiz, J. and Anastasi, G. A. and and others},
abstractNote = {Simultaneous measurements of air showers with the fluorescence and surface detectors of the Pierre Auger Observatory allow a sensitive search for EeV photon point sources. Several Galactic and extragalactic candidate objects are grouped in classes to reduce the statistical penalty of many trials from that of a blind search and are analyzed for a significant excess above the background expectation. The presented search does not find any evidence for photon emission at candidate sources, and combined p -values for every class are reported. Particle and energy flux upper limits are given for selected candidate sources. These limits significantly constrain predictions of EeV proton emission models from non-transient Galactic and nearby extragalactic sources, as illustrated for the particular case of the Galactic center region.},
doi = {10.3847/2041-8213/AA61A5},
journal = {Astrophysical Journal Letters},
number = 2,
volume = 837,
place = {United States},
year = {Fri Mar 10 00:00:00 EST 2017},
month = {Fri Mar 10 00:00:00 EST 2017}
}