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

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

DE MITRI, Ivan;
2017-01-01

Abstract

Simultaneous measurements of air showers with the fluorescence and surface detectors of the Pierre AugerObservatory allow a sensitive search for EeV photon point sources. Several Galactic and extragalactic candidateobjects are grouped in classes to reduce the statistical penalty of many trials from that of a blind search and areanalyzed for a significant excess above the background expectation. The presented search does not find anyevidence for photon emission at candidate sources, and combined p-values for every class are reported. Particle andenergy flux upper limits are given for selected candidate sources. These limits significantly constrain predictions ofEeV proton emission models from non-transient Galactic and nearby extragalactic sources, as illustrated for theparticular case of the Galactic center region.
2017
astroparticle physics – cosmic rays – methods: data analysis
File in questo prodotto:
File Dimensione Formato  
2017_AstrophysJLett_837_Aab.pdf

non disponibili

Tipologia: Versione Editoriale (PDF)
Licenza: Non pubblico
Dimensione 444.64 kB
Formato Adobe PDF
444.64 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12571/1602
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 20
  • ???jsp.display-item.citation.isi??? 20
social impact