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Observation of inclined EeV air showers with the radio detector of the Pierre Auger Observatory

Journal Article · · JCAP
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  1. Nijmegen U., IMAPP
  2. LIP, Lisbon
  3. Turin Observ.; INFN, Turin
  4. Sao Paulo U.
  5. Adelaide U.
  6. Centro Atomico Bariloche
  7. ITeDA, Buenos Aires; U. Tech. Natl., Argentina
  8. Mexico U.
  9. Santiago de Compostela U.
  10. INFN, Aquila; Gran Sasso
  11. Lehman Coll.
  12. ITeDA, Buenos Aires
  13. INFN, Naples
  14. Bucharest, Inst. Space Science
  15. Centro Atomico Bariloche; Cantabria U., Santander
  16. Pierre Auger Observ.
  17. Bucharest, Polytechnic Inst.
  18. Bucharest, IFIN-HH
  19. Naples U.; INFN, Naples
  20. KIT, Karlsruhe, IKP
  21. Wuppertal U.
  22. LPSC, Grenoble
  23. Turin U.; INFN, Turin
  24. Orsay, IPN
  25. Prague, Inst. Phys.
  26. Salento U.; INFN, Lecce
  27. Rio de Janeiro Federal U.
  28. Cracow, INP
  29. ITeDA, Buenos Aires; KIT, Karlsruhe, IKP
  30. Aachen, Tech. Hochsch.
  31. KIT, Karlsruhe, ETP
  32. Siegen U.
  33. Granada U., Theor. Phys. Astrophys.
  34. Catania U.; INFN, Catania
  35. Chiapas Autonoma U.
  36. Milan U.
  37. La Plata U.
  38. U. Tech. Natl., Argentina; ITeDA, Buenos Aires
  39. Nijmegen U., IMAPP; Nikhef, Amsterdam
  40. U. Sao Paulo (main)
  41. INFN, Lecce
  42. Campinas State U.
  43. Palacky U.
  44. Natl. Tech. U., San Rafael
  45. Penn State U.
  46. INFN, Turin
  47. INFN, Milan; Milan Polytechnic
  48. Case Western Reserve U.
  49. Salento U., DII; INFN, Lecce
  50. Buenos Aires, IAFE; Buenos Aires U.
  51. Niteroi, Fluminense U.
  52. Sao Paulo U., Sao Carlos
  53. Parana U.
  54. Hamburg U., Inst. Theor. Phys. II
  55. Fermilab
  56. Nijmegen U., IMAPP; ASTRON, Dwingeloo; Nikhef, Amsterdam
  57. Chicago U., EFI
  58. New York U.
  59. KIT, Karlsruhe, IPE
  60. Michigan Tech. U.
  61. Stefan Inst., Ljubljana; Nova Gorica U.
  62. IFIR, Rosario
  63. Paris U., VI-VII
  64. Rio de Janeiro Federal U.; Rio de Janeiro, CBPF
  65. INFN, Milan
  66. U. Lodz (main)
  67. Centro Atomico Bariloche; KIT, Karlsruhe, IKP
  68. UEFS, Feira de Santana
  69. INFN, Turin; Turin U.
  70. KIT, Karlsruhe, ETP; ITeDA, Buenos Aires
  71. Colorado School of Mines
  72. Nova Gorica U.
  73. ABC Federal U.
  74. Puebla U., Inst. Fis.
  75. Milan U.; INFN, Milan
  76. Brussels U.
  77. CINVESTAV, IPN
  78. Louisiana State U.
  79. Rome U., Tor Vergata; INFN, Rome2
  80. Charles U.
  81. Cantabria U., Santander
  82. LIDAR CITEFA
  83. UPII, IPN
  84. L'Aquila U.; Gran Sasso
  85. Buenos Aires, IAFE
  86. INFN, Rome2
  87. KIT, Karlsruhe, IKP; ITeDA, Buenos Aires
  88. Groningen, KVI
  89. Palermo Observ.; INFN, Catania
  90. Rio de Janeiro, CBPF
  91. Nebraska U.
  92. Northeastern U.
  93. Nikhef, Amsterdam; Nijmegen U., IMAPP
  94. Nova Gorica U.; Stefan Inst., Ljubljana
+ Show Author Affiliations

With the Auger Engineering Radio Array (AERA) of the Pierre Auger Observatory, we have observed the radio emission from 561 extensive air showers with zenith angles between 60o and 84o. In contrast to air showers with more vertical incidence, these inclined air showers illuminate large ground areas of several km2 with radio signals detectable in the 30 to 80 MHz band. A comparison of the measured radio-signal amplitudes with Monte Carlo simulations of a subset of 50 events for which we reconstruct the energy using the Auger surface detector shows agreement within the uncertainties of the current analysis. As expected for forward-beamed radio emission undergoing no significant absorption or scattering in the atmosphere, the area illuminated by radio signals grows with the zenith angle of the air shower. Inclined air showers with EeV energies are thus measurable with sparse radio-antenna arrays with grid sizes of a km or more. This is particularly attractive as radio detection provides direct access to the energy in the electromagnetic cascade of an air shower, which in case of inclined air showers is not accessible by arrays of particle detectors on the ground.

Research Organization:
LIP, Lisbon; Gran Sasso; Rio de Janeiro Federal U.; Orsay, IPN; Rome U., Tor Vergata; INFN, Naples; ASTRON, Dwingeloo; Palacky U.; Cracow, INP; Michigan Tech. U.; Bucharest, Inst. Space Science; Salento U.; Turin U.; ABC Federal U.; Siegen U.; Hamburg U., Inst. Theor. Phys. II; KIT, Karlsruhe, IPE; Niteroi, Fluminense U.; Aachen, Tech. Hochsch.; INFN, Lecce; Louisiana State U.; INFN, Turin; Catania U.; Brussels U.; Penn State U.; Charles U.; KIT, Karlsruhe, ETP; IFIR, Rosario; Paris U., VI-VII; Groningen, KVI; Stefan Inst., Ljubljana; Campinas State U.; Milan Polytechnic; Buenos Aires U.; LIDAR CITEFA; Prague, Inst. Phys.; Turin Observ.; New York U.; Chiapas Autonoma U.; Pierre Auger Observ.; INFN, Rome2; Northeastern U.; ITeDA, Buenos Aires; Nebraska U.; INFN, Aquila; Lehman Coll.; Natl. Tech. U., San Rafael; Palermo Observ.; LPSC, Grenoble; Parana U.; UEFS, Feira de Santana; Wuppertal U.; Granada U., Theor. Phys. Astrophys.; Adelaide U.; Sao Paulo U.; Salento U., DII; Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Chicago U., EFI; Buenos Aires, IAFE; Milan U.; KIT, Karlsruhe, IKP; Nijmegen U., IMAPP; Rio de Janeiro, CBPF; Santiago de Compostela U.; Nova Gorica U.; INFN, Milan; La Plata U.; UPII, IPN; Case Western Reserve U.; U. Lodz (main); Puebla U., Inst. Fis.; Bucharest, IFIN-HH; U. Sao Paulo (main); INFN, Catania; L'Aquila U.; U. Tech. Natl., Argentina; Cantabria U., Santander; Naples U.; Nikhef, Amsterdam; Sao Paulo U., Sao Carlos; Centro Atomico Bariloche; Bucharest, Polytechnic Inst.; CINVESTAV, IPN; Mexico U.; Colorado School of Mines
Sponsoring Organization:
US Department of Energy
Grant/Contract Number:
AC02-07CH11359
OSTI ID:
1463631
Report Number(s):
FERMILAB-PUB-18-259-ND; oai:inspirehep.net:1677962; arXiv:1806.05386
Journal Information:
JCAP, Journal Name: JCAP Vol. 10
Country of Publication:
United States
Language:
English

Figures / Tables (9)

Figure 1(p. 9)figure Figure 1
Figure 2(p. 10)figure Figure 2
Figure 3(p. 11)figure Figure 3
Figure 4(p. 12)figure Figure 4
Figure 5(p. 13)figure Figure 5
Figure 6(p. 14)figure Figure 6
Figure 7(p. 15)figure Figure 7
Figure 8(p. 16)figure Figure 8
Figure 9(p. 17)figure Figure 9

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46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
79 ASTRONOMY AND ASTROPHYSICS