Atmospheric effects on extensive air showers observed with the surface detector of the Pierre Auger observatory


Abstract:

Atmospheric parameters, such as pressure (P), temperature (T) and density (ρ ∝ P / T), affect the development of extensive air showers initiated by energetic cosmic rays. We have studied the impact of atmospheric variations on extensive air showers by means of the surface detector of the Pierre Auger Observatory. The rate of events shows a ∼ 10 % seasonal modulation and ∼ 2 % diurnal one. We find that the observed behaviour is explained by a model including the effects associated with the variations of P and ρ. The former affects the longitudinal development of air showers while the latter influences the Molière radius and hence the lateral distribution of the shower particles. The model is validated with full simulations of extensive air showers using atmospheric profiles measured at the site of the Pierre Auger Observatory. © 2009 Elsevier B.V. All rights reserved.

Año de publicación:

2009

Keywords:

  • Weather
  • Extensive air showers
  • UHECR
  • Atmosphere

Fuente:

scopusscopus

Tipo de documento:

Article

Estado:

Acceso restringido

Áreas de conocimiento:

  • Rayo cósmico
  • Ciencia atmosférica

Áreas temáticas de Dewey:

  • Geología, hidrología, meteorología
  • Cuerpos y fenómenos celestes específicos
  • Otras ramas de la ingeniería
Procesado con IAProcesado con IA

Objetivos de Desarrollo Sostenible:

  • ODS 13: Acción por el clima
  • ODS 7: Energía asequible y no contaminante
  • ODS 9: Industria, innovación e infraestructura
Procesado con IAProcesado con IA