کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1771207 1020738 2009 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Atmospheric effects on extensive air showers observed with the surface detector of the Pierre Auger observatory
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم نجوم و فیزیک نجومی
پیش نمایش صفحه اول مقاله
Atmospheric effects on extensive air showers observed with the surface detector of the Pierre Auger observatory
چکیده انگلیسی

Atmospheric parameters, such as pressure (P), temperature (T  ) and density (ρ∝P/T)(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%∼10% seasonal modulation and ∼2%∼2% diurnal one. We find that the observed behaviour is explained by a model including the effects associated with the variations of P   and ρρ. 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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Astroparticle Physics - Volume 32, Issue 2, September 2009, Pages 89–99
نویسندگان
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