کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8193648 | 1528884 | 2010 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Measurement of the energy spectrum of cosmic rays above 1018 eV using the Pierre Auger Observatory
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Measurement of the energy spectrum of cosmic rays above 1018 eV using the Pierre Auger Observatory Measurement of the energy spectrum of cosmic rays above 1018 eV using the Pierre Auger Observatory](/preview/png/8193648.png)
چکیده انگلیسی
We report a measurement of the flux of cosmic rays with unprecedented precision and statistics using the Pierre Auger Observatory. Based on fluorescence observations in coincidence with at least one surface detector we derive a spectrum for energies above 1018 eV. We also update the previously published energy spectrum obtained with the surface detector array. The two spectra are combined addressing the systematic uncertainties and, in particular, the influence of the energy resolution on the spectral shape. The spectrum can be described by a broken power law Eâγ with index γ=3.3 below the ankle which is measured at log10(Eankle/eV)=18.6. Above the ankle the spectrum is described by a power law with index 2.6 followed by a flux suppression, above about log10(E/eV)=19.5, detected with high statistical significance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 685, Issues 4â5, 8 March 2010, Pages 239-246
Journal: Physics Letters B - Volume 685, Issues 4â5, 8 March 2010, Pages 239-246
نویسندگان
Pierre Auger Collaboration Pierre Auger Collaboration, J. Abraham, P. Abreu, M. Aglietta, E.J. Ahn, D. Allard, J. Allen, J. Alvarez-Muñiz, M. Ambrosio, L. Anchordoqui, S. Andringa, T. AntiÄiÄ, A. Anzalone, C. Aramo, E. Arganda, K. Arisaka,