کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1770469 1523350 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Maximum entropy analysis of cosmic ray composition
ترجمه فارسی عنوان
حداکثر آنتروپی تجزیه و تحلیل ترکیبات اشعه کیهانی
کلمات کلیدی
پرتوهای کیهانی انرژی فوق العاده بالا، دوش هوای گسترده، ترکیب اشعه کیهانی
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم نجوم و فیزیک نجومی
چکیده انگلیسی

We focus on the primary composition of cosmic rays with the highest energies that cause extensive air showers in the Earth’s atmosphere. A way of examining the two lowest order moments of the sample distribution of the depth of shower maximum is presented. The aim is to show that useful information about the composition of the primary beam can be inferred with limited knowledge we have about processes underlying these observations. In order to describe how the moments of the depth of shower maximum depend on the type of primary particles and their energies, we utilize a superposition model. Using the principle of maximum entropy, we are able to determine what trends in the primary composition are consistent with the input data, while relying on a limited amount of information from shower physics. Some capabilities and limitations of the proposed method are discussed. In order to achieve a realistic description of the primary mass composition, we pay special attention to the choice of the parameters of the superposition model. We present two examples that demonstrate what consequences can be drawn for energy dependent changes in the primary composition.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Astroparticle Physics - Volume 76, March 2016, Pages 9–18
نویسندگان
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