کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8182369 | 1526765 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Gamma-ray and Neutrino Diffuse Emissions of the Galaxy at very High Energy
ترجمه فارسی عنوان
انتشار گازهای گامای نوری و نورثنی از کهکشان در انرژی بسیار بالا
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کلمات کلیدی
اشعه های کیهانی، گاما نجوم و ستاره نوتینو،
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
چکیده انگلیسی
Several independent analyzes of Fermi-LAT results found evidences of a spatial dependent cosmic ray (CR) spectral index which is not accounted for by conventional models of CR transport in the Galaxy. Moreover, several experiments have established the presence of a CR spectral hardening above few hundred GeV. We show that these results may have a relevant impact on the γ-ray and neutrino diffuse emissions of the Galaxy above the TeV. Indeed a phenomenological model which adopts a spatial dependent diffusion coefficient, so to account for those features, also reproduces the γ-ray excess found by Milagro at 15 TeV and the spectrum measured by H.E.S.S. and Fermi-LAT in the Galactic ridge. The same model predicts a neutrino emission along the Galactic plane which is significantly larger than expected on the basis of conventional models. This emission is compatible with ANTARES upper limits and is a natural target for KM3NeT.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear and Particle Physics Proceedings - Volumes 291â293, OctoberâNovember 2017, Pages 9-14
Journal: Nuclear and Particle Physics Proceedings - Volumes 291â293, OctoberâNovember 2017, Pages 9-14
نویسندگان
D. Grasso, D. Gaggero, A. Marinelli, A. Urbano, M. Valli,