Barometric pressure correction to gamma-ray observations and its energy dependence
نویسندگان
چکیده
Cosmic rays (CRs) have been studied extensively in the last century to understand processes universe as well solar system. In today's satellite era, although many observations are made from space, CR ground still viewed an important tool. These observations, however, mostly detect secondary cosmic (SCRs) such neutron, muon, and gamma. It is known that atmospheric pressure plays role SCR flux observed on ground. Barometric correction standard practice for neutron monitor (NM) data. However, no applied gamma-ray, being massless. But affects particles $e^{\pm}$, $\mu^{\pm}$, which produce gamma cascade. Subsequently, indirect dependence of gamma-ray can be anticipated. We examine this aspect detail by studying counts detected NaI (Tl) detector. The present study confirms there correlation between total collected all energies. scenario differs when fluxes different energies investigated separately. energy below $\sim$3 MeV primarily due radioactivity originating ground, whereas above 3 mainly produced anti-correlated with hence need corrected. demonstrated applying barometric formula successfully removes MeV. Therefore, we suggest data needs corrected local variations.
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ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2021
ISSN: ['1475-7516', '1475-7508']
DOI: https://doi.org/10.1088/1475-7516/2021/09/045