Cosmogenic Isotopes in Lunar Soil: Solar Activity and the Exploding of Nearby Supernova

期刊论文
发表日期：

2024年2月1日

查看全文

G. I. Vasilyev,
A. N. Konstantinov,
V. M. Ostryakov,
A. K. Pavlov,
D. A. Frolov

摘要

Abstract

Lunar soil is a natural detector of cosmic rays (CRs) of different origins (solar and Galactic). Analysis of the depth profiles of cosmogenic isotopes (¹⁴C, ⁴¹Ca, ³⁶Cl, ¹⁰Be, ²⁶Al, and ⁵³Mn) allows the intensity of a CR to be reconstructed on time scales of 3–4 half-lives of the corresponding isotope. The average flux of CRs and an additional source of accelerated particles with a hard spectrum are required to fit data on ¹⁰Be. The explosion of a nearby supernova 2–3 Ma ago can serve as such a source.