A simple determination of the halo size from<sup>10</sup>Be/<sup>9</sup>Be data

نویسندگان

چکیده

Context. The AMS-02 and HELIX experiments should soon provide 10 Be/ 9 Be cosmic-ray data of unprecedented precision. Aims. We propose an analytical formula to quickly accurately determine L from these data. Methods. Our is validated against the full calculation performed with propagation code USINE . compare constraints on set by Be/B Be, relying updated sets production cross-sections. Results. best-fit shifted 5 kpc 3.8 when using obtained consistent results analysis , = ?1.6 +2.8 (data cross-section uncertainties), simplified formula, 4.7 ± 0.6 uncertainties) ±2 (cross-section kpc. indicates that improvements thanks future will be limited uncertainties, unless either measurements are extended up several tens GeV/n, or nuclear for improved; new cross section 16 O into isotopes above a few GeV/n especially desired.

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ژورنال

عنوان ژورنال: Astronomy and Astrophysics

سال: 2022

ISSN: ['0004-6361', '1432-0746']

DOI: https://doi.org/10.1051/0004-6361/202243546