A Critical Examination of the Nested Leaky Box Model for Galactic Cosmic Ray Transport
Fuente:
arXiv
Enregistré dans:
| Auteurs principaux: | , , |
|---|---|
| Format: | Preprint |
| Publié: |
2025
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866913701426102272 |
|---|---|
| author | Schroer, Benedikt Evoli, Carmelo Blasi, Pasquale |
| author_facet | Schroer, Benedikt Evoli, Carmelo Blasi, Pasquale |
| contents | We revisit the predictions of the nested leaky box model in detail, in terms of both primary cosmic-ray spectra, spectra of stable and unstable nuclei and antimatter production (positrons and antiprotons). We conclude that the model is in direct conflict with several observational facts and at least in its vanilla version should be considered as ruled out by current data. We also speculate on some possibly interesting implications of the idea that at least a fraction of Galactic grammage may not be accumulated in the journey of cosmic rays in the interstellar medium but rather inside the sources or in regions around them. These speculations will become increasingly more relevant with the higher precision data becoming available at high energies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_15115 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A Critical Examination of the Nested Leaky Box Model for Galactic Cosmic Ray Transport Schroer, Benedikt Evoli, Carmelo Blasi, Pasquale High Energy Astrophysical Phenomena We revisit the predictions of the nested leaky box model in detail, in terms of both primary cosmic-ray spectra, spectra of stable and unstable nuclei and antimatter production (positrons and antiprotons). We conclude that the model is in direct conflict with several observational facts and at least in its vanilla version should be considered as ruled out by current data. We also speculate on some possibly interesting implications of the idea that at least a fraction of Galactic grammage may not be accumulated in the journey of cosmic rays in the interstellar medium but rather inside the sources or in regions around them. These speculations will become increasingly more relevant with the higher precision data becoming available at high energies. |
| title | A Critical Examination of the Nested Leaky Box Model for Galactic Cosmic Ray Transport |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2502.15115 |