Journal article
Cosmic ray acceleration in hydromagnetic flux tubes
- Abstract:
- We find that hydromagnetic flux tubes in back-flows in the lobes of radio galaxies offer a suitable environment for the acceleration of cosmic rays (CR) to ultra-high energies. We show that CR can reach the Hillas (1984) energy even if the magnetized turbulence in the flux tube is not sufficiently strong for Bohm diffusion to apply. First-order Fermi acceleration by successive weak shocks in a hydromagnetic flux tube is shown to be equivalent to second-order Fermi acceleration by strong turbulence.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 619.8KB, Terms of use)
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- Publisher copy:
- 10.1093/mnras/stz1604
Authors
- Publisher:
- Oxford University Press
- Journal:
- Monthly Notices of the Royal Astronomical Society More from this journal
- Volume:
- 487
- Issue:
- 4
- Pages:
- 4571–4579
- Publication date:
- 2019-06-19
- Acceptance date:
- 2019-05-31
- DOI:
- EISSN:
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1365-2966
- ISSN:
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0035-8711
- Keywords:
- Pubs id:
-
pubs:1010695
- UUID:
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uuid:a3003585-339b-41c9-8966-4eaf96b3cf72
- Local pid:
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pubs:1010695
- Source identifiers:
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1010695
- Deposit date:
-
2019-06-20
Terms of use
- Copyright holder:
- Bell et al
- Copyright date:
- 2019
- Notes:
- Copyright © 2019 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society.
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