Hostname: page-component-cd9895bd7-mkpzs Total loading time: 0 Render date: 2024-12-26T17:21:46.697Z Has data issue: false hasContentIssue false
  • English
  • Français

Origins of Cosmic magnetism

Published online by Cambridge University Press:  03 March 2020

Kandaswamy Subramanian
Kandaswamy Subramanian*
Affiliation:
IUCAA, Post Bag 4, Ganeshkhind, Pune411007, India email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The standard picture for the origin of magnetic fields in astrophysical systems involves turbulent dynamo amplification of a weak seed field. Dynamos convert kinetic energy of motions to magnetic energy. While it is relatively easy for magnetic energy to grow, explaining the observed degree of coherence of cosmic magnetic fields generated by turbulent dynamos, remains challenging. We outline potential resolution of these challenges. Another intriguing possibility is that magnetic fields originated at some level from the early universe.

Keywords

magnetic fieldsgalaxies: magnetic fieldsgalaxies: clusters: generalearly universe
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium A30: Astronomy in Focus XXX , August 2018 , pp. 291 - 294
Copyright
© International Astronomical Union 2020

References

Beck, R., & Hoernes, P. 1996, Nature, 379, 47 CrossRefGoogle Scholar
Bhat, P., and Subramanian, K. 2013, MNRAS, 429, 2469–2481 CrossRefGoogle Scholar
Bhat, P., Subramanian, K., & Brandenburg, A. 2016, MNRAS, 461, 240 CrossRefGoogle Scholar
Chamandy, L., Shukurov, A., & Subramanian, K. 2015, MNRAS, 446, L6 CrossRefGoogle Scholar
Haugen, N. E., Brandenburg, A., and Dobler, W. 2004, PRE, 70 (1), 016308 CrossRefGoogle Scholar
Kazantsev, A. P. 1967, JETP, 53, 1807 (English translation: Sov. Phys. JETP, 26, 1031, 1968)Google Scholar
Schekochihin, A. A., Cowley, S. C., Taylor, S. F., Maron, J. L., and McWilliams, J. C. 2004, ApJ, 612, 276 CrossRefGoogle Scholar
Sharma, R., Subramanian, K., & Seshadri, T. R. 2018, PRD, 97, 083503 CrossRefGoogle Scholar
Subramanian, K., Shukurov, A., and Haugen, N. E. L. 2006, MNRAS, 366, 1437 CrossRefGoogle Scholar
Subramanian, K. 2016, Reports on Progress in Physics, 79, 076901 CrossRefGoogle Scholar
Sur, S., Bhat, P., & Subramanian, K. 2018, MNRAS, 475, L72 CrossRefGoogle Scholar