Journal article

Dynamical friction in modified Newtonian dynamics

Abstract:: We have tested a previous analytical estimate of the dynamical friction timescale in Modified Newtonian Dynamics (MOND) with fully non-linear N-body simulations. The simulations confirm that the dynamical friction timescale is significantly shorter in MOND than in equivalent Newtonian systems, i.e. systems with the same phase-space distribution of baryons and additional dark matter. An apparent conflict between this result and the long timescales determined for bars to slow and mergers to be completed in previous N-body simulations of MOND systems is explained. The confirmation of the short dynamical-friction timescale in MOND underlines the challenge that the Fornax dwarf spheroidal poses to the viability of MOND.

Publication status:: Published

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APA Style

Nipoti, C., Ciotti, L., Binney, J., & Londrillo, P. (2008). Dynamical friction in modified Newtonian dynamics. Monthly Notices of the Royal Astronomical Society, 386(4), 2194–2198.

MLA Style

Nipoti, C, et al. “Dynamical Friction in Modified Newtonian Dynamics.” Monthly Notices of the Royal Astronomical Society, vol. 386, no. 4, 2008, pp. 2194–98.

Chicago Style

Nipoti, C, L Ciotti, J Binney, and P Londrillo. 2008. “Dynamical Friction in Modified Newtonian Dynamics.” Monthly Notices of the Royal Astronomical Society 386 (4): 2194–98.
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Publisher copy:: 10.1111/j.1365-2966.2008.13192.x

Authors

+ Nipoti, C More by this author

Role:: Author

+ Ciotti, L More by this author

Role:: Author

+ Binney, J More by this author

Role:: Author

+ Londrillo, P More by this author

Role:: Author

Journal:: Monthly Notices of the Royal Astronomical Society More from this journal
Volume:: 386
Issue:: 4
Pages:: 2194-2198
Publication date:: 2008-02-08
DOI:: 10.1111/j.1365-2966.2008.13192.x
EISSN:: 1365-2966
ISSN:: 0035-8711

Language:: English
Keywords:: astro-ph
Pubs id:: pubs:167408
UUID:: uuid:110d46a5-2960-42d0-806b-e2b4039b062c
Local pid:: pubs:167408
Source identifiers:: 167408
Deposit date:: 2012-12-19
ARK identifier:: ark:/29072/ora_110d46a5296042d0806be2b4039b062c

Terms of use

Copyright date:: 2008
Notes:: Accepted for publication in MNRAS. 6 pages, 3 figures. Corrected typo
in eq. (8), added panel to Fig. 1, added references and discussion. Results
unchanged

Licence:: Terms and Conditions of Use for Oxford University Research Archive

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