Hostname: page-component-6bf8c574d5-b4m5d Total loading time: 0 Render date: 2025-02-22T17:09:21.675Z Has data issue: false hasContentIssue false
  • English
  • Français

N-body simulations in modified Newtonian dynamics

Published online by Cambridge University Press:  20 January 2011

H. Wozniak ,
G. Hensler ,
C. Nipoti ,
P. Londrillo  and
L. Ciotti
C. Nipoti
Affiliation:
Astronomy Department, University of Bologna, via Ranzani 1, 40127 Bologna, Italy
P. Londrillo
Affiliation:
INAF-Bologna Astronomical Observatory, via Ranzani 1, 40127 Bologna, Italy
L. Ciotti
Affiliation:
Astronomy Department, University of Bologna, via Ranzani 1, 40127 Bologna, Italy
Get access

Abstract

We describe some results obtained with N-MODY, a code for N-body simulations of collisionless stellar systems in modified Newtonian dynamics (MOND). We found that a few fundamental dynamical processes are profoundly different in MOND and in Newtonian gravity with dark matter. In particular, violent relaxation, phase mixing and galaxy merging take significantly longer in MOND than in Newtonian gravity, while dynamical friction is more effective in a MOND system than in an equivalent Newtonian system with dark matter.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 44: JENAM 2008: Grand Challenges in Computational Astrophysics , 2010 , pp. 37 - 40
Copyright
© EAS, EDP Sciences 2011

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Références

Barnes, J.E., & Hut, P., 1986, Nature, 324, 446 CrossRef
Bekenstein, J.D., & Milgrom, M., 1984, ApJ, 286, 7 CrossRef
Binney, J., 2004, ed., Ryder S.D., Pisano D.J., Walker M.A., Freeman K.C., IAU Symp. 220, Dark Matter in Galaxies. Astron. Soc. Pac., San Francisco, 3
Brada, R., & Milgrom, M., 1995, MNRAS, 276, 453 CrossRef
Brada, R., & Milgrom, M., 1999, ApJ, 519, 590 CrossRef
Ciotti, L., & Binney, J., 2004, MNRAS, 351, 285 CrossRef
Ciotti, L., Londrillo, P., & Nipoti, C., 2006, ApJ, 640, 741 CrossRef
Ciotti, L., Nipoti, C., & Londrillo, P., 2007, in Collective Phenomena in Macroscopic Systems, ed. G. Bertin et al. (Singapore: World Scientific), 177
Djorgovski, S., & Davis, M., 1987, ApJ, 313, 59 CrossRef
Dressler, A., Lynden-Bell, D., Burstein, D., et al., 1987, ApJ, 313, 42 CrossRef
Faber, S.M., & Jackson, R.E., 1976, ApJ, 204, 668 CrossRef
Felten, J.E., 1984, ApJ, 286, 3 CrossRef
Kormendy, J., 1977, ApJ, 295, 73 CrossRef
Llinares, C., Knebe, A., & Zhao, H., 2008, MNRAS, in press [arXiv:0809.2899]
Londrillo, P., & Nipoti, C., 2008, Mem. Soc. Astron. Ital., in press [arXiv:0803.4456]
Milgrom, M., 1983, ApJ, 270, 365 CrossRef
Milgrom, M., 1986, ApJ, 302, 617 CrossRef
Nipoti, C., Londrillo, P., & Ciotti, L., 2007a, ApJ, 660, 256 CrossRef
Nipoti, C., Londrillo, P., Zhao, H., & Ciotti, L., 2007b, MNRAS, 379, 597 CrossRef
Nipoti, C., Londrillo, P., & Ciotti, L., 2007c, MNRAS, 381, L104 CrossRef
Nipoti, C., Ciotti, L., Binney, J., & Londrillo, P., 2008, MNRAS, 386, 2194 CrossRef
Sánchez-Salcedo, F.J., Reyes-Iturbide, J., & Hernandez, X., 2006, MNRAS, 370, 1829 CrossRef
Sellwood, J., 2004, ed., Ryder S.D., Pisano D.J., Walker M.A., Freeman K.C., IAU Symp. 220, Dark Matter in Galaxies. Astron. Soc. Pac., San Francisco, 27
Tiret, O., & Combes, F., 2007, A&A, 464, 517