Dwarf Galaxies, MOND, and Relativistic Gravitation

Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

9 pages, contribution to the Dwarf Galaxies special issue of Advances in Astronomy

Scientific paper

MOND is a phenomenological modification of Newton's law of gravitation which reproduces the dynamics of galaxies, without the need for additional dark matter. This paper reviews the basics of MOND and its application to dwarf galaxies. MOND is generally successful at reproducing stellar velocity dispersions in the Milky Way's classical dwarf ellipticals, for reasonable values of the stellar mass-to-light ratio of the galaxies; two discrepantly high mass-to-light ratios may be explained by tidal effects. Recent observations also show MOND describes tidal dwarf galaxies, which form in complex dynamical environments. The application of MOND to galaxy clusters, where it fails to reproduce observed gas temperatures, is also reviewed. Relativistic theories containing MOND in the non-relativistic limit have now been formulated; they all contain new dynamical fields, which may serve as additional sources of gravitation that could reconcile cluster observations with MOND. Certain limits of these theories can also give the accelerating expansion of the Universe. The standard dark matter cosmology boasts numerous manifest triumphs; however, alternatives should also be pursued as long as outstanding observational issues remain unresolved, including the empirical successes of MOND on galaxy scales and the phenomenology of dark energy.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Dwarf Galaxies, MOND, and Relativistic Gravitation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Dwarf Galaxies, MOND, and Relativistic Gravitation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dwarf Galaxies, MOND, and Relativistic Gravitation will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-562141

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.