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A general relativistic model of galaxy bulges in GEDi paradigm

Published online by Cambridge University Press:  01 July 2007

C. H. Coimbra-Araújo  and
P. S. Letelier
C. H. Coimbra-Araújo
Affiliation:
Instituto de Física “Gleb Wataghin”, Universidade Estadual de Campinas, Unicamp, 13083-970, Campinas, SP, Brazil.
P. S. Letelier
Affiliation:
Departamento de Matemática Aplicada, Instituto de Matemática, Estatística e Computação Científica, Universidade Estadual de Campinas, Unicamp, 13083-970, Campinas, SP, Brazil.
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Abstract

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Recently a new approach was presented where astronomical objects as galaxies and clusters are idealized as self-gravitating systems living in a universe endowed with more than 3+1 dimensions. A such paradigm, named GEDi (Gravitation with Extra Dimensions), may solve exactly the missing mass problem for rotation curves of galaxies or gravitational lensing of clusters with no dark matter particles. Here we present an introductory discussion about the construction of a real galaxy using a Miyamoto-Nagai solution for isotropical coordinates to mimic spiral galaxies with bulges.

Keywords

galaxies: generaldark mattergalaxies: bulgesextra dimensions
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S245: Formation and Evolution of Galaxy Bulges , July 2007 , pp. 239 - 240
Copyright
Copyright © International Astronomical Union 2008

References

Coimbra-Araújo, C. H. & Letelier, P. S. 2006, in: Karas, V. (ed.), Proceedings of IAU Symposium 238, General relativistic results for a galactic disc in a multidimensional space-time (Cambridge: Cambridge Un. Press), vol. 238, p. 343Google Scholar
Coimbra-Araújo, C. H. & Letelier, P. S. 2007a, Phys. Rev. D 76, 043522CrossRefGoogle Scholar
Coimbra-Araújo, C. H. & Letelier, P. S. 2007b, Class. Quantum Grav. (in press)Google Scholar
Vogt, D. & Letelier, P. S. 2003, Phys. Rev. D 68, 084010CrossRefGoogle Scholar
Vogt, D. & Letelier, P. S. 2005, MNRAS 363, 268CrossRefGoogle Scholar