GENERAL: The Character of an Anisotropic and Spherically Symmetric Star in the Presence of a Cosmological Constant

Details GENERAL: The Character of an Anisotropic and Spherically Symmetric Star in the Presence of a Cosmological Constant GENERAL: The Character of an Anisotropic and Spherically Symmetric Star in the Presence of a Cosmological Constant

Jul 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009chphl..26g0402c&link_type=abstract

Chinese Physics Letters, Volume 26, Issue 7, pp. 070402 (2009).

Physics

1

Scientific paper

From the gravitational structure equations of an anisotropic and spherically symmetric star in the presence of a cosmological constant, we derive the inequality which limits the mass-radius ratio, imposing energy conditions on the matter. From this inequality, we display how the cosmological constant modifies the Buchdahl limit, and express the bounds on both the mass-radius ratio and surface redshift in terms of the ratio between the cosmological constant and mean energy density of the star.

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