Distorção espectral em uma cosmologia radialmente não homogênea

sexta-feira, novembro 08, 2013

Spectral Distortion in a Radially Inhomogeneous Cosmology

The spectral distortion of the cosmic microwave background blackbody spectrum in a radially inhomogeneous spacetime, designed to exactly reproduce a LambdaCDM expansion history along the past light cone, is shown to exceed the upper bound established by COBE-FIRAS by a factor of approximately 3700. This simple observational test helps uncover a slew of pathological features that lie hidden inside the past light cone, including a radially contracting phase at decoupling and, if followed to its logical extreme, a naked singularity at the radially inhomogeneous Big Bang.
Comments:16 pages, 8 figures (added references and clarified discussion; some numbers revised)
Subjects:Cosmology and Extragalactic Astrophysics (astro-ph.CO); General Relativity and Quantum Cosmology (gr-qc)
Cite as:arXiv:1309.4454 [astro-ph.CO]
(or arXiv:1309.4454v2 [astro-ph.CO] for this version)

Submission history

From: Robert R. Caldwell [view email]
[v1] Tue, 17 Sep 2013 20:00:02 GMT (1224kb,D)
[v2] Tue, 15 Oct 2013 17:31:59 GMT (1226kb,D)