1. Cosmological parameters from the first results of Boomerang
- Author
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Dmitry Pogosyan, J. Bond, E. Hivon, Pedro G. Ferreira, Philip Daniel Mauskopf, Calvin B. Netterfield, Alessandro Melchiorri, K. Coble, Peter A. R. Ade, Silvia Masi, B. P. Crill, A. Boscaleri, M. Giacometti, D. Sforna, L. Martinis, S. Rao, F. Scaramuzzi, P. C. Farese, Enzo Pascale, P. de Bernardis, T. E. Montroy, Andrew H. Jaffe, James J. Bock, Julian Borrill, J. E. Ruhl, K. Ganga, F. Piacentini, V. Hristov, A. Iacoangeli, Andrew E. Lange, Simon Prunet, and Giovanni Romeo more...
- Subjects
Physics ,Big Bang ,Nuclear and High Energy Physics ,Age of the universe ,010308 nuclear & particles physics ,Cosmic microwave background ,BOOMERanG experiment ,Astronomy ,Lambda-CDM model ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Astrophysics ,01 natural sciences ,7. Clean energy ,Physical cosmology ,13. Climate action ,De Sitter universe ,0103 physical sciences ,Dark energy ,010303 astronomy & astrophysics - Abstract
The anisotropy of the cosmic microwave background radiation contains information about the contents and history of the universe. We report new limits on cosmological parameters derived from the angular power spectrum measured in the first Antarctic flight of the Boomerang experiment. Within the framework of models with adiabatic perturbations, and using only weakly restrictive prior probabilities on the age of the universe and the Hubble expansion parameter h, we find that the curvature is consistent with flat and that the primordial fluctuation spectrum is consistent with scale invariant, in agreement with the basic inflation paradigm. We find that the data prefer a baryon density Ωbh2 above, though similar to, the estimates from light element abundances and big bang nucleosynthesis. When combined with large scale structure observations, the Boomerang data provide clear detections of both dark matter and dark energy contributions to the total energy density Ωtot, independent of data from high-redshift supernovae. more...
- Published
- 2001
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