Combining Supernovae and LSS Information with the CMB

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dc.creatorLasenby, A. N.
dc.creatorBridle, S. L.
dc.creatorHobson, M. P.
dc.date1999-01-21
dc.date.accessioned2026-07-07T02:30:08Z
dc.date.available2026-07-07T02:30:08Z
dc.descriptionObservations of the Cosmic Microwave Background (CMB), large scale structure (LSS) and standard candles such as Type 1a Supernovae (SN) each place different constraints on the values of cosmological parameters. We assume an inflationary Cold Dark Matter model with a cosmological constant, in which the initial density perturbations in the universe are adiabatic. We discuss the parameter degeneracies inherent in interpreting CMB or SN data, and derive their orthogonal nature. We then present our preliminary results of combining CMB and SN likelihood functions. The results of combining the CMB and IRAS 1.2 Jy survey information are given, with marginalised confidence regions in the H_0, Omega_m, b_IRAS and Q_rms-ps directions assuming n=1, Omega_Lambda+Omega_m=1 and Omega_b h^2=0.024. Finally we combine all three likelihood functions and find that the three data sets are consistent and suitably orthogonal, leading to tight constraints on H_0, Omega_m, b_IRAS and Q_rms-ps, given our assumptions.
dc.description7 pages, 4 figures, submitted to ``The CMB and the Planck Mission'', proceedings of the workshop held in Santander, Spain, June 1998
dc.identifierhttps://arxiv.org/abs/astro-ph/9901303
dc.identifierhttp://arxiv.org/abs/astro-ph/9901303
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/13724
dc.subjectAstrophysics
dc.titleCombining Supernovae and LSS Information with the CMB
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