A Tale of Two Distances
| dc.creator | Kunz, Martin | |
| dc.creator | Bassett, Bruce A. | |
| dc.date | 2004-06-01 | |
| dc.date.accessioned | 2026-07-07T02:13:22Z | |
| dc.date.available | 2026-07-07T02:13:22Z | |
| dc.description | There are two basic ways to measure physical distances in cosmology: One based on standard candles and one based on standard rulers. Comparing current data for each method allows us to rule out axion-photon mixing and dust-extinction as the sources of supernova dimming and generally protects the case for cosmic acceleration from attacks based on loss of photons. The combined data constrains the energy densities in a LCDM model to 0.19 < Omega_m < 0.32 and 0.47 < Omega_Lambda < 0.82 (at 2σ) without recourse to any further data sets. Future data will improve on these limits and allow us to place constraints on more exotic physics. | |
| dc.description | 4 pages, 1 figure, uses moriond.sty. To be published in the Proceedings of the XXXIX Rencontres de Moriond 'Exploring the Universe' | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0406013 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0406013 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/7791 | |
| dc.subject | Astrophysics | |
| dc.title | A Tale of Two Distances | |
| dc.type | text |