Cross-correlating the Microwave Sky with Galaxy Surveys
| dc.creator | Fosalba, Pablo | |
| dc.creator | Gaztanaga, Enrique | |
| dc.creator | Castander, Francisco J. | |
| dc.date | 2003-10-16 | |
| dc.date | 2003-10-18 | |
| dc.date.accessioned | 2026-07-25T12:06:54Z | |
| dc.description | We present results for the cross-correlation between the WMAP 1st-year cosmic microwave background (CMB) anisotropy data and optical galaxy surveys: the APM and SDSS DR1 catalogs. Our measurement of a positive CMB-galaxy correlation on large angles (θ> 4 deg) yields significant detections of the Integrated Sachs-Wolfe (ISW) effect and provides a new estimate of dark-energy in the universe, Ω_Λ=0.69-0.86 (2 σrange). In addition, the correlated signal on small angles (θ<1 deg) reveals the imprint left by hot intra-cluster gas in the CMB photons: the thermal Sunyaev-Zeldovich (SZ) effect | |
| dc.description | 7 pages. Invited talk at XVth Rencontres de Blois (France): "Physical Cosmology", June 2003. References added | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0310450 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0310450 | |
| dc.identifier.uri | https://dspace.dare.co.zw/handle/123456789/7623 | |
| dc.subject | Astrophysics | |
| dc.title | Cross-correlating the Microwave Sky with Galaxy Surveys | |
| dc.type | text |