High redshift detection of the integrated Sachs-Wolfe effect

Tommaso Giannantonio; Robert G. Crittenden; Robert C. Nichol; Ryan Scranton; Gordon T. Richards; Adam D. Myers; Robert J. Brunner; Alexander G. Gray; Andrew J. Connolly; Donald P. Schneider

doi:10.1103/PhysRevD.74.063520

High redshift detection of the integrated Sachs-Wolfe effect

Tommaso Giannantonio, Robert G. Crittenden, Robert C. Nichol, Ryan Scranton, Gordon T. Richards, Adam D. Myers, Robert J. Brunner, Alexander G. Gray, Andrew J. Connolly, Donald P. Schneider

Research output: Contribution to journal › Article › peer-review

124 Scopus citations

Abstract

We present evidence of a large angle correlation between the cosmic microwave background measured by WMAP and a catalog of photometrically detected quasars from the SDSS. The observed cross correlation is 0.30±0.14μK at zero lag, with a shape consistent with that expected for correlations arising from the integrated Sachs-Wolfe effect. The photometric redshifts of the quasars are centered at z∼1.5, making this the deepest survey in which such a correlation has been observed. Assuming this correlation is due to the ISW effect, this constitutes the earliest evidence yet for dark energy and it can be used to constrain exotic dark energy models.

Original language	English (US)
Article number	063520
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	74
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevD.74.063520
State	Published - 2006

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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title = "High redshift detection of the integrated Sachs-Wolfe effect",

abstract = "We present evidence of a large angle correlation between the cosmic microwave background measured by WMAP and a catalog of photometrically detected quasars from the SDSS. The observed cross correlation is 0.30±0.14μK at zero lag, with a shape consistent with that expected for correlations arising from the integrated Sachs-Wolfe effect. The photometric redshifts of the quasars are centered at z∼1.5, making this the deepest survey in which such a correlation has been observed. Assuming this correlation is due to the ISW effect, this constitutes the earliest evidence yet for dark energy and it can be used to constrain exotic dark energy models.",

author = "Tommaso Giannantonio and Crittenden, {Robert G.} and Nichol, {Robert C.} and Ryan Scranton and Richards, {Gordon T.} and Myers, {Adam D.} and Brunner, {Robert J.} and Gray, {Alexander G.} and Connolly, {Andrew J.} and Schneider, {Donald P.}",

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High redshift detection of the integrated Sachs-Wolfe effect. / Giannantonio, Tommaso; Crittenden, Robert G.; Nichol, Robert C.; Scranton, Ryan; Richards, Gordon T.; Myers, Adam D.; Brunner, Robert J.; Gray, Alexander G.; Connolly, Andrew J.; Schneider, Donald P.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 74, No. 6, 063520, 2006.

Research output: Contribution to journal › Article › peer-review

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T1 - High redshift detection of the integrated Sachs-Wolfe effect

AU - Giannantonio, Tommaso

AU - Crittenden, Robert G.

AU - Nichol, Robert C.

AU - Scranton, Ryan

AU - Richards, Gordon T.

AU - Myers, Adam D.

AU - Brunner, Robert J.

AU - Gray, Alexander G.

AU - Connolly, Andrew J.

AU - Schneider, Donald P.

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AB - We present evidence of a large angle correlation between the cosmic microwave background measured by WMAP and a catalog of photometrically detected quasars from the SDSS. The observed cross correlation is 0.30±0.14μK at zero lag, with a shape consistent with that expected for correlations arising from the integrated Sachs-Wolfe effect. The photometric redshifts of the quasars are centered at z∼1.5, making this the deepest survey in which such a correlation has been observed. Assuming this correlation is due to the ISW effect, this constitutes the earliest evidence yet for dark energy and it can be used to constrain exotic dark energy models.

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