We present measurements of the cosmic microwave background (CMB) power spectrum made by the Atacama Cosmology Telescope at 148 GHz and 218 GHz, as well as the cross-frequency spectrum between the two channels. Our results clearly show the second through the seventh acoustic peaks in the CMB power spectrum. The measurements of these higher-order peaks provide an additional test of the Lambda CDM cosmological model. At l > 3000, we detect power in excess of the primary anisotropy spectrum of the CMB. At lower multipoles 500 < l < 3000, we find evidence for gravitational lensing of the CMB in the power spectrum at the 2.8 sigma level. We also detect a low level of Galactic dust in our maps, which demonstrates that we can recover known faint, diffuse signals.

THE ATACAMA COSMOLOGY TELESCOPE: A MEASUREMENT OF THE COSMIC MICROWAVE BACKGROUND POWER SPECTRUM AT 148 AND 218 GHz FROM THE 2008 SOUTHERN SURVEY / Sudeep, Das; Tobias A., Marriage; Peter A. r., Ade; Paula, Aguirre; Mandana, Amiri; John W., Appel; L., Felipe Barrientos; BATTISTELLI, Elia Stefano; John R., Bond; B. e. n., Brown; Bryce, Burger; J. a. y., Chervenak; J., Devlin Mark; R., Dicker Simon; W., Bertrand Doriese; Joanna, Dunkley; Rolando, Dunner; Thomas Essinger, Hileman; P., Fisher Ryan; Joseph W., Fowler; Amir, Hajian; Halpern, Mark; Matthew, Hasselfield; Carlos Hernandez, Monteagudo; Gene C., Hilton; Matt, Hilton; Adam D., Hincks; Renee, Hlozek; M., Huffenberger Kevin; David H., Hughes; John P., Hughes; Leopoldo, Infante; D., Irwin Kent; Baptiste Juin, Jean; Kaul, Madhuri; Jeff, Klein; Arthur, Kosowsky; Judy M., Lau; Michele, Limon; Yen Ting, Lin; Robert H., Lupton; Danica, Marsden; Krista, Martocci; Phil, Mauskopf; Felipe, Menanteau; Kavilan, Moodley; Harvey, Moseley; Calvin B., Netterfield; Michael D., Niemack; Michael R., Nolta; Lyman A., Page; Parker, Lucas; Bruce, Partridge; Beth, Reid; Neelima, Sehgal; D., Sherwin Blake; Jon, Sievers; David N., Spergel; Suzanne T., Staggs; Daniel S., Swetz; Eric R., Switzer; Robert, Thornton; H. y., Trac; Carole, Tucker; Ryan, Warne; E. d., Wollack; Y. u. e., Zhao. - In: THE ASTROPHYSICAL JOURNAL. - ISSN 0004-637X. - 729:1(2011), pp. 62-77. [10.1088/0004-637x/729/1/62]

THE ATACAMA COSMOLOGY TELESCOPE: A MEASUREMENT OF THE COSMIC MICROWAVE BACKGROUND POWER SPECTRUM AT 148 AND 218 GHz FROM THE 2008 SOUTHERN SURVEY

BATTISTELLI, Elia Stefano;
2011

Abstract

We present measurements of the cosmic microwave background (CMB) power spectrum made by the Atacama Cosmology Telescope at 148 GHz and 218 GHz, as well as the cross-frequency spectrum between the two channels. Our results clearly show the second through the seventh acoustic peaks in the CMB power spectrum. The measurements of these higher-order peaks provide an additional test of the Lambda CDM cosmological model. At l > 3000, we detect power in excess of the primary anisotropy spectrum of the CMB. At lower multipoles 500 < l < 3000, we find evidence for gravitational lensing of the CMB in the power spectrum at the 2.8 sigma level. We also detect a low level of Galactic dust in our maps, which demonstrates that we can recover known faint, diffuse signals.
2011
color figures; cosmic background radiation; cosmic background radiation cosmology; cosmology: observations; observations online-only material
01 Pubblicazione su rivista::01a Articolo in rivista
THE ATACAMA COSMOLOGY TELESCOPE: A MEASUREMENT OF THE COSMIC MICROWAVE BACKGROUND POWER SPECTRUM AT 148 AND 218 GHz FROM THE 2008 SOUTHERN SURVEY / Sudeep, Das; Tobias A., Marriage; Peter A. r., Ade; Paula, Aguirre; Mandana, Amiri; John W., Appel; L., Felipe Barrientos; BATTISTELLI, Elia Stefano; John R., Bond; B. e. n., Brown; Bryce, Burger; J. a. y., Chervenak; J., Devlin Mark; R., Dicker Simon; W., Bertrand Doriese; Joanna, Dunkley; Rolando, Dunner; Thomas Essinger, Hileman; P., Fisher Ryan; Joseph W., Fowler; Amir, Hajian; Halpern, Mark; Matthew, Hasselfield; Carlos Hernandez, Monteagudo; Gene C., Hilton; Matt, Hilton; Adam D., Hincks; Renee, Hlozek; M., Huffenberger Kevin; David H., Hughes; John P., Hughes; Leopoldo, Infante; D., Irwin Kent; Baptiste Juin, Jean; Kaul, Madhuri; Jeff, Klein; Arthur, Kosowsky; Judy M., Lau; Michele, Limon; Yen Ting, Lin; Robert H., Lupton; Danica, Marsden; Krista, Martocci; Phil, Mauskopf; Felipe, Menanteau; Kavilan, Moodley; Harvey, Moseley; Calvin B., Netterfield; Michael D., Niemack; Michael R., Nolta; Lyman A., Page; Parker, Lucas; Bruce, Partridge; Beth, Reid; Neelima, Sehgal; D., Sherwin Blake; Jon, Sievers; David N., Spergel; Suzanne T., Staggs; Daniel S., Swetz; Eric R., Switzer; Robert, Thornton; H. y., Trac; Carole, Tucker; Ryan, Warne; E. d., Wollack; Y. u. e., Zhao. - In: THE ASTROPHYSICAL JOURNAL. - ISSN 0004-637X. - 729:1(2011), pp. 62-77. [10.1088/0004-637x/729/1/62]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/336665
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