The atacama cosmology telescope: A measurement of the primordial power spectrum

Renée Hlozek; Joanna Dunkley; Graeme Addison; John William Appel; J. Richard Bond; C. Sofia Carvalho; Sudeep Das; Mark J. Devlin; Rolando Dünner; Thomas Essinger-Hileman; Joseph W. Fowler; Patricio Gallardo; Amir Hajian; Mark Halpern; Matthew Hasselfield; Matt Hilton; Adam D. Hincks; John P. Hughes; Kent D. Irwin; Jeff Klein; Arthur Kosowsky; Tobias A. Marriage; Danica Marsden; Felipe Menanteau; Kavilan Moodley; Michael D. Niemack; Michael R. Nolta; Lyman A. Page; Lucas Parker; Bruce Partridge; Felipe Rojas; Neelima Sehgal; Blake Sherwin; Jon Sievers; David N. Spergel; Suzanne T. Staggs; Daniel S. Swetz; Eric R. Switzer; Robert Thornton; Ed Wollack

doi:10.1088/0004-637X/749/1/90

The atacama cosmology telescope: A measurement of the primordial power spectrum

Renée Hlozek, Joanna Dunkley, Graeme Addison, John William Appel, J. Richard Bond, C. Sofia Carvalho, Sudeep Das, Mark J. Devlin, Rolando Dünner, Thomas Essinger-Hileman, Joseph W. Fowler, Patricio Gallardo, Amir Hajian, Mark Halpern, Matthew Hasselfield, Matt Hilton, Adam D. Hincks, John P. Hughes, Kent D. Irwin, Jeff KleinArthur Kosowsky, Tobias A. Marriage, Danica Marsden, Felipe Menanteau, Kavilan Moodley, Michael D. Niemack, Michael R. Nolta, Lyman A. Page, Lucas Parker, Bruce Partridge, Felipe Rojas, Neelima Sehgal, Blake Sherwin, Jon Sievers, David N. Spergel, Suzanne T. Staggs, Daniel S. Swetz, Eric R. Switzer, Robert Thornton, Ed Wollack

Astronomy & Astrophysics

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Abstract

We present constraints on the primordial power spectrum of adiabatic fluctuations using data from the 2008 Southern Survey of the Atacama Cosmology Telescope (ACT) in combination with measurements from the Wilkinson Microwave Anisotropy Probe and a prior on the Hubble constant. The angular resolution of ACT provides sensitivity to scales beyond ℓ = 1000 for resolution of multiple peaks in the primordial temperature power spectrum, which enables us to probe the primordial power spectrum of adiabatic scalar perturbations with wavenumbers up to k ≃ 0.2Mpc^-1. We find no evidence for deviation from power-law fluctuations over two decades in scale. Matter fluctuations inferred from the primordial temperature power spectrum evolve over cosmic time and can be used to predict the matter power spectrum at late times; we illustrate the overlap of the matter power inferred from cosmic microwave background measurements (which probe the power spectrum in the linear regime) with existing probes of galaxy clustering, cluster abundances, and weak-lensing constraints on the primordial power. This highlights the range of scales probed by current measurements of the matter power spectrum.

Original language	English (US)
Article number	90
Journal	Astrophysical Journal
Volume	749
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/749/1/90
State	Published - Apr 10 2012

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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Hlozek, R., Dunkley, J., Addison, G., Appel, J. W., Bond, J. R., Carvalho, C. S., Das, S., Devlin, M. J., Dünner, R., Essinger-Hileman, T., Fowler, J. W., Gallardo, P., Hajian, A., Halpern, M., Hasselfield, M., Hilton, M., Hincks, A. D., Hughes, J. P., Irwin, K. D., ... Wollack, E. (2012). The atacama cosmology telescope: A measurement of the primordial power spectrum. Astrophysical Journal, 749(1), Article 90. https://doi.org/10.1088/0004-637X/749/1/90

@article{35eeed93fb0b4e6981c15cd655b8f36e,

title = "The atacama cosmology telescope: A measurement of the primordial power spectrum",

abstract = "We present constraints on the primordial power spectrum of adiabatic fluctuations using data from the 2008 Southern Survey of the Atacama Cosmology Telescope (ACT) in combination with measurements from the Wilkinson Microwave Anisotropy Probe and a prior on the Hubble constant. The angular resolution of ACT provides sensitivity to scales beyond ℓ = 1000 for resolution of multiple peaks in the primordial temperature power spectrum, which enables us to probe the primordial power spectrum of adiabatic scalar perturbations with wavenumbers up to k ≃ 0.2Mpc-1. We find no evidence for deviation from power-law fluctuations over two decades in scale. Matter fluctuations inferred from the primordial temperature power spectrum evolve over cosmic time and can be used to predict the matter power spectrum at late times; we illustrate the overlap of the matter power inferred from cosmic microwave background measurements (which probe the power spectrum in the linear regime) with existing probes of galaxy clustering, cluster abundances, and weak-lensing constraints on the primordial power. This highlights the range of scales probed by current measurements of the matter power spectrum.",

author = "Ren{\'e}e Hlozek and Joanna Dunkley and Graeme Addison and Appel, {John William} and Bond, {J. Richard} and Carvalho, {C. Sofia} and Sudeep Das and Devlin, {Mark J.} and Rolando D{\"u}nner and Thomas Essinger-Hileman and Fowler, {Joseph W.} and Patricio Gallardo and Amir Hajian and Mark Halpern and Matthew Hasselfield and Matt Hilton and Hincks, {Adam D.} and Hughes, {John P.} and Irwin, {Kent D.} and Jeff Klein and Arthur Kosowsky and Marriage, {Tobias A.} and Danica Marsden and Felipe Menanteau and Kavilan Moodley and Niemack, {Michael D.} and Nolta, {Michael R.} and Page, {Lyman A.} and Lucas Parker and Bruce Partridge and Felipe Rojas and Neelima Sehgal and Blake Sherwin and Jon Sievers and Spergel, {David N.} and Staggs, {Suzanne T.} and Swetz, {Daniel S.} and Switzer, {Eric R.} and Robert Thornton and Ed Wollack",

year = "2012",

month = apr,

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doi = "10.1088/0004-637X/749/1/90",

language = "English (US)",

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journal = "Astrophysical Journal",

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Hlozek, R, Dunkley, J, Addison, G, Appel, JW, Bond, JR, Carvalho, CS, Das, S, Devlin, MJ, Dünner, R, Essinger-Hileman, T, Fowler, JW, Gallardo, P, Hajian, A, Halpern, M, Hasselfield, M, Hilton, M, Hincks, AD, Hughes, JP, Irwin, KD, Klein, J, Kosowsky, A, Marriage, TA, Marsden, D, Menanteau, F, Moodley, K, Niemack, MD, Nolta, MR, Page, LA, Parker, L, Partridge, B, Rojas, F, Sehgal, N, Sherwin, B, Sievers, J, Spergel, DN, Staggs, ST, Swetz, DS, Switzer, ER, Thornton, R & Wollack, E 2012, 'The atacama cosmology telescope: A measurement of the primordial power spectrum', Astrophysical Journal, vol. 749, no. 1, 90. https://doi.org/10.1088/0004-637X/749/1/90

TY - JOUR

T1 - The atacama cosmology telescope

T2 - A measurement of the primordial power spectrum

AU - Hlozek, Renée

AU - Dunkley, Joanna

AU - Addison, Graeme

AU - Appel, John William

AU - Bond, J. Richard

AU - Carvalho, C. Sofia

AU - Das, Sudeep

AU - Devlin, Mark J.

AU - Dünner, Rolando

AU - Essinger-Hileman, Thomas

AU - Fowler, Joseph W.

AU - Gallardo, Patricio

AU - Hajian, Amir

AU - Halpern, Mark

AU - Hasselfield, Matthew

AU - Hilton, Matt

AU - Hincks, Adam D.

AU - Hughes, John P.

AU - Irwin, Kent D.

AU - Klein, Jeff

AU - Kosowsky, Arthur

AU - Marriage, Tobias A.

AU - Marsden, Danica

AU - Menanteau, Felipe

AU - Moodley, Kavilan

AU - Niemack, Michael D.

AU - Nolta, Michael R.

AU - Page, Lyman A.

AU - Parker, Lucas

AU - Partridge, Bruce

AU - Rojas, Felipe

AU - Sehgal, Neelima

AU - Sherwin, Blake

AU - Sievers, Jon

AU - Spergel, David N.

AU - Staggs, Suzanne T.

AU - Swetz, Daniel S.

AU - Switzer, Eric R.

AU - Thornton, Robert

AU - Wollack, Ed

PY - 2012/4/10

Y1 - 2012/4/10

N2 - We present constraints on the primordial power spectrum of adiabatic fluctuations using data from the 2008 Southern Survey of the Atacama Cosmology Telescope (ACT) in combination with measurements from the Wilkinson Microwave Anisotropy Probe and a prior on the Hubble constant. The angular resolution of ACT provides sensitivity to scales beyond ℓ = 1000 for resolution of multiple peaks in the primordial temperature power spectrum, which enables us to probe the primordial power spectrum of adiabatic scalar perturbations with wavenumbers up to k ≃ 0.2Mpc-1. We find no evidence for deviation from power-law fluctuations over two decades in scale. Matter fluctuations inferred from the primordial temperature power spectrum evolve over cosmic time and can be used to predict the matter power spectrum at late times; we illustrate the overlap of the matter power inferred from cosmic microwave background measurements (which probe the power spectrum in the linear regime) with existing probes of galaxy clustering, cluster abundances, and weak-lensing constraints on the primordial power. This highlights the range of scales probed by current measurements of the matter power spectrum.

AB - We present constraints on the primordial power spectrum of adiabatic fluctuations using data from the 2008 Southern Survey of the Atacama Cosmology Telescope (ACT) in combination with measurements from the Wilkinson Microwave Anisotropy Probe and a prior on the Hubble constant. The angular resolution of ACT provides sensitivity to scales beyond ℓ = 1000 for resolution of multiple peaks in the primordial temperature power spectrum, which enables us to probe the primordial power spectrum of adiabatic scalar perturbations with wavenumbers up to k ≃ 0.2Mpc-1. We find no evidence for deviation from power-law fluctuations over two decades in scale. Matter fluctuations inferred from the primordial temperature power spectrum evolve over cosmic time and can be used to predict the matter power spectrum at late times; we illustrate the overlap of the matter power inferred from cosmic microwave background measurements (which probe the power spectrum in the linear regime) with existing probes of galaxy clustering, cluster abundances, and weak-lensing constraints on the primordial power. This highlights the range of scales probed by current measurements of the matter power spectrum.

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U2 - 10.1088/0004-637X/749/1/90

DO - 10.1088/0004-637X/749/1/90

M3 - Article

AN - SCOPUS:84859137666

SN - 0004-637X

VL - 749

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

M1 - 90

ER -

The atacama cosmology telescope: A measurement of the primordial power spectrum

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