The Atacama Cosmology Telescope: a measurement of the Cosmic Microwave Background power spectra at 98 and 150 GHz

被引：201

作者：

Choi, Steve K. ^{[1
,2
,3
]}

Hasselfield, Matthew ^{[4
,5
,6
]}

Ho, Shuay-Pwu Patty ^{[3
]}

Koopman, Brian ^{[7
]}

Lungu, Marius ^{[3
,8
]}

Abitbol, Maximilian H. ^{[9
]}

Addison, Graeme E. ^{[10
]}

Ade, Peter A. R. ^{[11
]}

Aiola, Simone ^{[3
,4
]}

Alonso, David ^{[9
]}

Amiri, Mandana ^{[12
]}

Amodeo, Stefania ^{[2
]}

Angile, Elio ^{[8
]}

Austermann, Jason E. ^{[13
]}

Baildon, Taylor ^{[14
]}

Battaglia, Nick ^{[2
]}

Beall, James A. ^{[13
]}

Bean, Rachel ^{[2
]}

Becker, Daniel T. ^{[13
]}

Bond, J. Richard ^{[15
]}

Bruno, Sarah Marie ^{[3
]}

Calabrese, Erminia ^{[11
]}

Calafut, Victoria ^{[2
]}

Campusano, Luis E. ^{[16
]}

Carrero, Felipe ^{[17
]}

Chesmore, Grace E. ^{[18
]}

Cho, Hsiao-mei ^{[13
,19
]}

Clark, Susan E. ^{[20
]}

Cothard, Nicholas F. ^{[21
]}

Crichton, Devin ^{[22
]}

Crowley, Kevin T. ^{[3
,23
]}

Darwish, Omar ^{[24
]}

Datta, Rahul ^{[10
]}

Denison, Edward, V ^{[13
]}

Devlin, Mark J. ^{[8
]}

Duell, Cody J. ^{[1
]}

Duff, Shannon M. ^{[13
]}

Duivenvoorden, Adriaan J. ^{[3
]}

Dunkley, Jo ^{[3
,25
]}

Dunner, Rolando ^{[26
,27
]}

Essinger-Hileman, Thomas ^{[28
]}

Fankhanel, Max ^{[17
]}

Ferraro, Simone ^{[23
,29
]}

Fox, Anna E. ^{[13
]}

Fuzia, Brittany ^{[30
]}

Gallardo, Patricio A. ^{[1
]}

Gluscevic, Vera ^{[31
]}

Golec, Joseph E. ^{[18
]}

Grace, Emily ^{[3
]}

Gralla, Megan ^{[32
]}

机构：

[1] Cornell Univ, Dept Phys, Ithaca, NY 14853 USA

[2] Cornell Univ, Dept Astron, Ithaca, NY 14853 USA

[3] Princeton Univ, Joseph Henry Labs Phys, Jadwin Hall, Princeton, NJ 08544 USA

[4] Flatiron Inst, Ctr Computat Astrophys, 162 5th Ave, New York, NY 10010 USA

[5] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA

[6] Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA

[7] Yale Univ, Dept Phys, 217 Prospect St, New Haven, CT 06511 USA

[8] Univ Penn, Dept Phys & Astron, 209 South 33rd St, Philadelphia, PA 19104 USA

[9] Univ Oxford, Dept Phys, Keble Rd, Oxford OX1 3RH, England

[10] Johns Hopkins Univ, Dept Phys & Astron, 3400 N Charles St, Baltimore, MD 21218 USA

[11] Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, Wales

[12] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z4, Canada

[13] NIST, Quantum Devices Grp, 325 Broadway Mailcode 817-03, Boulder, CO 80305 USA

[14] Univ Michigan, Dept Phys, Ann Arbor, MI 48103 USA

[15] Univ Toronto, Canadian Inst Theoret Astrophys, Toronto, ON M5S 3H8, Canada

[16] Univ Chile, Dept Astron, Casilla 36-D, Santiago, Chile

[17] Soc Radiosky Asesorias Ingn Ltd, Camino Toconao 145-A, Ayllu De Solor, San Pedro De At, Chile

[18] Univ Chicago, Dept Phys, Chicago, IL 60637 USA

[19] SLAC Natl Accelerator Lab, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA

[20] Inst Adv Study, 1 Einstein Dr, Princeton, NJ 08540 USA

[21] Cornell Univ, Dept Appl & Engn Phys, Ithaca, NY 14853 USA

[22] Univ KwaZulu Natal, Astrophys Res Ctr, Sch Math Stat & Comp Sci, ZA-4001 Durban, South Africa

[23] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[24] Univ Cambridge, Ctr Math Sci, DAMTP, Wilberforce Rd, Cambridge CB3 OWA, England

[25] Princeton Univ, Dept Astrophys Sci, Peyton Hall, Princeton, NJ 08544 USA

[26] Pontificia Univ Catolica Chile, Fac Fis, Inst Astrofis, Av Vicuna Mackenna 4860, Santiago 7820436, Spain

[27] Pontificia Univ Catolica Chile, Fac Fis, Ctr Astroingn, Av Vicuna Mackenna 4860, Santiago 7820436, Chile

[28] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[29] Univ Calif Berkeley, Berkeley Ctr Cosmol Phys, LBL, Berkeley, CA 94720 USA

[30] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA

[31] Univ Southern Calif, Dept Phys & Astron, 825 Bloom Walk ACB 439, Los Angeles, CA 90089 USA

[32] Univ Arizona, Dept Astron, Steward Observ, 933 North Cherry Ave, Tucson, AZ 85721 USA

[33] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA

[34] SUNY Stony Brook, Phys & Astron Dept, Stony Brook, NY 11794 USA

[35] Columbia Univ, Dept Phys, New York, NY USA

[36] Univ Toronto, David A Dunlap Dept Astron & Astrophys, 50 St George St, Toronto, ON M5S 3H4, Canada

[37] Univ Toronto, Dunlap Inst Astron & Astrophys, 50 St George St, Toronto, ON M5S 3H4, Canada

[38] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA

[39] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

[40] Univ Paris Saclay, IJCLab, CNRS IN2P3, F-91405 Orsay, France

[41] Perimeter Inst Theoret Phys, Ctr Universe, Waterloo, ON N2L 2Y5, Canada

[42] Univ Chicago, Dept Astron & Astrophys, 5640 S Ellis Ave, Chicago, IL 60637 USA

[43] Univ Paris Saclay, CNRS, Inst Astrophys Spatiale, F-91405 Orsay, France

[44] Univ Chicago, Kavli Inst Cosmol Phys, 5640 S Ellis Ave, Chicago, IL 60637 USA

[45] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[46] Univ Illinois, Natl Ctr Supercomp Applicat NCSA, 1205 W Clark St, Urbana, IL 61801 USA

[47] Univ Illinois, Dept Astron, W Green St, Urbana, IL 61801 USA

[48] Univ Milano Bicocca, Dept Phys, Piazza Sci 3, I-20126 Milan, MI, Italy

[49] Haverford Coll, Dept Phys & Astron, Haverford, PA 19041 USA

[50] Inst Astron, Madingley Rd, Cambridge CB3 0HA, England

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2020年 / 12期

基金：

欧洲研究理事会; 加拿大创新基金会; 欧盟地平线“2020”; 美国国家科学基金会; 新加坡国家研究基金会; 加拿大自然科学与工程研究理事会;

关键词：

CMBR experiments; CMBR polarisation; cosmological parameters from CMBR; POLARIZATION; ARRAYS; DESIGN; PROBE;

D O I：

10.1088/1475-7516/2020/12/045

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the temperature and polarization angular power spectra of the CMB measured by the Atacama Cosmology Telescope (ACT) from 5400 deg(2) of the 2013-2016 survey, which covers >15000 deg(2) at 98 and 150 GHz. For this analysis we adopt a blinding strategy to help avoid confirmation bias and, related to this, show numerous checks for systematic error done before unblinding. Using the likelihood for the cosmological analysis we constrain secondary sources of anisotropy and foreground emission, and derive a "CMB-only" spectrum that extends to l = 4000. At large angular scales, foreground emission at 150 GHz is similar to 1% of TT and EE within our selected regions and consistent with that found by Planck. Using the same likelihood, we obtain the cosmological parameters for Lambda CDM for the ACT data alone with a prior on the optical depth of tau = 0.065 +/- 0.015. Lambda CDM is a good fit. The best-fit model has a reduced chi(2) of 1.07 (PTE = 0.07) with H-0 = 67.9 +/- 1.5 km/s/Mpc. We show that the lensing BB signal is consistent with Lambda CDM and limit the celestial EB polarization angle to psi(P) = 0.07 degrees +/- 0.09 degrees. We directly cross correlate ACT with Planck and observe generally good agreement but with some discrepancies in TE. All data on which this analysis is based will be publicly released.

引用

页数：72

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