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Hand, N, Leauthaud, A, Das, S, Sherwin, BD, Addison, GE, Bond, JR, Calabrese, E, Charbonnier, A, Devlin, MJ, Dunkley, J, Erben, T, Hajian, A, Halpern, M, Harnois-Déraps, J, Heymans, C, Hildebrandt, H, Hincks, AD, Kneib, J-P, Kosowsky, A, Makler, M , Miller, L, Moodley, K, Moraes, B, Niemack, MD, Page, LA, Partridge, B, Sehgal, N, Shan, H, Sievers, JL, Spergel, DN, Staggs, ST, Switzer, ER, Taylor, JE, Van Waerbeke, L, Welker, C and Wollack, EJ (2015) First measurement of the cross-correlation of CMB lensing and galaxy lensing. Physical Review D, 91 (6). ISSN 1550-7998
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First Measurement of the Cross-Correlation of CMB Lensing and Galaxy Lensing.pdf - Accepted Version Download (348kB) | Preview |
Abstract
We measure the cross-correlation of cosmic microwave background (CMB) lensing convergence maps derived from Atacama Cosmology Telescope data with galaxy lensing convergence maps as measured by the Canada-France-Hawaii Telescope Stripe 82 Survey. The CMB-galaxy lensing cross power spectrum is measured for the first time with a significance of 4.2σ, which corresponds to a 12% constraint on the amplitude of density fluctuations at redshifts ∼0.9. With upcoming improved lensing data, this novel type of measurement will become a powerful cosmological probe, providing a precise measurement of the mass distribution at intermediate redshifts and serving as a calibrator for systematic biases in weak lensing measurements.
| Item Type: | Article |
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| Uncontrolled Keywords: | 0201 Astronomical and Space Sciences, 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics, 0206 Quantum Physics |
| Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
| Divisions: | Astrophysics Research Institute |
| Publisher: | American Physical Society (APS) |
| Date Deposited: | 24 Jul 2020 11:23 |
| Last Modified: | 04 Sep 2021 06:55 |
| DOI or ID number: | 10.1103/physrevd.91.062001 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/13371 |
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