We report a 4.8σ measurement of the cross-correlation signal between the cosmic microwave background (CMB) lensing convergence reconstructed from measurements of the CMB polarization made by the Polarbear experiment and the infrared-selected galaxies of the Herschel-ATLAS survey. This is the first measurement of its kind. We infer a best-fit galaxy bias of b=5.76pm 1.25, corresponding to a host halo mass log10(Mh M⊙. =13.5+0.2-0.3 of at an effective redshift of z ∼ 2 from the cross-correlation power spectrum. Residual uncertainties in the redshift distribution of the submillimeter galaxies are subdominant with respect to the statistical precision. We perform a suite of systematic tests, finding that instrumental and astrophysical contaminations are small compared to the statistical error. This cross-correlation measurement only relies on CMB polarization information that, differently from CMB temperature maps, is less contaminated by galactic and extragalactic foregrounds, providing a clearer view of the projected matter distribution. This result demonstrates the feasibility and robustness of this approach for future high-sensitivity CMB polarization experiments.

Cross-correlation of cmb polarization lensing with high-z submillimeter Herschel-Atlas galaxies / Faundez, M. A.; Arnold, K.; Baccigalupi, C.; Barron, D.; Beck, D.; Bianchini, F.; Boettger, D.; Borrill, J.; Carron, J.; Cheung, K.; Chinone, Y.; Bouhargani, H. E.; Elleflot, T.; Errard, J.; Fabbian, G.; Feng, C.; Galitzki, N.; Goeckner-Wald, N.; Hasegawa, M.; Hazumi, M.; Howe, L.; Kaneko, D.; Katayama, N.; Keating, B.; Krachmalnicoff, N.; Kusaka, A.; Lee, A. T.; Leon, D.; Linder, E.; Lowry, L. N.; Matsuda, F.; Minami, Y.; Navaroli, M.; Nishino, H.; Pham, A. T. P.; Poletti, D.; Puglisi, G.; Reichardt, C. L.; Sherwin, B. D.; Silva-Feaver, M.; Stompor, R.; Suzuki, A.; Tajima, O.; Takakura, S.; Takatori, S.; Teply, G. P.; Tsai, C.; Verges, C.. - In: THE ASTROPHYSICAL JOURNAL. - ISSN 0004-637X. - 886:1(2019), p. 11. [10.3847/1538-4357/ab4a78]

Cross-correlation of cmb polarization lensing with high-z submillimeter Herschel-Atlas galaxies

Baccigalupi C.;Krachmalnicoff N.;Poletti D.;
2019

Abstract

We report a 4.8σ measurement of the cross-correlation signal between the cosmic microwave background (CMB) lensing convergence reconstructed from measurements of the CMB polarization made by the Polarbear experiment and the infrared-selected galaxies of the Herschel-ATLAS survey. This is the first measurement of its kind. We infer a best-fit galaxy bias of b=5.76pm 1.25, corresponding to a host halo mass log10(Mh M⊙. =13.5+0.2-0.3 of at an effective redshift of z ∼ 2 from the cross-correlation power spectrum. Residual uncertainties in the redshift distribution of the submillimeter galaxies are subdominant with respect to the statistical precision. We perform a suite of systematic tests, finding that instrumental and astrophysical contaminations are small compared to the statistical error. This cross-correlation measurement only relies on CMB polarization information that, differently from CMB temperature maps, is less contaminated by galactic and extragalactic foregrounds, providing a clearer view of the projected matter distribution. This result demonstrates the feasibility and robustness of this approach for future high-sensitivity CMB polarization experiments.
886
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https://iopscience.iop.org/article/10.3847/1538-4357/ab4a78
https://core.ac.uk/download/pdf/237444593.pdf
Faundez, M. A.; Arnold, K.; Baccigalupi, C.; Barron, D.; Beck, D.; Bianchini, F.; Boettger, D.; Borrill, J.; Carron, J.; Cheung, K.; Chinone, Y.; Bouhargani, H. E.; Elleflot, T.; Errard, J.; Fabbian, G.; Feng, C.; Galitzki, N.; Goeckner-Wald, N.; Hasegawa, M.; Hazumi, M.; Howe, L.; Kaneko, D.; Katayama, N.; Keating, B.; Krachmalnicoff, N.; Kusaka, A.; Lee, A. T.; Leon, D.; Linder, E.; Lowry, L. N.; Matsuda, F.; Minami, Y.; Navaroli, M.; Nishino, H.; Pham, A. T. P.; Poletti, D.; Puglisi, G.; Reichardt, C. L.; Sherwin, B. D.; Silva-Feaver, M.; Stompor, R.; Suzuki, A.; Tajima, O.; Takakura, S.; Takatori, S.; Teply, G. P.; Tsai, C.; Verges, C.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.11767/110414
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