학술논문
Cross-correlation of POLARBEAR CMB Polarization Lensing with High-$z$ Sub-mm Herschel-ATLAS galaxies
Document Type
Working Paper
Author
Faundez, M. Aguilar; Arnold, K.; Baccigalupi, C.; Barron, D.; Beck, D.; Bianchini, F.; Boettger, D.; Borrill, J.; Carron, J.; Cheung, K.; Chinone, Y.; Bouhargani, H. El; 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.
Source
Subject
Language
Abstract
We report a 4.8$\sigma$ 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 $b = 5.76 \pm 1.25$, corresponding to a host halo mass of $\log_{10}(M_h/M_\odot) =13.5^{+0.2}_{-0.3}$ at an effective redshift of $z \sim 2$ from the cross-correlation power spectrum. Residual uncertainties in the redshift distribution of the sub-mm 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 extra-galactic 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.
Comment: 14 pages, 6 figures, updated to match published version on ApJ
Comment: 14 pages, 6 figures, updated to match published version on ApJ