A Synergy of HSC and ACTPol Surveys Hironao Miyatake Princeton/Kavli IPMU 14年8月27日水曜日 Outline • • Overview of ACTPol • • • Observing plan Future update A synergy of HSC and ACTPol • • 14年8月27日水曜日 Recent results SZ map • • Cosmological constraints Cluster pressure profile CMB lensing Atacama Cosmology Telescope (ACT) High-resolution CMB observatory •Northern Chile, near ALMA site, at 5200m altitude •6m primary, off-axis Gregorian design → <1.5 arcmin FWHM beam • 3000 bolometers in 148, 218, 277 GHz •Survey: 2007-2010 Planck ACT Credit: A. Hajian 14年8月27日水曜日 •New camera for ACT • 3000 polarization sensitive bolometer arrays. •150 and 90 GHz •Sensitivity 4x better than ACT •Polarization! •Inflation and early universe physics •Neutrino masses •Survey started from 2013 14年8月27日水曜日 2013 Season Naess et al. (2014) COSMOS XMM-XXL, Stripe82 •Each field 70 deg2. •Noise level: 11 - 17 uK arcmin •All fields overlap with HSC and BOSS 14年8月27日水曜日 GAMA Stripe82 First Result Naess et al. (2014) 14年8月27日水曜日 AdvACTPol • Five bands (28, 41, 90, 150, 230 GHz) for better characterization of foregrounds. • Survey a half of sky for 3 years. • 20,000 galaxy clusters, 10000 lensed DSFGs • Full or significant overlap with HSC, DES, LSST, BOSS, PFS, DESI, eROSITA, ALMA 14年8月27日水曜日 HSCxACTPol 14年8月27日水曜日 Cluster Cosmology Hasselfield et al. (2013) •Constrain cosmology through cluster number counts. •SZ clusters will give a clean sample. •Systematics on mass estimate limits the accuracy. 14年8月27日水曜日 ACT result (15 clusters) Different Y-M relations Mass Calibration by WL Okabe et al. (2013) •Weak lensing (WL) measurement by HSC will provide unbiased mass estimates. •Caveat: Triaxiality/projection effect •Stacked lensing reduces these effects. 14年8月27日水曜日 Forecast Lensing calibration is powerful! 14年8月27日水曜日 Stacked Lensing Mass SN (for SZ-selected clusters) 14年8月27日水曜日 SZ x WL SZ map WL map •Cross correlation between Compton-y map (Planck) and WL mass map (CFHTLenS) supports isothermal β model •HSCxACTpol will provide high-resolution, high-SN signals. 14年8月27日水曜日 Planck 2013 results XXI (Note: not used in Van Van Waerbeke et al. (2013) Waerbeke et al., 2014) Van Waerbeke et al. (2014) Ma et al. (2014) CMB lensing x Galaxy lensing Credit: ESA 14年8月27日水曜日 CMB lensing x Galaxy lensing Van Waerbeke et al. (2013) 14年8月27日水曜日 CMB lensing x Galaxy lensing Van Waerbeke et al. (2013) 14年8月27日水曜日 CMB lensing x Galaxy lensing Van Waerbeke et al. (2013) 14年8月27日水曜日 CMB Lensing x Galaxy Lensing •Sensitivity to z 1 •Detection by ACT x CS82 • 30% Smaller than prediction •Contamination from Intrinsic alignment ? (Hall & Taylor (2014), Troxel & Ishak (2014)) Hand et al. (2013) 14年8月27日水曜日 Summary • The ACTPol survey is going on. • • • 14年8月27日水曜日 First result from 4 deep fields, in total 270deg2. Upgrade to AdvACTPol. A synergy between HSC and ACTPol • Calibrating cluster mass and SZ PDF by WL provides robust cosmological constraints. • Correlation between SZ and WL can probe the relationship between gas and dark matter. • Correlation between CMB lensing and WL can probe the universe at z 1, yet systematics need to be explored.
© Copyright 2024 ExpyDoc
