Measuring the Pairwise Kinematic Sunyaev-Zeldovich Effect with the - PowerPoint PPT Presentation

Measuring the Pairwise Kinematic Sunyaev-Zel’dovich Effect with the Atacama Cosmology Telescope e -­‑ ¡ Eve M. Vavagiakis Cornell University

The Sunyaev-Zel’dovich Effects e -­‑ ¡ Adapted from L. Van Speybroeck, UChicago Astro. ESA and the Planck Collaboration, 2013 ACT Collaboration Thermal SZ effect • (tSZ): Δ T ∝ integrated electron pressure 1 ¡ Eve M. Vavagiakis, Cornell University

The Sunyaev-Zel’dovich Effects e -­‑ ¡ Adapted from L. Van Speybroeck, UChicago Astro. ESA and the Planck Collaboration, 2013 ACT Collaboration Thermal SZ effect • (tSZ): Δ T ∝ integrated electron pressure Kinematic SZ effect • (kSZ): Δ T ∝ line of sight momentum Sudeep Das, UC Berkeley 1 ¡ Eve M. Vavagiakis, Cornell University

The Sunyaev-Zel’dovich Effects e -­‑ ¡ Adapted from L. Van Speybroeck, UChicago Astro. ESA and the Planck Collaboration, 2013 ACT Collaboration Thermal SZ effect • (tSZ): Δ T ∝ integrated electron pressure Kinematic SZ effect • (kSZ): Δ T ∝ line of sight momentum Sudeep Das, UC Berkeley 1 ¡ Mittal et al. (2017), in prep. Eve M. Vavagiakis, Cornell University

The Sunyaev-Zel’dovich Effects e -­‑ ¡ Adapted from L. Van Speybroeck, UChicago Astro. ESA and the Planck Collaboration, 2013 ACT Collaboration Thermal SZ effect • (tSZ): Δ T ∝ integrated electron pressure Kinematic SZ effect • (kSZ): Δ T ∝ line of sight momentum Sudeep Das, UC Berkeley 1 ¡ Mittal et al. (2017), in prep. Eve M. Vavagiakis, Cornell University

Motivation: Pairwise kSZ ¡ • Massive neutrinos affect growth of structure Σ m v = 1.9 eV ¡ Σ m v = 0 eV ¡ S. Agarwal, H. Feldman, Mon. Not. R. Astron. Soc. (2011) 2 ¡ Eve M. Vavagiakis, Cornell University

Motivation: Pairwise kSZ ¡ • Massive neutrinos affect growth of structure • kSZ effect probes peculiar velocities at cosmological distances Hyper-Kamiokande (2015) E.-M. Mueller, F. de Bernardis, R. Bean, M. Niemack (2014), 1412.0592 3 ¡ Eve M. Vavagiakis, Cornell University

Motivation: Pairwise kSZ ¡ • Massive neutrinos affect growth of structure • kSZ effect probes peculiar velocities at cosmological distances • Constrain Σ m v • Probe gravity and dark energy • With kSZ information from CMB-S4: Minimal Λ MDM General Λ MDM General Λ MDM 0 . 8 Planck 0 . 7 kSZ+Planck Planck+len 0 . 6 kSZ+Planck+len 0 . 5 P m ν 0 . 4 0 . 3 0 . 2 0 . 1 0 . 0 0 . 120 0 . 122 0 . 124 0 . 126 0 . 128 − 3 . 0 − 2 . 5 − 2 . 0 − 1 . 5 − 1 . 0 − 0 . 5 0 . 0 0 . 5 1 . 0 − 4 − 3 − 2 − 1 0 1 2 3 4 Ω m h 2 w 0 w a E.-M. Mueller, F. de Bernardis, R. Bean, M. Niemack (2014), 1412.0592 4 ¡ Eve M. Vavagiakis, Cornell University

Atacama Cosmology Telescope Polarimeter (ACTPol) Data • 6 meter Cosmic Microwave Background (CMB) telescope • Cerro Toco, Atacama Desert, Chile ACT Collaboration 5 ¡ Eve M. Vavagiakis, Cornell University

Atacama Cosmology Telescope Polarimeter (ACTPol) Data 150 GHz 700 deg 2 • 6 meter Cosmic Microwave Background (CMB) telescope • Cerro Toco, Atacama Desert, Chile ACT Collaboration ACT Collaboration ACT Collaboration 5 ¡ Eve M. Vavagiakis, Cornell University

BOSS-SDSS Data DR11 Galaxies ~68,000 sources 600 deg 2 ACT Collaboration 6 ¡ Eve M. Vavagiakis, Cornell University F. de Bernardis, S. Aiola, E.M. Vavagiakis, M.D. Niemack (2016), 1607.02139

BOSS-SDSS Data DR11 Galaxies ~68,000 sources 600 deg 2 Number of sources per redshift bin ACT Collaboration 6 ¡ Eve M. Vavagiakis, Cornell University F. de Bernardis, S. Aiola, E.M. Vavagiakis, M.D. Niemack (2016), 1607.02139

BOSS-SDSS Data DR11 Galaxies ~68,000 sources 600 deg 2 Overlaps with ~2.5x as many • Number of sources per redshift bin sources as used in previous ACT measurement Previous result: Hand 2012 using DR9 ACT Collaboration 6 ¡ Eve M. Vavagiakis, Cornell University F. de Bernardis, S. Aiola, E.M. Vavagiakis, M.D. Niemack (2016), 1607.02139

Pairwise Estimator Linear differences of temperatures at cluster positions average out other signals: c ij ij geometrical factor, depends on z. For each source: Need optical depth to get velocities! Sudeep Das, UC Berkeley 7 ¡ Eve M. Vavagiakis, Cornell University

Results Pairwise momentum and best fit model 4 σ measurement of kSZ effect over a • range of luminosity cuts 20000 sources Pairwise momentum, various L cuts 8 ¡ Eve M. Vavagiakis, Cornell University F. de Bernardis, S. Aiola, E.M. Vavagiakis, M.D. Niemack (2016), 1607.02139

Results Pairwise momentum and best fit model 4 σ measurement of kSZ effect over a • range of luminosity cuts 20000 sources CMB simulations, jackknife evaluation, • bootstrap estimates Measurement consistent with Planck, • SPT, DES Pairwise momentum, various L cuts Binned covariance matrix from simulations 8 ¡ Eve M. Vavagiakis, Cornell University F. de Bernardis, S. Aiola, E.M. Vavagiakis, M.D. Niemack (2016), 1607.02139

Results: Cluster Optical Depths tSZ signal and cluster simulations • could convert pairwise momentum into velocity: necessary for cosmology Pairwise momentum, various L cuts 9 ¡ Eve M. Vavagiakis, Cornell University F. de Bernardis, S. Aiola, E.M. Vavagiakis, M.D. Niemack (2016), 1607.02139

Results: Cluster Optical Depths tSZ signal and cluster simulations • could convert pairwise momentum from tSZ vs. from kSZ into velocity: necessary for cosmology Battaglia (2016) hydrodynamical • simulations extract optical depths from tSZ signal Future: measure optical depths • directly Pairwise momentum, various L cuts 9 ¡ Eve M. Vavagiakis, Cornell University F. de Bernardis, S. Aiola, E.M. Vavagiakis, M.D. Niemack (2016), 1607.02139

Future ¡ Upcoming data from ACTPol and Advanced ACTPol • ACTPol BOSS North area ~277,000 DR12 sources ACT Collaboration Simons Observatory 10 ¡ Eve M. Vavagiakis, Cornell University

Future ¡ Upcoming data from ACTPol and Advanced ACTPol • Improved measurements with CCAT-prime, Simons Observatory, CMB-S4 • CCAT-prime: • 6m aperture off-axis sub-mm telescope • 5600m elevation on Cerro Chajnantor Vertex ACT Collaboration Simons Observatory 11 ¡ Mittal et al. (2017), in prep. Eve M. Vavagiakis, Cornell University

Future ¡ Upcoming data from ACTPol and Advanced ACTPol • Improved measurements with CCAT-prime, Simons Observatory, CMB-S4 • Simons Observatory: • Array of several new CMB telescopes • 5200m elevation on Cerro Toco in Chile ACT Collaboration Simons Observatory 12 ¡ Eve M. Vavagiakis, Cornell University

Conclusions ¡ Pairwise kSZ signal poised to become cosmological tool able to constrain • fundamental physics New CMB maps from ACTPol and AdvACT observations and future • surveys will improve SZ measurements Learn more: CMB-S4 Science Book CMB-S4 Science Book [arXiv:1610.02743] CMB-S4 T CMB-S4 Technology Book echnology Book [arXiv:1706.02464] Present @SimonsObs 2025 ¡ 13 ¡ Eve M. Vavagiakis, Cornell University