Simulation Calibration of Cluster WL Mass Measurements with DC2 Joe - - PowerPoint PPT Presentation

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simulation calibration of cluster wl mass measurements

Simulation Calibration of Cluster WL Mass Measurements with DC2 Joe - - PowerPoint PPT Presentation

Jul 07, 2023 397 likes •580 views

Simulation Calibration of Cluster WL Mass Measurements with DC2 Joe Hollowed, Lindsey Bleem, Patricia Larsen, Nan Li, Steve Rangel, Salman Habib, Katrin Heitmann, Dan Korytov, Andrew Hearin, Eve Kovacs, + the Argonne CPAC and DC2 teams LSST

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Simulation Calibration of Cluster WL Mass Measurements with DC2

Joe Hollowed, Lindsey Bleem, Patricia Larsen, Nan Li, Steve Rangel, Salman Habib, Katrin Heitmann, Dan Korytov, Andrew Hearin, Eve Kovacs, + the Argonne CPAC and DC2 teams

LSST Dark Energy Science Collaboration Meeting 7/26/18

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SLIDE 2

LSST DESC Meeting - 7/26/18

J. Hollowed

WL-Mass Calibration Motivation Uncertainty in MOR is currently the limiting factor for cluster-based cosmology Direct mass calibration possible through weak gravitational lensing using N-body simulations Current WL calibration efforts limit systematic uncertainties to 5 —10% in cluster mass

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SLIDE 3

LSST DESC Meeting - 7/26/18

J. Hollowed

Base Simulations - HACC

Q-Continuum

Heitmann et al. 2014

Outer Rim

Joe Insley and Silvio Rizzi

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SLIDE 4

LSST DESC Meeting - 7/26/18

J. Hollowed

Q-Continuum

Heitmann et al. 2014

Lightcone Construction to Ray Tracing

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SLIDE 5

LSST DESC Meeting - 7/26/18

J. Hollowed

Lightcone Construction to Ray Tracing

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SLIDE 6

Cluster image from Benedikt Diemer

LSST DESC Meeting - 7/26/18

J. Hollowed

Lightcone Construction to Ray Tracing

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SLIDE 7

Cluster image from Benedikt Diemer

LSST DESC Meeting - 7/26/18

J. Hollowed

Lightcone Construction to Ray Tracing cosmoDC2: ➔ particle mass: ~1.8× 10¹¹ M☉h-1 ➔ lensing map pixelization: ~0.8’ … not sufficient!

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SLIDE 8

Cluster image from Benedikt Diemer

LSST DESC Meeting - 7/26/18

J. Hollowed

Lightcone Construction to Ray Tracing cosmoDC2: ➔ particle mass: ~1.8× 10¹¹ M☉h-1 ➔ lensing map pixelization: ~0.8’ … not sufficient!

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SLIDE 9

Cluster image from Benedikt Diemer

LSST DESC Meeting - 7/26/18

J. Hollowed

Lightcone Construction to Ray Tracing

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SLIDE 10

Cluster image from Benedikt Diemer

LSST DESC Meeting - 7/26/18

J. Hollowed

Lightcone Construction to Ray Tracing

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SLIDE 11

Cluster image from Benedikt Diemer

LSST DESC Meeting - 7/26/18

J. Hollowed

Lightcone Construction to Ray Tracing

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SLIDE 12

Halo Properties: z = 0.503

mass = 2.703⨯1014 M⊙ h-1

Ray Tracing: Source plane at z = 1

28 lens planes from 0 ≤ z ≤ 1 SPH particle smoothing

LSST DESC Meeting - 7/26/18

J. Hollowed

Simulated Cluster Lensing

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SLIDE 13

Base simulations: AlphaQuadrant:

256 (h-1Mpc)3 10243 particles 1.1×109 h-1M☉ mpp WMAP-7

OuterRim:

3000 (h-1Mpc)3 102403 particles 1.8×109 h-1M☉ mpp WMAP-7 Smaller simulation data more computationally affordable; will allow for convergence studies on ray-tracing strategy: LOS structure sampling? Density estimator? Pixelization for lensing maps? Cutout sizes? Redshift resolution (lens planes)?

LSST DESC Meeting - 7/26/18

J. Hollowed

Planned Data Products Lightcone products: AlphaQuadrant:

1% particles to z=3 Full particles to z=1 Halos to z=1 (~30k >1014)

OuterRim:

1% particles to z=3 Halos to z=3 (>100k > 1014)

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SLIDE 14

Base simulations: AlphaQuadrant:

256 (h-1Mpc)3 10243 particles 1.1×109 h-1M☉ mpp WMAP-7

OuterRim:

3000 (h-1Mpc)3 102403 particles 1.8×109 h-1M☉ mpp WMAP-7

LSST DESC Meeting - 7/26/18

J. Hollowed

Planned Data Products Lightcone products: AlphaQuadrant:

1% particles to z=3 Full particles to z=1 Halos to z=1 (~30k >1014)

OuterRim:

1% particles to z=3 Halos to z=3 (>100k > 1014) Smaller simulation data more computationally affordable; will allow for convergence studies on ray-tracing strategy: LOS structure sampling? Density estimator? Pixelization for lensing maps? Cutout sizes? Redshift resolution (lens planes)?

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SLIDE 15

Base simulations: AlphaQuadrant:

256 (h-1Mpc)3 10243 particles 1.1×109 h-1M☉ mpp WMAP-7

OuterRim:

3000 (h-1Mpc)3 102403 particles 1.8×109 h-1M☉ mpp WMAP-7

Lightcone products: AlphaQuadrant:

1% particles to z=3 Full particles to z=1 Halos to z=1 (~30k >1014)

OuterRim:

1% particles to z=3 Halos to z=3 (>100k > 1014) Conclusions inform parameters for larger-scale runs (larger lightcone volume and more unique halos)

Planned Data Products

Smaller simulation data more computationally affordable; will allow for convergence studies on ray-tracing strategy: LOS structure sampling? Density estimator? Pixelization for lensing maps? Cutout sizes? Redshift resolution (lens planes)?

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SLIDE 16

Halo fitting systematics: Spherically symmetric density profile (NFW) Mass-concentration relation Correlated LSS Miscentering Cluster Selection

LSST DESC Meeting - 7/26/18

J. Hollowed

WL-Mass Reconstruction Systematics

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SLIDE 17

Halo fitting systematics: Spherically symmetric density profile (NFW) Mass-concentration relation Correlated LSS Miscentering Cluster Selection

LSST DESC Meeting - 7/26/18

J. Hollowed

WL-Mass Reconstruction Systematics

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SLIDE 18

Halo fitting systematics: Spherically symmetric density profile (NFW) Mass-concentration relation Correlated LSS Miscentering Cluster Selection Extend to DC2 - Lensing systematics: ⟨β⟩ and ⟨β²⟩ estimation Foreground Contamination PSF Correction Intrinsic Alignment etc...

LSST DESC Meeting - 7/26/18

J. Hollowed

WL-Mass Reconstruction Systematics