Joint SZ/X-ray Analysis of the ICM using APEX-SZ Data
Kaustuv Basu (MPIfR Bonn / Universität Bonn)
with Martin Nord Yu-Ying Zhang Florian Pacaud & the APEX-SZ collaboration
Kaustuv Basu (MPIfR/Univ.Bonn) CL J2010+0628: ICM modeling with APEX-SZ data 1
Tuesday, June 29, 2010 The APEX-SZ Experiment
Telescope • 12 m ALMA prototype, located at 5100 m altitude in the Chilean Altiplano
Receiver • 300 pixel TES bolometer, PI instrument on APEX, commissioned in Spring 2007 • 1′ resolution, 0.4 deg FoV @ 150 GHz • About 7% sky time compared to SPT/ACT
Kaustuv Basu (MPIfR/Univ.Bonn) CL J2010+0628: ICM modeling with APEX-SZ data 2
Tuesday, June 29, 2010 Results from the APEX-SZ Experiment
23 sigma detection, 10.7 ± 0.8 keV 0.8 sq degrees with 1' resolution, ~40 hours 12 μK rms noise per 1' pixel
Total anisotropy < 105 μK2 at 95% CL
σ8 < 1.15 at 95% Power at 150 GHz dominated by dusty galaxies β-model fit Residual map Halverson et al. 2009 Reichardt et al. 2009
Kaustuv Basu (MPIfR/Univ.Bonn) CL J2010+0628: ICM modeling with APEX-SZ data 3
Tuesday, June 29, 2010 Results from the APEX-SZ Experiment APEX-SZ LABOCA 350 GHz LABOCA
APEX-SZ (150 GHz) + LABOCA (350 GHz) imaging of A2163 (Nord, KB, Pacaud et al. 2009)
Please see the poster from Florian Pacaud, on behalf of the APEX-SZ collaboration
Kaustuv Basu (MPIfR/Univ.Bonn) CL J2010+0628: ICM modeling with APEX-SZ data 4
Tuesday, June 29, 2010 The APEX-SZ clusters (and their XMM counterparts)
Kaustuv Basu (MPIfR/Univ.Bonn) CL J2010+0628: ICM modeling with APEX-SZ data 5
Tuesday, June 29, 2010 The APEX-SZ clusters (and their XMM counterparts)
~10
Kaustuv Basu (MPIfR/Univ.Bonn) CL J2010+0628: ICM modeling with APEX-SZ data relaxed 6
Tuesday, June 29, 2010 ICM Temperature De-projection
2 X-ray ~ ne Λ (Te)
SZE ~ ne Te
Abel's integral inversion to de-project density (SZE) observed ΔT(θ) (SZE) ne(r) Te(r) & temperature
Kaustuv Basu (MPIfR/Univ.Bonn) CL J2010+0628: ICM modeling with APEX-SZ data 7
Tuesday, June 29, 2010 ICM Temperature De-projection
Abell 2204
Prototypical relaxed cluster
Basu, Zhang et al. 2010, A&A SZ imagewith SZ contours X-ray X-ray imagewith X-ray contours SZ
X-ray (XMM) SZE (Apex)
Kaustuv Basu (MPIfR/Univ.Bonn) CL J2010+0628: ICM modeling with APEX-SZ data 8
Tuesday, June 29, 2010 ICM Temperature De-projection
Abell 2204
Prototypical relaxed cluster
Basu, Zhang et al. 2010, A&A SZ imagewith SZ contours X-ray X-ray imagewith X-ray contours SZ
Density Temperature
Kaustuv Basu (MPIfR/Univ.Bonn) CL J2010+0628: ICM modeling with APEX-SZ data 9
Tuesday, June 29, 2010 ICM Temperature Properties
SZ demonstration of falling gas SZ temperature in the cluster outskirts
Simulations ASCA Chandra
Statistical + Systematics
Statistical
Projected (“spectroskopic-like”) temperature and re-calibrated Chandra (88 ks) measurement
Kaustuv Basu (MPIfR/Univ.Bonn) CL J2010+0628: ICM modeling with APEX-SZ data 10
Tuesday, June 29, 2010 ICM Temperature Properties
SZ demonstration of falling gas SZ temperature in the cluster outskirts
Simulations ASCA Chandra
Stackingin Statistical + Systematics
progress Statistical
Projected (“spectroskopic-like”) temperature and re-calibrated Chandra (88 ks) measurement
Kaustuv Basu (MPIfR/Univ.Bonn) CL J2010+0628: ICM modeling with APEX-SZ data 11
Tuesday, June 29, 2010 ICM Entropy profiles
Entropy at the cluster outskirts Entropy is a fundamental property of the ICM, describing with Suzaku: George et al. its history of heating and cooling 2009, Bautz et al. 2009, Kawaharada et al 2010
A2204
Chandra (George et al. 2009)
Entropy profile derived from SZ/X-ray imaging: Basu, Zhang et al. 2010, A&A
Kaustuv Basu (MPIfR/Univ.Bonn) CL J2010+0628: ICM modeling with APEX-SZ data 12
Tuesday, June 29, 2010 Summary & Outlook
Analysis of the intra-cluster medium (ICM) with resolved SZE maps have become a reality (quite some way to catch up with the sophistication and depth of the X-ray spectral analysis).
We have performed the first non-parametric joint X-ray/SZE modeling of ICM properties (A2163, A2204) out to r200. Stacking analysis in progress, also combination with Suzaku data.
Multi-pixel bolometer imaging data is now able to verify ICM entropy the features at the cluster core, and also the dropping gas temperature at large radii, independent of X-ray spectroscopy.
With better control of SZE statistical and X-ray background uncertainties, we can go beyond r200 with available instruments.
Kaustuv Basu (MPIfR/Univ.Bonn) CL J2010+0628: ICM modeling with APEX-SZ data 13
Tuesday, June 29, 2010