1. Interpreting High Resolution Sunyaev-Zel’dovich Effect Observations with MUSTANG Charles Romero University of Virginia, National Radio Astronomy Observatory 1

2. Jack Sayers (Caltech) Nicole Czakon (Sinica) Phil Korngut (JPL/Caltech) Collaborators Brian Mason (NRAO) Simon Dicker (UPenn) Alex Young (MIT-LL) Mark Devlin (UPenn) Erik Reese (Moorpark) Tony Mroczkowski (NRL) Jon Seivers (KwaZulu-Natal) Craig Sarazin (U Virginia) Tracy Clarke (NRL) Sunil Golwala (Caltech) Credit: NASA Key: Graduate Student, Postdoc, Faculty 2 08 January 2014 AAS Disertation Talk Charles Romero

3. Outline of Talk Galaxy Clusters – Why study them? SZ Observations – Substructure & Bulk ICM Fitted pressure profiles Future work & conclusions Uchicago, adapted from L. Van Sproyboeck 3 08 January 2014 AAS Disertation Talk Charles Romero

4. Cluster Mass  Cosmology Growth of structure Springel+ 2005 4 08 January 2014 AAS Disertation Talk Charles Romero

5. Cosmological Parameter Constraints Sehgal+ 2011 5 Without scatter in scaling relation With scatter in scaling relation 08 January 2014 AAS Disertation Talk Charles Romero

6. SZ surveys and scaling relations 6 Marriage+ 2011 Czakon+ 2014 Credit: M. Markevitch Y-M scaling relation 08 January 2014 AAS Disertation Talk Charles Romero

7. This Study: CLASH clusters 20 X-ray selected 5 lensing selected Multi-wavelength! Postman+ 2012 7 08 January 2014 AAS Disertation Talk Charles Romero

8. Outline of Talk Galaxy Clusters – Why study them? SZ Observations – Substructure & Bulk ICM Fitted pressure profiles Future work & conclusions Uchicago, adapted from L. Van Sproyboeck 8 08 January 2014 AAS Disertation Talk Charles Romero

9. MUSTANG’s view of CLASH (+1) 9 08 January 2014 AAS Disertation Talk Charles Romero

10. Studying the ICM: Radio (SZ) Credit: Ned Wright Sunyaev Zel’dovich Effect Δ I ∝ P e 10 MUSTANG 08 January 2014 AAS Disertation Talk Charles Romero

11. MUSTANG + GBT The Green Bank Telescope – Off-axis Gregorian design – 290 MHz to 100 GHz – 240 μm surface RMS – 90 GHz effective area : 2500 m 2 – 90 GHz beam size : 9" FWHM – 2” pointing accuracy MUSTANG – 64 absorber coupled TESs – 42” FOV – 400 μJy/beam in 3’ x 3’ per hour – Cold reimaging optics The science – Star Forming regions – Sunyaev-Zel’dovich Effect (SZE) 100 m 1 pixel 11 08 January 2014 AAS Disertation Talk Charles Romero

12. Data Processing: MUSTANG Filter out scales > FOV 12 08 January 2014 AAS Disertation Talk Charles Romero

13. MUSTANG results Korngut+ 2011 13 Mason+ 2010 08 January 2014 AAS Disertation Talk Charles Romero

14. MUSTANG results, cont. MACS 0717 Mroczkowski+ 2012 14 08 January 2014 AAS Disertation Talk Charles Romero

15. MUSTANG Beam 15 08 January 2014 AAS Disertation Talk Charles Romero

16. Point Source Removal 16 08 January 2014 AAS Disertation Talk Charles Romero

17. Outline of Talk Galaxy Clusters – Why study them? SZ Observations – Substructure & Bulk ICM Fitted pressure profiles Future work & conclusions Uchicago, adapted from L. Van Sproyboeck 17 08 January 2014 AAS Disertation Talk Charles Romero

18. Bolocam + MUSTANG 18 Bolocam (on the CSO) 8’ FOV 58” FWHM at 2.1mm (140 GHz) Bolocam Beam MUSTANG Beam 08 January 2014 AAS Disertation Talk Charles Romero

19. Pressure Profiles Previous studies have constrained these over their samples of clusters – Nagai 2007, Arnaud 2010, Planck 2012, and Sayers 2013 19 08 January 2014 AAS Disertation Talk Charles Romero

20. MACS 1206 (sequential fit) 20 Young et al. 2014 (arXiv:1411.0317) 08 January 2014 AAS Disertation Talk Charles Romero

21. MACS 0647 (sequential fit) 21 Young et al. 2014 (arXiv:1411.0317) 08 January 2014 AAS Disertation Talk Charles Romero

22. MACS 0647 (simultaneous fit!) 22 Romero et al. 2015 (arXiv: 1501.00187) Bolocam only Bolocam + MUSTANG 08 January 2014 AAS Disertation Talk Charles Romero

23. Abell 1835 23 Romero et al. 2015 (arXiv: 1501.00187) Bolocam only Bolocam + MUSTANG 08 January 2014 AAS Disertation Talk Charles Romero

24. Comparison of profile sets 24 MACS 0647 Abell 1835 08 January 2014 AAS Disertation Talk Charles Romero

25. Constraints over all clusters 08 January 2014 AAS Disertation Talk Charles Romero25

26. Subdivided 08 January 2014 AAS Disertation Talk Charles Romero26 Cool cores clearly have steeper core pressure profiles

27. Comparing Pressure Profiles 08 January 2014 AAS Disertation Talk Charles Romero27 Our sample shows more dispersion at large radii. Arnaud+ 2010

28. SZ + X-ray SZ is directly proportional to P e X-ray emissivity is proportional n e 2 T 1/2 – X-ray constrains n e well 08 January 2014 AAS Disertation Talk Charles Romero28 Constrain T e = P e(SZ) / n e(X) Constrain elongation along LOS (ε = [P e(x) / P e(SZ) ] 2 ) Constrain helium sedimentation

29. Helium Sedimentation: Models 08 January 2014 AAS Disertation Talk Charles Romero29 Proposed as early as Gilfanov+ 1984 Potential sedimentation calculated by Chuzhoy+ 2004, Peng & Nagai 2009 Some constraints from Markevitch 2007 Bulbul+ 2011 investigated impact on scaling relations Need high resolution SZ to do this! (scales < 0.1 * R 500 ) R 500 ~ 2-4 arcmin

30. Helium Sedimentation: Fitting I 08 January 2014 AAS Disertation Talk Charles Romero30 Must account for a global offset in pressure between SZ and X-ray Offset could be due to elongation along the LOS. Abell 1835MACS 1311

31. Helium Sedimentation: Fitting II 08 January 2014 AAS Disertation Talk Charles Romero31 Rescaled P e(SZ) can now be compared to P e(X) Fit model ratios to data.

32. Deriving Electron Temperatures 08 January 2014 AAS Disertation Talk Charles Romero32 Abell 1835MACS 1311 Blue = ACCEPT (Cavagnolo+ 2009) Red = ACCEPT2 (Baldi+ current work ) Green = This work Separate from cluster geometry (elongation) and He sedimentation modeling.

33. Outline of Talk Galaxy Clusters – Why study them? SZ Observations – Substructure & Bulk ICM Fitted pressure profiles Future work & conclusions Uchicago, adapted from L. Van Sproyboeck 33 08 January 2014 AAS Disertation Talk Charles Romero

34. Future Work: MUSTANG-1.5 Dicker et al. 2014 64 dual polarization feeds 75 – 105 GHz bandpass Antenna +Feedhorn coupled TES bolometers. 9” beam 2.5’ field of view on GBT (9” and 45” for MUSTANG) ~40 times faster mapping speeds On the telescope now! 34 08 January 2014 AAS Disertation Talk Charles Romero

35. Fall 2015: MUSTANG-1.5 64 detectors populated Several proposals for this fall – PIs: Dicker, Gilbank, Romero, Edge, Crichton 04 Sept. 2014 Caltech Lunch Talk Charles Romero35

36. Conclusions MUSTANG sees substructure and compact sources in many clusters – Substructure can reveal dynamics of the cluster Point sources can easily be dealt with. The addition of MUSTANG data to Bolocam does increase ability to constraint γ. MUSTANG-1.5 will do significantly better. 36 08 January 2014 AAS Disertation Talk Charles Romero

37. Future Work: NIKA-2 08 January 2014 AAS Disertation Talk Charles Romero37

38. Appendix 38 08 January 2014 AAS Disertation Talk Charles Romero Comparing Confidence intervals based on assumed centroid.

39. Y-M scaling relation http://arxiv.org/abs/1501.00317 – Liang Yu, Kaylea Nelson, and Daisuke Nagai – Also 340.03D talk yesterday 39 08 January 2014 AAS Disertation Talk Charles Romero

40. Abell 1835 A10 α and β 40 08 January 2014 AAS Disertation Talk Charles Romero

41. MACS 0647 A10 α and β 41 08 January 2014 AAS Disertation Talk Charles Romero

42. Correlation Matrix 42 08 January 2014 AAS Disertation Talk Charles Romero

43. Winter/Spring 2015: MUSTANG-1.5 64 detectors populated Several proposals for the spring PIs: Dicker, Gilbank, Romero, Edge, Crichton 43 08 January 2014 AAS Disertation Talk Charles Romero

44. Observing strategies 44 FOV 08 January 2014 AAS Disertation Talk Charles Romero

45. Abell 2146 ->Two shocks ->Cold front currently being observed by MUSTANG Chandra X-ray image -- Russell et al. (2010) Abell 2146

46. Galaxy Clusters Credit: NASA Vacca+ 2011 Optical X-ray 46 08 January 2014 AAS Disertation Talk Charles Romero