1. XCAL NuSTAR-XMM WITH COMA CLUSTER
Garhing, 26 March 2014
EPIC Calibration Meeting
XCAL NuSTAR-XMM WITH COMA CLUSTER
FABIO GASTALDELLO
INAF, IASF-Milano
NuSTAR calibration & cluster WG

2. ANALYSIS
Nearby cluster with a rather uniform high temperature distribution (7-9 keV). Its center observed mainly (but not only) for calibration purposes
NuSTAR analysis with nustardas1.3.1 and CALDB
XMM pn (doubles) analysis obsid December 2001 with SAS 12.0

3. COMA NUSTAR TEMPERATURE MAP
Boxes of 2 arcmin x 2 arcmin

4. COMA NUSTAR TEMPERATURE MAP
WIK+14

5. DET A

6. DET B

7. COMPARISON T A-B

8. CHECK WITH CHANDRA
SANDERS+13

9. COMPARISON WITH XMM pn

10. COMPARISON T A 3-20 keV-pn 0.5-10 keV
Mean of the ratio pn/A with stdev 0.084

11. COMPARISON T B 3-20 keV-pn 0.5-10 keV
Mean of the ratio pn/B with stdev 0.077

12. Mean of the ratio pn/A 1.185 with stdev 0.204
COMPARISON T A-pn keV
Mean of the ratio pn/A with stdev 0.204

13. Mean of the ratio pn/B 1.156 with stdev 0.189
COMPARISON T B-pn keV
Mean of the ratio pn/B with stdev 0.189

14. COMPARISON norm A 3-20 pn 0.5-10 keV
Mean of the ratio A/pn with stdev 0.137

15. COMPARISON norm B 3-20 pn 0.5-10 keV
Mean of the ratio B/pn with stdev 0.135

16. COMPARISON norm B 3-20 pn 0.5-10 keV
With nustardas and caldb
Mean of the ratio B/pn with stdev 0.158

17. XMM pn BROADBAND FIT
105/ ± 1.1 norm 3.1± 0.1 E keV

18. XMM pn BROADBAND FIT

19. XMM pn BROADBAND FIT
105/ ± 0.3 norm 3.5± 0.1 E keV

20. COMPARISON WITH XMM pn
pn and its bkg
nustar and its bkg

21. COMPARISON WITH XMM pn

22. SUMMARY
Nustar has the capabilities to constrain well hot thermal plasmas like the 8-9 keV emission in Coma
Comparison with XMM pn still stresses the problems with cluster broad band fitting (Nevalainen+10)
Future work: more XMM obervations, fit in varius energy band (2-7 keV), Fe line ratios