The SRG/eROSITA All-Sky Survey - SRG/eROSITA cross-calibration with Chandra and XMM-Newton using galaxy cluster gas temperatures

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Volume 688 (August 2024)

A&A, 688 (2024) A107

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Table 1.

Best-fit parameters for the eROSITA-Chandra and eROSITA-XMM-Newton scaling relations for all energy bands and fitting methods using the parametrization in Eqs. (2) and (5).

Comparison	Band	Method	A	B	σ_intr	σ_tot	ξ
		LMM	$- 0 . 129_{- 0.007}^{+ 0.008}$ $-0.129_{-0.007}^{+0.008}$	$0 . 781_{- 0.023}^{+ 0.020}$ $0.781_{-0.023}^{+0.020}$	0.046 ± 0.015	0.129 ± 0.008
	Full						−1.14
		BCES(orth)	$- 0 . 112_{- 0.008}^{+ 0.009}$ $-0.112_{-0.008}^{+0.009}$	$0 . 728_{- 0.029}^{+ 0.026}$ $0.728_{-0.029}^{+0.026}$	0.040 ± 0.006	0.116 ± 0.007
		LMM	−0.136 ± 0.008	0.772 ± 0.025	0.048 ± 0.018	0.131 ± 0.011
eROSITA-Chandra	Soft						−1.27
		BCES(orth)	−0.131 ± 0.009	$0 . 702_{- 0.030}^{+ 0.027}$ $0.702_{-0.030}^{+0.027}$	0.041 ± 0.006	0.114 ± 0.006
		LMM	−0.254 ± 0.021	0.638 ± 0.076	0.143 ± 0.024	0.271 ± 0.015
	Hard						−1.68
		BCES(orth)	−0.245 ± 0.038	$0 . 741_{- 0.151}^{+ 0.184}$ $0.741_{-0.151}^{+0.184}$	0.095 ± 0.012	$0 . 231_{- 0.016}^{+ 0.012}$ $0.231_{-0.016}^{+0.012}$

		LMM	$- 0 . 078_{- 0.017}^{+ 0.016}$ $-0.078_{-0.017}^{+0.016}$	$0 . 825_{- 0.066}^{+ 0.074}$ $0.825_{-0.066}^{+0.074}$	0.038 ± 0.019	0.164 ± 0.013
	Full						−0.41
		BCES(orth)	−0.047 ± 0.017	$0 . 747_{- 0.094}^{+ 0.082}$ $0.747_{-0.094}^{+0.082}$	0.067 ± 0.007	0.144 ± 0.009
		LMM	$- 0 . 065_{- 0.019}^{+ 0.018}$ $-0.065_{-0.019}^{+0.018}$	$0 . 869_{- 0.067}^{+ 0.073}$ $0.869_{-0.067}^{+0.073}$	0.027 ± 0.016	0.174 ± 0.014
eROSITA-XMM-Newton	Soft						−0.25
		BCES(orth)	−0.025 ± 0.020	$0 . 769_{- 0.116}^{+ 0.094}$ $0.769_{-0.116}^{+0.094}$	0.074 ± 0.009	0.156 ± 0.011
		LMM	$- 0 . 351_{- 0.036}^{+ 0.038}$ $-0.351_{-0.036}^{+0.038}$	$0 . 442_{- 0.182}^{+ 0.205}$ $0.442_{-0.182}^{+0.205}$	0.055 ± 0.039	0.263 ± 0.024
	Hard						−2.31
		BCES(orth)	$- 0 . 434_{- 0.041}^{+ 0.043}$ $-0.434_{-0.041}^{+0.043}$	$1 . 287_{- 0.400}^{+ 0.698}$ $1.287_{-0.400}^{+0.698}$	0.107 ± 0.041	0.279 ± 0.033

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