Table 2. Open in new tab Best-fitting...

Model function	Parameter	Value
Region A
TBabs	N_H (10²² cm⁻²)	\|$1.75^{+0.10}_{-0.09}$\|
pegpwrlw	Γ	2.99 ± 0.05
	norm*	\|$10.46^{+0.27}_{-0.24}$\|
NEI	kT (keV)	\|$0.22^{+0.004}_{-0.02}$\|
	O (solar)	\|$0.27^{+0.38}_{-0.26}$\|
	Ne (solar)	\|$0.49^{+0.16}_{-0.12}$\|
	Mg (solar)	\|$0.76^{+0.17}_{-0.16}$\|
	Other elements (solar)	1 (fixed)
	τ (10¹⁰ s cm⁻³ )	\|$8.46^{+6.43}_{-2.32}$\|
	VEM^† (cm⁻³)	\|$9.41^{+4.70}_{-3.26}\times 10^{58}$\|
	χ²\|$/$\|d.o.f^‡	781.46\|$/$\|638
Region B
TBabs	N_H (10²² cm⁻²)	\|$1.33^{+0.19}_{-0.22}$\|
pegpwrlw	Γ	1.42 ± 0.10
	norm*	2.93 ± 0.16
NEI	kT (keV)	\|$0.93^{+0.17}_{-0.13}$\|
	O (solar)	0.27 (fixed)
	Ne (solar)	0.49 (fixed)
	Mg (solar)	0.76 (fixed)
	Other elements (solar)	1 (fixed)
	τ (10¹⁰ s cm⁻³ )	8.46 (fixed)
	VEM^† (cm⁻³)	1.89\|$^{+0.92}_{-0.64}\times 10^{56}$\|
	χ²/d.o.f^‡	659.69\|$/$\|642

Model function	Parameter	Value
Region A
TBabs	N_H (10²² cm⁻²)	\|$1.75^{+0.10}_{-0.09}$\|
pegpwrlw	Γ	2.99 ± 0.05
	norm*	\|$10.46^{+0.27}_{-0.24}$\|
NEI	kT (keV)	\|$0.22^{+0.004}_{-0.02}$\|
	O (solar)	\|$0.27^{+0.38}_{-0.26}$\|
	Ne (solar)	\|$0.49^{+0.16}_{-0.12}$\|
	Mg (solar)	\|$0.76^{+0.17}_{-0.16}$\|
	Other elements (solar)	1 (fixed)
	τ (10¹⁰ s cm⁻³ )	\|$8.46^{+6.43}_{-2.32}$\|
	VEM^† (cm⁻³)	\|$9.41^{+4.70}_{-3.26}\times 10^{58}$\|
	χ²\|$/$\|d.o.f^‡	781.46\|$/$\|638
Region B
TBabs	N_H (10²² cm⁻²)	\|$1.33^{+0.19}_{-0.22}$\|
pegpwrlw	Γ	1.42 ± 0.10
	norm*	2.93 ± 0.16
NEI	kT (keV)	\|$0.93^{+0.17}_{-0.13}$\|
	O (solar)	0.27 (fixed)
	Ne (solar)	0.49 (fixed)
	Mg (solar)	0.76 (fixed)
	Other elements (solar)	1 (fixed)
	τ (10¹⁰ s cm⁻³ )	8.46 (fixed)
	VEM^† (cm⁻³)	1.89\|$^{+0.92}_{-0.64}\times 10^{56}$\|
	χ²/d.o.f^‡	659.69\|$/$\|642

Table 2.

Best-fitting parameters of W 50-originated components.

Model function	Parameter	Value
Region A
TBabs	N_H (10²² cm⁻²)	\|$1.75^{+0.10}_{-0.09}$\|
pegpwrlw	Γ	2.99 ± 0.05
	norm*	\|$10.46^{+0.27}_{-0.24}$\|
NEI	kT (keV)	\|$0.22^{+0.004}_{-0.02}$\|
	O (solar)	\|$0.27^{+0.38}_{-0.26}$\|
	Ne (solar)	\|$0.49^{+0.16}_{-0.12}$\|
	Mg (solar)	\|$0.76^{+0.17}_{-0.16}$\|
	Other elements (solar)	1 (fixed)
	τ (10¹⁰ s cm⁻³ )	\|$8.46^{+6.43}_{-2.32}$\|
	VEM^† (cm⁻³)	\|$9.41^{+4.70}_{-3.26}\times 10^{58}$\|
	χ²\|$/$\|d.o.f^‡	781.46\|$/$\|638
Region B
TBabs	N_H (10²² cm⁻²)	\|$1.33^{+0.19}_{-0.22}$\|
pegpwrlw	Γ	1.42 ± 0.10
	norm*	2.93 ± 0.16
NEI	kT (keV)	\|$0.93^{+0.17}_{-0.13}$\|
	O (solar)	0.27 (fixed)
	Ne (solar)	0.49 (fixed)
	Mg (solar)	0.76 (fixed)
	Other elements (solar)	1 (fixed)
	τ (10¹⁰ s cm⁻³ )	8.46 (fixed)
	VEM^† (cm⁻³)	1.89\|$^{+0.92}_{-0.64}\times 10^{56}$\|
	χ²/d.o.f^‡	659.69\|$/$\|642

Model function	Parameter	Value
Region A
TBabs	N_H (10²² cm⁻²)	\|$1.75^{+0.10}_{-0.09}$\|
pegpwrlw	Γ	2.99 ± 0.05
	norm*	\|$10.46^{+0.27}_{-0.24}$\|
NEI	kT (keV)	\|$0.22^{+0.004}_{-0.02}$\|
	O (solar)	\|$0.27^{+0.38}_{-0.26}$\|
	Ne (solar)	\|$0.49^{+0.16}_{-0.12}$\|
	Mg (solar)	\|$0.76^{+0.17}_{-0.16}$\|
	Other elements (solar)	1 (fixed)
	τ (10¹⁰ s cm⁻³ )	\|$8.46^{+6.43}_{-2.32}$\|
	VEM^† (cm⁻³)	\|$9.41^{+4.70}_{-3.26}\times 10^{58}$\|
	χ²\|$/$\|d.o.f^‡	781.46\|$/$\|638
Region B
TBabs	N_H (10²² cm⁻²)	\|$1.33^{+0.19}_{-0.22}$\|
pegpwrlw	Γ	1.42 ± 0.10
	norm*	2.93 ± 0.16
NEI	kT (keV)	\|$0.93^{+0.17}_{-0.13}$\|
	O (solar)	0.27 (fixed)
	Ne (solar)	0.49 (fixed)
	Mg (solar)	0.76 (fixed)
	Other elements (solar)	1 (fixed)
	τ (10¹⁰ s cm⁻³ )	8.46 (fixed)
	VEM^† (cm⁻³)	1.89\|$^{+0.92}_{-0.64}\times 10^{56}$\|
	χ²/d.o.f^‡	659.69\|$/$\|642

The normalizations correspond to the flux, which is integrated over the energy range of 1.0–7.0 keV in this analysis.

†

Volume emission measure (VEM) is defined as ∫n_eN_H dV, where n_e, N_H, and V are the electron density, the hydrogen density, and the emitting volume, respectively.

‡

d.o.f: degree of freedom.

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