Deep XMM-Newton observation reveals extraplanar emission in NGC 5746

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Volume 709 (May 2026)

A&A, 709 (2026) A7

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Table 4.

Results of the spectral modeling.

Parameter	Model/Unit	Disk	Halo	East	West
cstat/d.o.f.	APEC only		1.12	1.10	1.09
kT	keV		$0 . 62_{- 0.08}^{+ 0.04}$ $Mathematical equation: $ 0.62^{+0.04}_{-0.08} $$	$0 . 75_{- 0.08}^{+ 0.07}$ $Mathematical equation: $ 0.75^{+0.07}_{-0.08} $$	$0 . 73_{- 0.11}^{+ 0.07}$ $Mathematical equation: $ 0.73^{+0.07}_{-0.11} $$
Z/Z_⊙			0.1	0.1	0.1
norm_apec	cm⁻⁵		$2 . 5_{- 0.2}^{+ 0.3} \cdot 10^{- 6}$ $Mathematical equation: $ 2.5^{+0.3}_{-0.2}\cdot10^{-6} $$	$3 . 0_{- 0.3}^{+ 0.3} \cdot 10^{- 6}$ $Mathematical equation: $ 3.0^{+0.3}_{-0.3}\cdot10^{-6} $$	$3 . 4_{- 0.3}^{+ 0.4} \cdot 10^{- 6}$ $Mathematical equation: $ 3.4^{+0.4}_{-0.3}\cdot10^{-6} $$
cstat/dof	APEC+POWERLAW	1.00	1.11	1.10	1.09
kT	keV	$0 . 30_{- 0.06}^{+ 0.34}$ $Mathematical equation: $ 0.30^{+0.34}_{-0.06} $$	$0 . 29_{- 0.03}^{+ 0.05}$ $Mathematical equation: $ 0.29^{+0.05}_{-0.03} $$	$0 . 39_{- 0.09}^{+ 0.17}$ $Mathematical equation: $ 0.39^{+0.17}_{-0.09} $$	$0 . 32_{- 0.05}^{+ 0.05}$ $Mathematical equation: $ 0.32^{+0.05}_{-0.05} $$
Z/Z_⊙		1.0	0.1	0.1	0.1
norm_apec	cm⁻⁵	$5 . 9_{- 3.3}^{+ 2.7} \cdot 10^{- 7}$ $Mathematical equation: $ 5.9^{+2.7}_{-3.3}\cdot10^{-7} $$	$2 . 6_{- 0.5}^{+ 0.5} \cdot 10^{- 6}$ $Mathematical equation: $ 2.6^{+0.5}_{-0.5}\cdot10^{-6} $$	$1 . 7_{- 0.6}^{+ 0.7} \cdot 10^{- 6}$ $Mathematical equation: $ 1.7^{+0.7}_{-0.6}\cdot10^{-6} $$	$3 . 6_{- 0.7}^{+ 0.9} \cdot 10^{- 6}$ $Mathematical equation: $ 3.6^{+0.9}_{-0.7}\cdot10^{-6} $$
Γ		$1 . 60_{- 0.09}^{+ 0.11}$ $Mathematical equation: $ 1.60^{+0.11}_{-0.09} $$	1.7	1.7	1.7
norm_PL	cts keV⁻¹ cm⁻² s⁻¹	$2 . 3_{- 0.2}^{+ 0.2} \cdot 10^{- 6}$ $Mathematical equation: $ 2.3^{+0.2}_{-0.2}\cdot10^{-6} $$	$5 . 2_{- 0.5}^{+ 0.5} \cdot 10^{- 7}$ $Mathematical equation: $ 5.2^{+0.5}_{-0.5}\cdot10^{-7} $$	$7 . 0_{- 0.9}^{+ 1.0} \cdot 10^{- 7}$ $Mathematical equation: $ 7.0^{+1.0}_{-0.9}\cdot10^{-7} $$	$5 . 7_{- 0.9}^{+ 0.7} \cdot 10^{- 7}$ $Mathematical equation: $ 5.7^{+0.7}_{-0.9}\cdot10^{-7} $$

Notes. Fit results for the disk, the halo out to r = 5 ′, and the two regions of enhanced emission. The top section of the table displays the results for the APEC only model; the lower section displays the results for the APEC+POWERLAW model. The metal abundance Z and the power-law indices of the halo regions were fixed to the presented values.

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