Hard X-ray view of two γ-ray-detected low-luminosity active galactic nuclei: NGC 315 and NGC 4261

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Table 6.

Best-fit spectral parameters from XMM-Newton observations at different radii for NGC 4261.

Parameter	r = 30″	r = 40″	r = 50″
N_H1^(a) (10²² cm⁻²)	$8 . 80_{- 0.86}^{+ 0.97}$ $8.80^{+0.97}_{-0.86}$	$8 . 72_{- 0.89}^{+ 0.99}$ $8.72^{+0.99}_{-0.89}$	$8 . 66_{- 0.89}^{+ 0.99}$ $8.66^{+0.99}_{-0.89}$
N_H2^(a) (10²² cm⁻²)	0.14 ± 0.05	0.20 ± 0.05	$0 . 22_{- 0.04}^{+ 0.05}$ $0.22^{+0.05}_{-0.04}$
Γ₁^(a)	$2 . 09_{- 0.12}^{+ 0.13}$ $2.09^{+0.13}_{-0.12}$	$2 . 07_{- 0.13}^{+ 0.14}$ $2.07^{+0.14}_{-0.13}$	$2 . 09_{- 0.13}^{+ 0.14}$ $2.09^{+0.14}_{-0.13}$
Γ₂^(a)	$2 . 89_{- 0.33}^{+ 0.34}$ $2.89^{+0.34}_{-0.33}$	$3 . 09_{- 0.30}^{+ 0.31}$ $3.09^{+0.31}_{-0.30}$	$3 . 23_{- 0.28}^{+ 0.29}$ $3.23^{+0.29}_{-0.28}$
E_gaussian (keV)	$6 . 76_{- 0.12}^{+ 0.11}$ $6.76^{+0.11}_{-0.12}$	$6 . 77_{- 0.12}^{+ 0.13}$ $6.77^{+0.13}_{-0.12}$	6.68 ± 0.14
σ_gaussian (keV)	$0 . 22_{- 0.17}^{+ 0.12}$ $0.22^{+0.12}_{-0.17}$	$0 . 15_{- 0.13}^{+ 0.11}$ $0.15^{+0.11}_{-0.13}$	$0 . 22_{- 0.17}^{+ 0.13}$ $0.22^{+0.13}_{-0.17}$
EW (keV)	$0 . 15_{- 0.06}^{+ 0.05}$ $0.15^{+0.05}_{-0.06}$	$0 . 10_{- 0.02}^{+ 0.06}$ $0.10^{+0.06}_{-0.02}$	0.09 ± 0.05
Norm1 ^(a) (10⁻⁵)	$43 . 75_{- 8.64}^{+ 11.71}$ $43.75^{+11.71}_{-8.64}$	$43 . 73_{- 8.93}^{+ 12.23}$ $43.73^{+12.23}_{-8.93}$	$47 . 03_{- 9.75}^{+ 13.35}$ $47.03^{+13.35}_{-9.75}$
Norm2 ^(a) (10⁻⁵)	$9 . 00_{- 1.56}^{+ 1.90}$ $9.00^{+1.90}_{-1.56}$	$12 . 15_{- 1.89}^{+ 2.28}$ $12.15^{+2.28}_{-1.89}$	$14 . 70_{- 2.14}^{+ 2.56}$ $14.70^{+2.56}_{-2.14}$
χ²/d.o.f.	421.31/325	464.95/342	485.68/358
P_F − T	87%	70%	53%

Notes.

^(a)

The subscripts 1 and 2 denote the HPL and SPL components, respectively.

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