Significant reflection and absorption effects in the X-ray emission of the intermediate polar IGR J17195-4100

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Table 2.

Best-fit spectral parameters of the source IGR J17195-4100 with errors at 90% confidence level.

Parameter	Unit	M1	M2	M3	M4	M5	M6
$N_{H}^{phabs}$ $N_{\mathrm{H}}^{\mathrm{phabs}}$	10²² cm⁻²	0.11 $_{- 0.008}^{+ 0.004}$ $^{+0.004}_{-0.008}$	0.12 $_{- 0.005}^{+ 0.01}$ $^{+0.01}_{-0.005}$	0.11 $_{- 0.005}^{+ 0.005}$ $^{+0.005}_{-0.005}$	0.12 $_{- 0.003}^{+ 0.007}$ $^{+0.007}_{-0.003}$	0.13 $_{- 0.005}^{+ 0.006}$ $^{+0.006}_{-0.005}$	0.12 $_{- 0.007}^{+ 0.01}$ $^{+0.01}_{-0.007}$
$N_{H}^{pcf}$ $N_{\mathrm{H}}^{pcf}$	10²² cm⁻²	3.26 $_{- 0.48}^{+ 0.23}$ $^{+0.23}_{-0.48}$	14.51 $_{- 2.03}^{+ 6.68}$ $^{+6.68}_{-2.03}$	4.79 $_{- 0.52}^{+ 0.53}$ $^{+0.53}_{-0.52}$	11.82 $_{- 1.8}^{+ 3.9}$ $^{+3.9}_{-1.8}$	N/A	N/A
cvf^pcf		0.55 $_{- 0.01}^{+ 0.01}$ $^{+0.01}_{-0.01}$	0.42 $_{- 0.12}^{+ 0.02}$ $^{+0.02}_{-0.12}$	0.53 $_{- 0.01}^{+ 0.01}$ $^{+0.01}_{-0.01}$	0.38 $_{- 0.15}^{+ 0.02}$ $^{+0.02}_{-0.15}$	N/A	N/A
$N_{H}^{zxipcf}$ $N_{\mathrm{H}}^{zxipcf}$	10²² cm⁻²	N/A	3.33 $_{- 0.7}^{+ 1.9}$ $^{+1.9}_{-0.7}$	N/A	3.09 $_{- 0.68}^{+ 2.26}$ $^{+2.26}_{-0.68}$	3.0 $_{- 0.82}^{+ 0.1}$ $^{+0.1}_{-0.82}$	2.95 $_{- 1.19}^{+ 1.82}$ $^{+1.82}_{-1.19}$
						7.36 $_{- 0.93}^{+ 1.53}$ $^{+1.53}_{-0.93}$	7.39 $_{- 1.09}^{+ 1.64}$ $^{+1.64}_{-1.09}$
cvf^zxipcf		N/A	0.54 $_{- 0.07}^{+ 0.04}$ $^{+0.04}_{-0.07}$	N/A	0.44 $_{- 0.04}^{+ 0.09}$ $^{+0.09}_{-0.04}$	0.49 $_{- 0.04}^{+ 0.06}$ $^{+0.06}_{-0.04}$	0.39 $_{- 0.03}^{+ 0.08}$ $^{+0.08}_{-0.03}$
						0.46 $_{- 0.12}^{+ 0.04}$ $^{+0.04}_{-0.12}$	0.43 $_{- 0.06}^{+ 0.12}$ $^{+0.12}_{-0.06}$
log ξ⁽¹⁾		N/A	1.47 $_{- 0.17}^{+ 0.22}$ $^{+0.22}_{-0.17}$	N/A	1.46 $_{- 0.23}^{+ 0.44}$ $^{+0.44}_{-0.23}$	1.63 $_{- 0.22}^{+ 0.34}$ $^{+0.34}_{-0.22}$	1.69 $_{- 0.31}^{+ 0.4}$ $^{+0.4}_{-0.31}$
						-0.18 $_{- 0.25}^{+ 0.3}$ $^{+0.3}_{-0.25}$	0.17 $_{- 0.32}^{+ 0.92}$ $^{+0.92}_{-0.32}$
Ω⁽²⁾		13.04 $_{- 2.27}^{+ 5.7}$ $^{+5.7}_{-2.27}$	0.49 $_{- 0.21}^{+ 1.48}$ $^{+1.48}_{-0.21}$	2.11 $_{- 0.59}^{+ 1.16}$ $^{+1.16}_{-0.59}$	0.58 $_{- 0.26}^{+ 0.38}$ $^{+0.38}_{-0.26}$	0.69 $_{- 0.17}^{+ 0.29}$ $^{+0.29}_{-0.17}$	0.54 $_{- 0.19}^{+ 0.2}$ $^{+0.2}_{-0.19}$
cos i		≤0.05	≥0.16	0.19 $_{- 0.08}^{+ 0.08}$ $^{+0.08}_{-0.08}$	≥0.36	≥0.64	≥0.51
T_max⁽³⁾	keV	25.91 $_{- 3.67}^{+ 2.26}$ $^{+2.26}_{-3.67}$	30.4 $_{- 2.92}^{+ 4.37}$ $^{+4.37}_{-2.92}$	27.82 $_{- 2.06}^{+ 1.97}$ $^{+1.97}_{-2.06}$	27.14 $_{- 2.13}^{+ 2.0}$ $^{+2.0}_{-2.13}$	28.19 $_{- 1.23}^{+ 1.78}$ $^{+1.78}_{-1.23}$	26.57 $_{- 1.21}^{+ 1.59}$ $^{+1.59}_{-1.21}$
Z⁽⁴⁾	Z_⊙	0.21 $_{- 0.4}^{+ 0.4}$ $^{+0.4}_{-0.4}$	0.27 $_{- 0.04}^{+ 0.05}$ $^{+0.05}_{-0.04}$	0.3 $_{- 0.05}^{+ 0.05}$ $^{+0.05}_{-0.05}$	0.36 $_{- 0.04}^{+ 0.06}$ $^{+0.06}_{-0.04}$	0.25 $_{- 0.02}^{+ 0.02}$ $^{+0.02}_{-0.02}$	0.36 $_{- 0.04}^{+ 0.05}$ $^{+0.05}_{-0.04}$
Norm_mkc, cev⁽⁵⁾		2.7 $_{- 0.1}^{+ 0.2}$ $^{+0.2}_{-0.1}$	3.4 $_{- 0.5}^{+ 0.2}$ $^{+0.2}_{-0.5}$	6.1 $_{- 0.01}^{+ 0.01}$ $^{+0.01}_{-0.01}$	6.8 $_{- 0.2}^{+ 0.2}$ $^{+0.2}_{-0.2}$	3.4 $_{- 0.2}^{+ 0.1}$ $^{+0.1}_{-0.2}$	6.8 $_{- 0.2}^{+ 0.02}$ $^{+0.02}_{-0.2}$
E_l, FeKα	keV	6.4 $_{- 0.03}^{+ 0.01}$ $^{+0.01}_{-0.03}$	6.4 $_{- 0.02}^{+ 0.01}$ $^{+0.01}_{-0.02}$	6.4 $_{- 0.01}^{+ 0.01}$ $^{+0.01}_{-0.01}$	6.4 $_{- 0.02}^{+ 0.007}$ $^{+0.007}_{-0.02}$	6.4 $_{- 0.02}^{+ 0.006}$ $^{+0.006}_{-0.02}$	6.4 $_{- 0.01}^{+ 0.005}$ $^{+0.005}_{-0.01}$
Norm_FeKα⁽⁶⁾	phot. cm⁻² s⁻¹	6.2 $_{- 0.06}^{+ 0.06}$ $^{+0.06}_{-0.06}$	6.8 $_{- 0.6}^{+ 0.6}$ $^{+0.6}_{-0.6}$	6.6 $_{- 0.5}^{+ 0.5}$ $^{+0.5}_{-0.5}$	6.5 $_{- 0.8}^{+ 0.6}$ $^{+0.6}_{-0.8}$	6.4 $_{- 0.7}^{+ 0.7}$ $^{+0.7}_{-0.7}$	6.6 $_{- 0.7}^{+ 0.6}$ $^{+0.6}_{-0.7}$
E_l, OVII	keV	0.57 $_{- 0.006}^{+ 0.006}$ $^{+0.006}_{-0.006}$	0.57 $_{- 0.01}^{+ 0.01}$ $^{+0.01}_{-0.01}$	0.56 $_{- 0.006}^{+ 0.007}$ $^{+0.007}_{-0.006}$	0.56 $_{- 0.008}^{+ 0.007}$ $^{+0.007}_{-0.008}$	0.57 $_{- 0.008}^{+ 0.007}$ $^{+0.007}_{-0.008}$	0.56 $_{- 0.008}^{+ 0.008}$ $^{+0.008}_{-0.008}$
Norm_OVII⁽⁶⁾	phot. cm⁻² s⁻¹	0.9 $_{- 0.1}^{+ 0.1}$ $^{+0.1}_{-0.1}$	1.0 $_{- 0.3}^{+ 0.2}$ $^{+0.2}_{-0.3}$	0.9 $_{- 0.2}^{+ 0.1}$ $^{+0.1}_{-0.2}$	0.7 $_{- 0.2}^{+ 0.2}$ $^{+0.2}_{-0.2}$	1.0 $_{- 0.1}^{+ 0.1}$ $^{+0.1}_{-0.1}$	0.7 $_{- 0.1}^{+ 0.2}$ $^{+0.2}_{-0.1}$
χ_ν²/d.o.f.		1.28/1081	1.11/1078	1.19/1081	1.08/1078	1.09/1077	1.08/1077

Notes.

⁽¹⁾

log ξ: The ionisation parameter.

⁽²⁾

Ω: The amplitude of the reflection.

⁽³⁾

alpha for CEVMKL is set at 1.0, assuming the standard cooling flow model.

⁽⁴⁾

Z: The plasma abundance of the MKCFLOW model and the Fe abundance of the CEVMKL model. The angr table of abundances is used (Anders & Grevesse 1989).

⁽⁵⁾

The norm of the MKCFLOW and CEVMKL models is in the units of 1 × 10⁻⁸ M_⊙/yr and 1 × 10⁻² N_cevmkl, respectively.

⁽⁶⁾

The norm of GAUSS model for Fe Kα and O VII lines are in units of 1 × 10⁻⁵ and 1 × 10⁻³ photons/cm²/s, respectively; photon flux in the line. The sigma (σ) of GAUSS models are fixed at 1.0 × 10⁻³ assuming narrow lines limited with the spectral resolution. Iron abundance and abundance parameter of the reflect model is kept at 1.0 Solar abundance. The X-ray Flux in the 3.5–10 keV energy range is 2.6 × 10⁻¹¹ erg s⁻¹ cm⁻² for the XMM-Newton EPIC pn, and 2.9 × 10⁻¹¹ erg s⁻¹ cm⁻² and 2.8 × 10⁻¹¹ erg s⁻¹ cm⁻² for FPMA and FPMB data of NuSTAR, respectively. The cross-normalisation constant is fixed to 1.0 for the FPMA, yielding 0.98 and (0.91–0.94) for FPMB and pn data, respectively.

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