Direct probe of the inner accretion flow around the supermassive black hole in NGC 2617

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Table 2

Fit statistics for the continuum.

Model A			Model B			Model C
xillver + tbnew_pcf*(blackbody + power law)			xillver + tbnew_pcf1tbnew_pcf2powerlaw			xillver + tbnew_pcf*optxagnf

	OBS1	OBS2		OBS1	OBS2		OBS1	OBS2

^a Γ	1.87 ± 0.01	1.97 ± 0.01	^a Γ	2.028 ± 0.007	2.146 ± 0.008	^a Γ	1.76 ± 0.02	1.83 ± 0.02
^b f_pow	3.8 ± 0.1	8.2	^b f_pow	3.9 ± 0.2	8.4 ± 0.5	^j L/L_Edd	0.026	0.067

^c kT_bb	111 ± 2		^e N_H,1	3.3 ± 0.03		^k r_cor	>37	25
^d f_bb	1.3 ± 0.2	6.0 ± 0.3	^g C_f,1	0.24 ± 0.01		^l kT_e	270
						^m τ	14
						ⁿ f_pl

^e N_H	22 ± 4		^e N_H,2	47		^e N_H	62
^g C_f	0.23 ± 0.02		^g C_f,2	0.40 ± 0.03		^g C_f,2	0.19

^h log ξ_R	<0.17		^h log ξ_R	<0.5		^h log ξ_R	<1.2
ⁱ f_ref	0.9 ± 0.3	2.3	ⁱ f_ref	0.8 ± 0.3	2.1 ± 0.8	ⁱ f_ref	1.1	2.0

χ²/ν	1445/1331		χ²/ν	1439/1332		χ²/ν	1415/1329
P_null	0.015		P_null	0.021		P_null	0.050

Notes. Every model includes a Galactic equivalent hydrogen column density cm^-2 (Kalberla et al. 2005) modelled with tbabs, Wilms et al. (in prep.).

^(a)

Power law photon index;

^(b)

observed 0.3–10 keV power law flux in units of 10^-11 erg cm^-2 s^-1;

^(c)

blackbody peak temperature, in eV;

^(d)

observed 0.3–10 keV blackbody flux in units of 10^-12 erg cm^-2 s^-1;

^(e)

absorber column density in units of 10²² cm^-2;

^(f)

logarithm of the absorber ionisation parameter in units of erg cm s^-1;

^(g)

absorber covering factor;

^(h)

logarithm of the reflector ionisation parameter in units of erg cm s^-1;

⁽ⁱ⁾

observed 0.3–10 keV reflected flux in units of 10^-12 erg cm^-2 s^-1;

^(j)

eddington ratio;

^(k)

coronal radius in units of gravitational radii;

^(l)

electron temperature of the warm corona, in units of eV;

^(m)

warm corona optical depth;

⁽ⁿ⁾

fraction of energy that inside r_cor is dissipated in the hot, optically thin corona.

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