eROSITA detection of a cloud obscuration event in the Seyfert AGN EC 04570–5206

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Volume 684 (April 2024)

A&A, 684 (2024) A101

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Table 8.

Best-fitting partial-covering obscuration models to XM1, XM2, and XM4.

XM1 (2020 Dec. 26)
M2 (PC*(SXCOM+HXPL)+UXCL):	Obscurer	Soft comptonization	Hard comptonization

χ²/d.o.f. = 625.28/644 = 0.971	cm⁻²	T_seed = 20 eV*
F_{0.5 − 2} = (1.13 ± 0.03)×10⁻¹³ erg cm⁻² s⁻¹	CF =	T_e = 0.1 keV*	F_1 − 10^(a) = (3.77 ± 0.16)×10⁻¹³ erg cm⁻² s⁻¹
F_{0.2 − 5} = (3.79 ± 0.10)×10⁻¹³ erg cm⁻² s⁻¹
erg cm⁻² s⁻¹		N_SC^(b) = 3.97
M2-alt (PC*(SXCOM+HXCOM)+UXCL):			T_seed = 20 eV, T_e = 100 keV
χ²/d.o.f. = 626.61/644 = 0.973			, N_HC^(b) = 1.12

XM2 (2021 Jan. 28)

M2 (PC*(SXCOM+HXPL)+UXCL):	Obscurer	Soft comptonization	Hard comptonization

χ²/d.o.f. = 302.13/292 = 1.035	cm⁻²	T_seed = 20 eV*
F_{0.5 − 2} = (1.10 ± 0.04)×10⁻¹³ erg cm⁻² s⁻¹	CF =	T_e = 0.1 keV*	F_1 − 10^(a) = (2.93 ± 0.22)×10⁻¹³ erg cm⁻² s⁻¹
F_{0.2 − 5} = (3.46 ± 0.12)×10⁻¹³ erg cm⁻² s⁻¹
erg cm⁻² s⁻¹		N_SC^(b) =
M2-alt (PC*(SXCOM+HXCOM)+UXCL):			T_seed = 20 eV, T_e = 100 keV
χ²/d.o.f. = 302.96/292 = 1.038			, N_HC^(b) =

XM4 (2022 Apr. 25)

M2 (PC*(SXCOM+HXPL)+UXCL):	Obscurer	Soft comptonization	Hard comptonization

χ²/d.o.f. = 177.07/175 = 1.012	cm⁻²	T_seed = 20 eV*
F_{0.5 − 2} = (2.5 ± 0.2)×10⁻¹⁴ erg cm⁻² s⁻¹	CF =	T_e = 0.1 keV*	F_1 − 10^(a) = 1.54 erg cm⁻² s⁻¹
F_{0.2 − 5} = (8.0 ± 0.5)×10⁻¹⁴ erg cm⁻² s⁻¹
erg cm⁻² s⁻¹		N_SC^(b) =
M2-alt (PC*(SXCOM+HXCOM)+UXCL):			T_seed = 20 eV, T_e = 100 keV
χ²/d.o.f. = 176.50/175 = 1.009			, N_HC^(b) =

Notes. An asterisk (*) denotes a fixed parameter.

^(a)

Unobscured 1−10 keV observed-frame flux of the hard power-law component.

^(b)

N_HC and N_SC denote, respectively, the normalizations of the hard and soft X-ray COMPTT components.

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