First look at Vela X-1 with XRISM - A simultaneous campaign with XMM-Newton and NuSTAR

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Table C.1.

Parameter	GTI 1 (soft HR)	GTI 2 (hard HR)	Hard HR average spectrum
	NuSTAR + XMM-Newton + XRISM	NuSTAR + XRISM	XRISM
C_FPMA	fixed to 1	fixed to 1	–
C_FPMB	1.011 ± 0.003	1.010 ± 0.005	–
C_{EPIC − pn}	0.879 ± 0.003	–	–
C_Resolve	0.943 ± 0.005	$1 . 003_{- 0.007}^{+ 0.007}$ $1.003^{+0.007}_{-0.007}$	fixed to 1
N_H, ISM(10²²cm⁻²)	fixed to 0.371	fixed to 0.371	fixed to 0.371
N_H(10²²cm⁻²)	$7 . 46_{- 0.17}^{+ 0.18}$ $7.46^{+0.18}_{-0.17}$	$25 . 04_{- 0.96}^{+ 1.00}$ $25.04^{+1.00}_{-0.96}$	$31 . 15_{- 1.07}^{+ 1.10}$ $31.15^{+1.10}_{-1.07}$
CF	$0 . 912_{- 0.003}^{+ 0.004}$ $0.912^{+0.004}_{-0.003}$	0.882 ± 0.008	0.876 ± 0.007
Γ	0.91 ± 0.01	1.15 ± 0.02	0.90 ± 0.04
$K (ph {keV}^{- 1} {cm}^{- 2} s^{- 1})$ $K \ (\rm{ph \ keV^{-1} cm^{-2} s^{-1}})$	0.322 ± 0.011	0.245 ± 0.013	0.096 ± 0.007
E_cut (keV)	$19 . 87_{- 1.13}^{+ 1.07}$ $19.87^{+1.07}_{-1.13}$	$20 . 02_{- 1.39}^{+ 1.47}$ $20.02^{+1.47}_{-1.39}$	–
E_fold (keV)	$13 . 12_{- 0.42}^{+ 0.46}$ $13.12^{+0.46}_{-0.42}$	$13 . 14_{- 0.35}^{+ 0.38}$ $13.14^{+0.38}_{-0.35}$	–
E_10 keV(keV)	9.5 ± 0.2	10.3 ± 0.2	9.3 ± 0.2
d_10 keV(keV)	$4 . 63_{- 0.25}^{+ 0.26}$ $4.63^{+0.26}_{-0.25}$	$0 . 69_{- 0.13}^{+ 0.12}$ $0.69^{+0.12}_{-0.13}$	$0 . 87_{- 0.21}^{+ 0.20}$ $0.87^{+0.20}_{-0.21}$
σ_10 keV (keV)	$4 . 85_{- 0.24}^{+ 0.26}$ $4.85^{+0.26}_{-0.24}$	2.77 ± 0.29	$1 . 42_{- 0.21}^{+ 0.21}$ $1.42^{+0.21}_{-0.21}$
E_CRSF, F (keV)	$23 . 01_{- 0.32}^{+ 0.30}$ $23.01^{+0.30}_{-0.32}$	$24 . 34_{- 0.88}^{+ 0.82}$ $24.34^{+0.82}_{-0.88}$	–
σ_CRSF, F (keV)	0.5 × σ_CRSF, H	0.5 × σ_CRSF, H	–
d_CRSF, F (keV)	$8 . 92_{- 0.40}^{+ 0.41}$ $8.92^{+0.41}_{-0.40}$	$0 . 84_{- 0.28}^{+ 0.27}$ $0.84^{+0.27}_{-0.28}$	–
E_CRSF, H (keV)	$55 . 67_{- 0.63}^{+ 0.62}$ $55.67^{+0.62}_{-0.63}$	$53 . 14_{- 0.87}^{+ 0.97}$ $53.14^{+0.97}_{-0.87}$	–
σ_CRSF, H (keV)	$14 . 79_{- 0.40}^{+ 0.38}$ $14.79^{+0.38}_{-0.40}$	$8 . 41_{- 0.77}^{+ 0.79}$ $8.41^{+0.79}_{-0.77}$	–
d_CRSF, H(keV)	$68 . 3_{- 4.8}^{+ 5.0}$ $68.3^{+5.0}_{-4.8}$	$17 . 5_{- 2.1}^{+ 1.9}$ $17.5^{+1.9}_{-2.1}$	–
E_Ne(keV)	1.18 ± 0.01	–	–
$A_{Ne} (ph s^{- 1} {cm}^{- 2})$ $A_{{\mathrm{Ne}}} (\rm{ph \, s^{-1} \, cm^{-2}})$	$0 . 357_{- 0.018}^{+ 0.015}$ $0.357^{+0.015}_{-0.018}$	–	–
σ_Ne(keV)	$0 . 993_{- 0.007}^{+ 0.005}$ $0.993^{+0.005}_{-0.007}$	–	–
E_Mg(keV)	1.30 ± 0.01	–	–
A_Mg (ph s⁻¹ cm⁻²)	$0 . 506_{- 0.031}^{+ 0.033}$ $0.506^{+0.033}_{-0.031}$	–	–
σ_Mg(keV)	$0 . 424_{- 0.005}^{+ 0.004}$ $0.424^{+0.004}_{-0.005}$	–	–
E_Fe Kα₂(keV)	$6 . 3970_{- 0.0010}^{+ 0.0009}$ $6.3970^{+0.0009}_{-0.0010}$	$6 . 3959_{- 0.0016}^{+ 0.0015}$ $6.3959^{+0.0015}_{-0.0016}$	6.3905 ± 0.0008
A_Fe Kα₂(ph s⁻¹ cm⁻²)	$(1 . 54_{- 0.09}^{+ 0.01}) \times 10^{- 3}$ $(1.54^{+0.01}_{-0.09})\times10^{-3}$	$(1 . 14_{- 0.19}^{+ 0.20}) \times 10^{- 3}$ $(1.14^{+0.20}_{-0.19})\times 10^{-3}$	(0.71 ± 0.10)×10⁻³
σ_Fe Kα₂(keV)	$(9 . 51_{- 0.52}^{+ 0.40}) \times 10^{- 3}$ $(9.51^{+0.40}_{-0.52})\times10^{-3}$	$(8 . 39_{- 0.96}^{+ 0.89}) \times 10^{- 3}$ $(8.39^{+0.89}_{-0.96})\times 10^{-3}$	$(4 . 80_{- 0.76}^{+ 0.78}) \times 10^{- 3}$ $(4.80^{+0.78}_{-0.76})\times 10^{-3}$
E_Fe Kα₁(keV)	6.4048 ± 0.0007	6.4050 ± 0.0006	6.4041 ± 0.0004
A_Fe Kα₁(ph s⁻¹ cm⁻²)	$(0 . 36_{- 0.09}^{+ 0.10}) \times 10^{- 3}$ $(0.36^{+0.10}_{-0.09})\times10^{-3}$	(0.48 ± 0.15)×10⁻³	$(1 . 14_{- 0.10}^{+ 0.09}) \times 10^{- 3}$ $(1.14^{+0.09}_{-0.10})\times10^{-3}$
σ_Fe Kα₁(keV)	$(1 . 81_{- 0.55}^{+ 0.59}) \times 10^{- 3}$ $(1.81^{+0.59}_{-0.55})\times10^{-3}$	$(2 . 60_{- 0.71}^{+ 0.83}) \times 10^{- 3}$ $(2.60^{+0.83}_{-0.71})\times 10^{-3}$	$(4 . 12_{- 0.37}^{+ 0.38}) \times 10^{- 3}$ $(4.12^{+0.38}_{-0.37})\times 10^{-3}$
E_Fe Kβ(keV)	$7 . 0637_{- 0.0026}^{+ 0.0027}$ $7.0637^{+0.0027}_{-0.0026}$	$7 . 0634_{- 0.0011}^{+ 0.0010}$ $7.0634^{+0.0010}_{-0.0011}$	7.0630 ± 0.0014
A_Fe Kβ(ph s⁻¹ cm⁻²)	(0.21 ± 0.04)×10⁻³	(0.09 ± 0.03)×10⁻³	$(0 . 23_{- 0.03}^{+ 0.04}) \times 10^{- 3}$ $(0.23^{+0.04}_{-0.03})\times10^{-3}$
σ_Fe Kβ(keV)	$(7 . 10_{- 2.65}^{+ 2.51}) \times 10^{- 3}$ $(7.10^{+2.51}_{-2.65}) \times 10^{-3}$	$(0 . 84_{- 0.82}^{+ 1.54}) \times 10^{- 3}$ $(0.84^{+1.54}_{-0.82})\times 10^{-3}$	$(8 . 04_{- 1.48}^{+ 1.35}) \times 10^{- 3}$ $(8.04^{+1.35}_{-1.48})\times10^{-3}$
E_Ni Kα(keV)	7.4513 ± 0.0001	$7 . 4475_{- 0.0035}^{+ 0.0034}$ $7.4475^{+0.0034}_{-0.0035}$	7.4771 ± 0.0019
A_Ni Kα(ph s⁻¹ cm⁻²)	≤0.04 × 10⁻³	≤3 × 10⁻⁶	$(0 . 06_{- 0.02}^{+ 0.03}) \times 10^{- 3}$ $(0.06^{+0.03}_{-0.02})\times10^{-3}$
σ_Ni Kα (keV)	≤0.26 × 10⁻³	≤0.63 × 10⁻³	$(3 . 63_{- 2.65}^{+ 2.85}) \times 10^{- 3}$ $(3.63^{+2.85}_{-2.65})\times10^{-3}$
C-stat^(a)	1.37	1.21	1.17

^(a) The parameters derived from our variational inference analysis with jaxspec were loaded in ISIS to compute the equivalent C-stat to allow for frequentist goodness of fit assessment.

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