X-ray transients in the Chandra archive - Introducing the cumulative distribution discriminator (CuDiDi)

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Table 4

Results of spectral fits for candidates with zero-duration T₉₀.

Source ID	Blackbody model			Power law model
	T	F_{0.5–7 keV}	C-stat/d.o.f	Γ	F_{0.5–7 keV}	C-stat/d.o.f
	(keV)	(erg s⁻¹ cm⁻²)			(erg s⁻¹ cm⁻²)
XT 040916	${0.40}_{- 0.16}^{+ 0.38}$ $Mathematical equation: $\[0.40_{-0.16}^{+0.38}\]$$	${2.5}_{- 1.3}^{+ 2.5}$ $Mathematical equation: $\[2.5_{-1.3}^{+2.5}\]$$ × 10⁻¹⁵	1.84/7	${2.5}_{- 1.6}^{+ 1.9}$ $Mathematical equation: $\[2.5_{-1.6}^{+1.9}\]$$	${3.7}_{- 1.9}^{+ 4.3}$ $Mathematical equation: $\[3.7_{-1.9}^{+4.3}\]$$ × 10⁻¹⁵	0.69/7
XT 111205	${0.17}_{- 0.07}^{+ 0.27}$ $Mathematical equation: $\[0.17_{-0.07}^{+0.27}\]$$	${1.9}_{- 1.2}^{+ 3.0}$ $Mathematical equation: $\[1.9_{-1.2}^{+3.0}\]$$ × 10⁻¹⁵	1.39/4	${4.7}_{- 3.6}^{+ 3.9}$ $Mathematical equation: $\[4.7_{-3.6}^{+3.9}\]$$	${3.2}_{- 2.1}^{+ 13.9}$ $Mathematical equation: $\[3.2_{-2.1}^{+13.9}\]$$ × 10⁻¹⁵	0.87/4
	${0.12}_{- 0.04}^{+ 0.11}$ $Mathematical equation: $\[0.12_{-0.04}^{+0.11}\]$$	${1.0}_{- 0.8}^{+ 1.4}$ $Mathematical equation: $\[1.0_{-0.8}^{+1.4}\]$$ × 10⁻¹⁴	2.07/4	${7.0}_{- 3.8}^{+ 3.0}$ $Mathematical equation: $\[7.0_{-3.8}^{+3.0}\]$$	${2.9}_{- 2.5}^{+ 14.4}$ $Mathematical equation: $\[2.9_{-2.5}^{+14.4}\]$$ × 10⁻¹⁴	1.25/4
XT 150429	${0.19}_{- 0.07}^{+ 0.24}$ $Mathematical equation: $\[0.19_{-0.07}^{+0.24}\]$$	${4.7}_{- 2.9}^{+ 7.4}$ $Mathematical equation: $\[4.7_{-2.9}^{+7.4}\]$$ × 10⁻¹⁵	3.06/3	${4.0}_{- 2.9}^{+ 2.8}$ $Mathematical equation: $\[4.0_{-2.9}^{+2.8}\]$$	${6.9}_{- 4.2}^{+ 9.8}$ $Mathematical equation: $\[6.9_{-4.2}^{+9.8}\]$$ × 10⁻¹⁵	2.8/3
XT 160625	${0.062}_{- 0.015}^{+ 0.021}$ $Mathematical equation: $\[0.062_{-0.015}^{+0.021}\]$$	${7.3}_{- 3.5}^{+ 5.5}$ $Mathematical equation: $\[7.3_{-3.5}^{+5.5}\]$$ × 10⁻¹³	9.84/8	−	−	−

Notes. The photon index (Γ) of the power-law model could not be constrained for XT 160625. The second row for XT 111205 includes Galactic absorption fixed at N_H = 4.43 × 10²¹ cm⁻², and the corresponding fluxes are unabsorbed. All other results are for models without Galactic absorption. The N_H of the other sources are in the range 0.76–1.75×10²⁰ and have a negligible effect on the fits.

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