Giant outburst from the supergiant fast X-ray transient IGR J17544−2619: accretion from a transient disc?

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Volume 576 (April 2015)

A&A, 576 (2015) L4

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Table 2

Spectral fits of simultaneous XRT/WT and BAT data.

Spectrum^a	Time	N_H	Γ	E_fold	E_cut	Flux^b	Luminosity^c	/d.o.f.
	(s since T₀)	(× 10²² cm^-2)		(keV)	(keV)	(× 10^-8 erg cm^-2 s^-1)	(× 10³⁷ erg s^-1)
						(0.3–10 keV)	(0.01–1000 keV)

Orb 1	136.2–306.8						10.0	1.01/364
A	136.2–166.2						8.8	0.92/83
B	166.2–186.2						15.3	0.84/99
Peak^d	169.6–172.8	–	–	–	–	10.0	32.0	–
C	186.2–206.2						13.2	1.10/89
D	206.2–226.2						10.7	1.06/77
E	226.2–246.2						10.6	0.98/72
F	246.2–266.2						7.3	0.98/56
G	266.2–286.2						8.0	0.89/58
H	286.2–306.8						8.0	0.99/62

Notes.

^(a)

Defined in Sect. 3.1, see Fig. 1c;

^(b)

average unabsorbed 0.3–10 keV fluxes in units of 10^-8 erg cm^-2 s^-1;

^(c)

bolometric luminosity in units of 10³⁷ erg s^-1;

^(d)

the peak luminosity, calculated by converting peak count rate of 668 counts s^-1 by using the spectral parameters of spectrum B.

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