Detection of low-luminosity X-ray pulsations from the accreting millisecond pulsar IGR J17511−3057: An ever-thinning thread between bright accretion and subluminous states

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Table 1.

Best-fit spectral parameters from the XMM-Newton observation for the model constant * TBabs * (thComp*bbodyrad).

Component	Parameter	Value
TBABS	N_H (10²² cm⁻²)	1.06^( * )
THCOMP	Γ	$2 . 20_{- 0.06}^{+ 0.07}$ $2.20^{+0.07}_{-0.06}$
	kT_e (keV)	20^( * )
	cov_frac	1^( * )
BBODYRAD	kT (keV)	0.33 ± 0.02
	Norm_bbodyrad	$6_{- 1}^{+ 2}$ $6^{+2}_{-1}$
CFLUX	F_{0.5 − 10} (10⁻¹² erg cm⁻² s⁻¹)	1.23 ± 0.04

	χ²/d.o.f.	134.51/148

Notes. Γ is the photon index, kT_e is the electron temperature, cov_frac is the covering fraction, and Norm_bbodyrad is the normalization for the bbodyard component. F_{0.5 − 10} is the unabsorbed 0.5–10 keV flux. ^( * ) Kept frozen during the fit.

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