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Table 3.

Results for the phase-averaged and phase-resolved spectra of PSR J0726–2612.

Model NH (a) kT1 R1 (b) kT2 R2 (b) E σ Strength (c) /d.o.f. nhp
1020 cm−2 keV km keV km keV keV keV erg s−1 cm−2
Phase-averaged spectra:
BB 4.1 ± 0.2 0.0896(6) 4.90 ± 0.15 ... ... ... ... ... 1.37/213 3 × 10−4
2BB 4.3 ± 0.2 0.0888(7) 5.1 ± 0.2 >0.33 <0.018 ... ... ... 1.32/211 1 × 10−3
GBB 2.8 ± 0.3 0.11 ± 0.01 ... ... 1.09 ± 0.09 0.28 ± 0.08 1.12/210 0.11
G2BB 1.00/208 0.47
GNSA (e) 0.029(1) 14.3 (d) ... ... 9.0 ± 1.1 1.03/210 0.36
GNSMAXG (f) 0.028(1) 14.3 (d) ... ... 0.28 ± 0.09 1.02/210 0.40
G2BB phase-resolved:
Maxima 1 5.3 (d) 0.074 (d) 10.4 (d) 0.110(7) 0.39 ± 0.01 0.07 ± 0.01 3.6 ± 0.2 1.00/80 0.47
Maxima 2 5.3 (d) 0.074 (d) 10.4 (d) 0.111(9) 0.39 ± 0.01 0.06 ± 0.01 0.10 ± 0.01 3.6 ± 0.2 0.95/78 0.61
Minima 1 5.3 (d) 0.074 (d) 10.4 (d) 1.14/49 0.23
Minima 2 5.3 (d) 0.074 (d) 10.4 (d) 1.28/52 0.08

Notes. Joint fits of EPIC-pn+MOS1+MOS2 phase-averaged spectra and EPIC-pn phase-resolved spectra of PSR J0726–2612. The fluxes, corrected for the absorption, are expressed in units of 10−12 erg cm−2 s−1. Temperatures and radii are observed quantities at infinity. Errors at 1σ.

(a)

Derived with the photoelectric absorption model TBABS (Wilms et al. 2000).

(b)

Radius for an assumed distance of 1 kpc.

(c)

Parameter of GABS model such as the optical depth at line center is .

(d)

Fixed value.

(e)

NSA model (Pavlov et al. 1995) with M = 1.2 M⊙, R = 12 km, B = 1013 G and a uniform temperature distribution. This model yields a best-fit distance pc.

(f)

NSMAXG model (Ho et al. 2008, 2014) with M = 1.2 M⊙, R = 12 km, a dipole distribution of the magnetic field (B = 1013 G at the poles) and consistent temperature distribution, seen with η = 90°. This model yields a best-fit distance of pc.

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