All Tables

Table 1: XMM-Newton observation information. All observations are performed in Full Frame with the Thin Optical filter applied except in Rev. 175 where the Medium filter was used.
Table 2: The pn and MOS 1 data for all observations are fitted in the 0.18-1.2 keV band with an absorbed BB model including a Gaussian absorption line. The Gaussian width has been fixed to $\sigma =75$ eV.
Table 3: Joint fits to all EPIC pn FF mode observations in the 0.18-1.2 keV band with absorbed BB plus absorption Gaussian line model with a width of $\sigma =75$ eV. The absorption is forced to be the same in all observations. NC indicates that a parameter cannot be constrained (i.e. the corresponding model is not required by the data). The total $\chi ^{2}$ is 902 for 811 d.o.f.
Table 4: X-ray spectral analysis. Individual fits to the EPIC-pn and EPIC-MOS1 observations in the energy band 0.18-1.2 keV for a purely dipolar magnetic field structure ( $\beta _{\rm d}=1.0$ ), $\mu =1.34$ and $\mathcal{O}= 12^{\circ}$ . We allow to vary the magnetic field intensity at the pole ( $B_{\rm p}$ ) and the unredshifted temperature at the pole ( $kT_{\rm pole}$ ).
Table 5: Joint fits to EPIC-pn FF mode observations for a purely dipolar field ( $\beta _{\rm d}=1$ ) with $\mu =1.34$ and ${\cal O}=12^\circ$ , forcing the hydrogen column density, the normalization constant and the magnetic field intensity to be the same for all observations. The best fit yields $\chi ^{2}=1570$ for 819 d.o.f.
Table 6: Individual fits to the EPIC-pn EPIC-MOS1 observations in the energy band 0.18-1.2 keV for a quadrupole dominated magnetic field ( $\beta _{\rm d}=0.05$ ) with $\mu =3.87$ and $\mathcal{O}= 11^{\circ}$ . We allow to vary the magnetic field intensity and the temperature at the pole.
Table 7: Joint fits to EPIC-pn FF mode observations for a quadrupole dominated magnetic field ( $\beta _{\rm d}=0.05$ ) with $\mu =3.87$ and $\mathcal{O}= 11^{\circ}$ , forcing the hydrogen column density, the normalization constant and the magnetic field intensity to be the same for all observations. The best fit yields $\chi ^{2}=1192$ for 819 d.o.f.