The fastest-rotating magnetar 1E 1547.0 - 5408 was observed in broad-band X-rays with Suzaku for 33 ks on 2009 January 28–29 , 7 days after the onset of its latest bursting activity .
After removing burst events , the absorption-uncorrected 2–10 keV flux of the persistent emission was measured with the XIS as 5.7 \times 10 ^ { -11 } ergs cm ^ { -2 } s ^ { -1 } , which is 1–2 orders of magnitude higher than was measured in 2006 and 2007 when the source was less active .
The persistent emission was also detected significantly with the HXD in > 10 keV up to at least \sim 110 keV , with an even higher flux of 1.3 \times 10 ^ { -10 } ergs cm ^ { -2 } s ^ { -1 } in 20–100 keV .
The pulsation was detected at least up to 70 keV at a period of 2.072135 \pm 0.00005 s , with a deeper modulation than was measured in a fainter state .
The phase-averaged 0.7–114 keV spectrum was reproduced by an absorbed blackbody emission with a temperature of 0.65 \pm 0.02 keV , plus a hard power-law with a photon index of \sim 1.5 .
At a distance of 9 kpc , the bolometric luminosity of the blackbody and the 2–100 keV luminosity of the hard power-law are estimated as ( 6.2 \pm 1.2 ) \times 10 ^ { 35 } ergs s ^ { -1 } and 1.9 \times 10 ^ { 36 } ergs s ^ { -1 } , respectively , while the blackbody radius becomes \sim 5 km .
Although the source had not been detected significantly in hard X-rays during the past fainter states , a comparison of the present and past spectra in energies below 10 keV suggests that the hard component is more enhanced than the soft X-ray component during the persistent activity .