SIMBAD references

2009ApJ...693L.122E - Astrophys. J., 693, L122-L126 (2009/March-2)

Suzaku observation of the new soft gamma repeater SGR 0501+4516 in outburst.

ENOTO T., NAKAGAWA Y.E., REA N., ESPOSITO P., GOTZ D., HURLEY K., ISRAEL G.L., KOKUBUN M., MAKISHIMA K., MEREGHETTI S., MURAKAMI H., NAKAZAWA K., SAKAMOTO T., STELLA L., TIENGO A., TUROLLA R., YAMADA S., YAMAOKA K., YOSHIDA A. and ZANE S.

Abstract (from CDS):

We present the first Suzaku observation of the new Soft Gamma Repeater, SGR 0501+4516, performed on 2008 August 26, four days after the onset of bursting activity of this new member of the magnetar family. The soft X-ray persistent emission was detected with the X-ray Imaging Spectrometer (XIS) at a 0.5-10 keV flux of 3.8x10–11 erg/s/cm2, with a spectrum well fitted by an absorbed blackbody plus power-law model. The source pulsation was confirmed at a period of 5.762072±0.000002 s, and 32 X-ray bursts were detected by the XIS, four of which were also detected at higher energies by the Hard X-ray Detector (HXD). The strongest burst, which occurred at 03:16:16.9 (UTC), was so bright that it caused instrumental saturation, but its precursor phase, lasting for about 200 ms, was detected successfully over the 0.5-200 keV range, with a fluence of ∼2.1x10–7 erg/cm2 and a peak intensity of about 89 crab. The entire burst fluence is estimated to be ∼50 times higher. The precursor spectrum was very hard, and well modeled by a combination of two blackbodies. We discuss the bursting activity and X/γ-ray properties of this newly discovered Soft Gamma Repeater in comparison with other members of the class.

Abstract Copyright:

Journal keyword(s): pulsars: individual: SGR 0501+4516 - stars: magnetic fields - X-rays: stars

Simbad objects: 5

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