Publication Date:
2015-08-06
Description:
We analyse the Suzaku X-ray Imaging Spectrometer data of the central region of supernova remnant G332.5-5.6. The X-ray data are well described by a single non-equilibrium ionization thermal model, vnei , with an absorbing hydrogen column density of 1.4 $^{+0.4}_{-0.1}$ x 10 21 cm –2 . The plasma is characterized by an electron temperature of 0.49 $^{+0.08}_{-0.06}$ keV with subsolar abundances for O (0.58 $^{+0.06}_{-0.05}$ solar value) and Fe (0.72 $^{+0.06}_{-0.05}$ solar value) and slightly overabundance for Mg (1.23 $^{+0.14}_{-0.14}$ solar value). It seems that the central X-ray emission originates from a projection effect or evaporation of residual clouds inside G332.5-5.6. We estimate a distance of 3.0 ± 0.8 kpc for G332.5-5.6 based on the extinction–distance relation. G332.5-5.6 has an age of 7–9 kyr.
Print ISSN:
0035-8711
Electronic ISSN:
1365-2966
Topics:
Physics
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