Suzaku study of the centrally brightened supernova remnant G272.2-3.2

Sezer, A.
In this paper, we present the results from a Suzaku observation of the Galactic supernova remnant G272.2-3.2. The spectra of G272.2-3.2 are well fitted by a single-temperature variable abundance non-equilibrium ionization (VNEI) model with an electron temperature kTe similar to 0.77 keV, an ionization time-scale t similar to 6.5 x 1010 cm-3 s and an absorbing column density NH similar to 1.1 x 1022 cm-2. We have detected enhanced abundances of Si, S, Ca, Fe and Ni in the centre region, indicating that the X-ray emission has an ejecta origin. We estimate that the electron density is ne similar to 0.48f-1/2 cm-3, the age is similar to 4300f1/2 yr and the X-ray total mass is Mx= 475f1/2 M circle dot by taking the distance to be d= 10 kpc. To understand the origin of the centrally peaked X-ray emission of the remnant, we have studied the radial variations of the electron temperature and surface brightness. The relative abundances in the centre region suggest that G272.2-3.2 is the result of a Type Ia supernova explosion.


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Sezer, A.; Ergin, Tülün; Yamazaki, R. (2017-04-01)
We present an investigation of the supernova remnant (SNR) G306.3-0.9, using archival multiwavelength data. The Suzaku spectra are well described by two-component thermal plasma models: the soft component is in ionization equilibrium and has a temperature similar to 0.59 keV, while the hard component has temperature similar to 3.2 keV and ionization time-scale similar to 2.6 x 10(10) cm(-3) s. We clearly detected Fe K-shell line at energy of similar to 6.5 keV from this remnant. The overabundances of Si, S,...
Suzaku Analysis of Galactic Supernova Remnants G27.4+0.0 and G12.0-0.1
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We present Suzaku results of galactic supernova remnants (SNRs) G27.4 +0.0 and G12.0-0.1. From the spectra some important parameters like galactic hydrogen column density (N-H), electron temperature (kT(e)), ionization timescale (n(e)t) are calculated. Furthermore, the abundances of Mg, Si, S are derived from the spectra of G27.4+0.0 indicating that G27.4+0.0 has originated from a core-collapse supernova explosion.
Discovery of recombining plasma inside the extended gamma-ray supernova remnant HB9
Sezer, A.; Ergin, Tülün; Yamazaki, R.; Sano, H.; Fukui, Y. (2019-11-01)
We present the results from the Suzaku X-ray Imaging Spectrometer observation of the mixed-morphology supernova remnant (SNR) HB9 (G160.9+2.6). We discovered recombining plasma (RP) in the western Suzaku observation region and the spectra here are well described by a model having collisional ionization equilibrium (CIE) and RP components. On the other hand, the X-ray spectra from the eastern Suzaku observation region are best reproduced by the CIE and non-equilibrium ionization model. We discuss possible sc...
Ergin, Tülün; Sezer, A.; Saha, L.; Majumdar, P.; Chatterjee, A.; Bayirli, A.; Ercan, E. N. (2014-07-20)
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Sezer, A.; GÖK, FATMA; Aktekin, E. (2012-12-01)
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Citation Formats
A. Sezer and F. GÖK, “Suzaku study of the centrally brightened supernova remnant G272.2-3.2,” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, pp. 3538–3542, 2012, Accessed: 00, 2020. [Online]. Available: