Suzaku analysis of the supernova remnant G306.3-0.9 and the gamma-ray view of its neighbourhood

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2017-04-01

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Sezer, A.
Ergin, Tülün
Yamazaki, R.

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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, Ar, Ca and Fe confirm that the X-ray emission has an ejecta origin. The centroid energy of the Fe K line supports that G306.3-0.9 is a remnant of a Type Ia supernova (SN) rather than a core-collapse SN. The GeV gamma-ray emission from G306.3-0.9 and its surrounding were analysed using about 6-yr of Fermi data. We report about the non-detection of G306.3-0.9 and the detection of a new extended gamma-ray source in the south-west of G306.3-0.9 with significance of similar to 13 sigma. We discuss several scenarios for these results with the help of data from other wavebands to understand the SNR and its neighbourhood.

Subject Keywords

Individual objects, (G306.3−0.9), Supernova remnants, Xrays, Gamma-rays

URI

https://hdl.handle.net/11511/35501

Journal

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

DOI

https://doi.org/10.1093/mnras/stw3331

Collections

Department of Physics, Article

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Citation Formats

A. Sezer, T. Ergin, and R. Yamazaki, “Suzaku analysis of the supernova remnant G306.3-0.9 and the gamma-ray view of its neighbourhood,” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, pp. 3434–3441, 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/35501.