X-ray Investigation of Supernova Remnant G12.8-0.0 with Suzaku

Abstract

The Galactic supernova remnant (SNR) G12.8-0.0 is a member of the class of composite SNRs and hosts the pulsar PSR J1813–1749. In this work, we investigate the X-ray nature of the emission and spectral parameters of the SNR using the high spectral resolution data from Suzaku. We found that the X-ray spectrum of G12.8-0.0 can be fitted by a non-thermal model with a high absorbing column density of NH ∼12.1x1022 cm-2 and a photon index of Γ ∼ 1.97. We also present spectral simulations of G12.8-0.0 for the future missions, XRISM and Athena. The thermal emission lines of Mg and Si are clearly resolved in both simulated spectra, indicating the presence of ejecta.

Keywords

• X-rays
• Supernova remnants
• G12.8-0.0
• Thermal and non-thermal emission.

Süpernova Kalıntısı G12.8-0.0’nin Suzaku ile X-ışın Dalgaboylarında Araştırılması

Öz

Galaksimizde bulunan G12.8-0.0, merkezinde pulsar PSR J1813–1749’u barındıran bir kompozit süpernova kalıntısıdır (SNK). Bu çalışmada, yüksek tayfsal çözünürlüklü Suzaku verisi kullanılarak, SNK’dan gelen ışımanın X-ışın doğası ve tayfsal özellikleri araştırılmıştır. X-ışın tayfı ısısal olmayan bir model ile (foton indeksi Γ ∼ 1.97) iyi tanımlanmaktadır ve yüksek soğurma sütun yoğunluğuna (NH ∼12.1x1022 cm-2) sahiptir. Ayrıca, bu çalışmada gelecek nesil X-ışın uyduları olan XRISM ve Athena simülasyonları da sunulmuştur. Her iki simülasyonda da ısısal ışımadan gelen Mg ve Si çizgi salmaları açıkça görülmüştür ve bu da kalıntıda hala süpernova patlamasının izleri olduğunu gösterir.

Anahtar Kelimeler

• X-ışınları
• Süpernova kalıntıları
• G12.8-0.0
• Isısal ve ısısal olmayan ışıma.

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