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Suzaku observation of the Galactic supernova remnant CTB 37A (G348.5+0.1)
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Date
2011-10-01
Author
Sezer, A.
GÖK, FATMA
Hudaverdi, M.
ERCAN, ENİSE NİHAL
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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In this paper, we present the results of the observations of CTB 37A obtained with the X-ray imaging spectrometer onboard the Suzaku satellite. The X-ray spectrum of CTB 37A is fitted well by two components: a single-temperature ionization equilibrium component (VMEKAL), with solar abundances, an electron temperature of kTe similar to 0.6 keV and an absorbing column density of NH similar to 3 x 1022 cm-2, and a power-law component with a photon index of G similar to 1.6. The X-ray spectrum of CTB 37A is characterized by clearly detected K-shell emission lines of Mg, Si, S and Ar. The plasma with solar abundances supports the idea that the X-ray emission originates from the shocked interstellar material. The ambient gas density and the age of the remnant are estimated to be similar to 1f-1/2 cm-3 and similar to 3 x 104f1/2 yr, respectively. The centre-filling X-ray emission, surrounded by a shell-like radio structure, and other X-ray properties indicate that this remnant could be a new member of the class of mixed-morphology supernova remnants.
Subject Keywords
ISM: individual objects: CTB 37A
,
ISM: supernova remnants
,
X-rays: ISM
URI
https://hdl.handle.net/11511/67462
Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
DOI
https://doi.org/10.1111/j.1365-2966.2011.19357.x
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Unclassified, Article