Suzaku observations of ejecta-dominated Galactic supernova remnant G346.6-0.2

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2011-07-01

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Sezer, A.
GÖK, FATMA
Hudaverdi, M.
Kimura, M.
ERCAN, ENİSE NİHAL

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We present here the results of an X-ray analysis of Galactic supernova remnant G346.6-0.2 observed with Suzaku. K-shell emission lines of Mg, Si, S, Ca and Fe are detected clearly for the first time. Strong emission lines of Si and S imply that the X-ray emission nature of G346.6-0.2 is ejecta-dominated. The ejecta-dominated emission is well fitted by a combined model consisting of a thermal plasma in non-equilibrium ionization and a non-thermal component, which can be regarded as synchrotron emission with a photon index of Gamma similar to 0.6. An absorbing column density of N-H similar to 2.1 x 10(22) cm(-2) is obtained from the best fit, implying a high-density medium, high electron temperature of kT(e) similar to 1.2 keV and ionization time-scale of n(e)t similar to 2.9 x 10(11) cm(-3) s, indicating that this remnant may be far from full ionization equilibrium. The relative abundances from the ejecta show that the remnant originates from a Type Ia supernova explosion.

Subject Keywords

Space and Planetary Science, Astronomy and Astrophysics

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https://hdl.handle.net/11511/67918

Journal

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

DOI

https://doi.org/10.1111/j.1365-2966.2011.18710.x

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Citation Formats

A. Sezer, F. GÖK, M. Hudaverdi, M. Kimura, and E. N. ERCAN, “Suzaku observations of ejecta-dominated Galactic supernova remnant G346.6-0.2,” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, pp. 301–305, 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/67918.