A. Sezer, F. Gök, M. Hudaverdi, E.N. Ercan. Suzaku observation of Galactic supernova remnant Ctb 37a (g348.5+0.1)

Natural Sciences / Astronomy / Astrophysics

Submitted on: Aug 22, 2012, 05:08:07

Description: We present here the results of the observation of CTB 37A obtained with the X-ray Imaging Spectrometer onboard the {it Suzaku} satellite. The X-ray spectrum of CTB 37A is well fitted by two components, a single-temperature ionization equilibrium component (VMEKAL) with solar abundances, an electron temperature of $kT_{rm e}sim0.6$ keV, absorbing column density of $N_{rm H}sim3times10^{22}$ ${rm cm^{-2}}$ and a power-law component with photon index of $Gamma$ $sim 1.6$. 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 age of the remnant are estimated to be $sim1f^{-1/2}$${rm cm^{-3}}$ and $sim3times10^{4}f^{1/2}$ yr, respectively. The center-filling X-ray emission surrounded by a shell-like radio structure and other X-ray properties indicate that this remnant would be a new member of mixed-morphology supernova remnant class.

The Library of Congress (USA) reference page : http://lccn.loc.gov/cn2013300046.

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