Suzaku observation of the Galactic supernova remnant CTB 37A (G348.5+0.1)

Download

index.pdf

Date

2011-10-01

Author

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

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

141
views

0
downloads

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

Collections

Unclassified, Article

Suggestions

OpenMETU
Core

The first optical light from the supernova remnant G182.4+4.3 located in the Galactic anticentre region Sezer, A.; GÖK, FATMA; Aktekin, E. (2012-12-01) We report the discovery of optical filamentary and diffuse emission from G182.4+4.3 using the 1.5-m Russian-Turkish telescope. We present the optical CCD images obtained with the H alpha filter, revealing the presence of mainly filamentary structure to the north-west and filamentary and diffuse structure in the centre, south and north regions of the remnant. The bright optical filaments located in the north-west and south regions are well correlated with the prominent radio shell of the remnant, strongly su...
Discovery of recombining plasma inside the extended gamma-ray supernova remnant HB9 Sezer, A.; Ergin, Tülün; Yamazaki, R.; Sano, H.; Fukui, Y. (2019-11-01) We present the results from the Suzaku X-ray Imaging Spectrometer observation of the mixed-morphology supernova remnant (SNR) HB9 (G160.9+2.6). We discovered recombining plasma (RP) in the western Suzaku observation region and the spectra here are well described by a model having collisional ionization equilibrium (CIE) and RP components. On the other hand, the X-ray spectra from the eastern Suzaku observation region are best reproduced by the CIE and non-equilibrium ionization model. We discuss possible sc...
Suzaku and Fermi observations of the supernova remnant G1.9+0.3 GÖK, FATMA; Ergin, Tülün (2015-10-15) We present results from the observation of the supernova remnant (SNR) G1.9 + 0.3, which is the youngest known SNR in the Milky Way, with the X-ray imaging spectrometer (XIS) on board Suzaku. We investigate the nature of the X-ray emission and compare our results with the previous X-ray studies. Additionally, we present the analysis results of the GeV gamma-ray data taken for about 6 years by the Large Area Telescope on board Fermi and discuss these results in the framework of existing gamma-ray emission sc...
RECOMBINING PLASMA IN THE GAMMA-RAY-EMITTING MIXED-MORPHOLOGY SUPERNOVA REMNANT 3C 391 Ergin, Tülün; Sezer, A.; Saha, L.; Majumdar, P.; Chatterjee, A.; Bayirli, A.; Ercan, E. N. (2014-07-20) A group of middle-aged mixed-morphology (MM) supernova remnants (SNRs) interacting with molecular clouds (MCs) has been discovered to be strong GeV gamma-ray emitters by the Large Area Telescope (LAT) on board the Fermi Gamma-Ray Space Telescope (Fermi-LAT). The recent observations of the Suzaku X-ray satellite have revealed that some of these interacting gamma-ray-emitting SNRs, such as IC443, W49B, W44, and G359.1-0.5, have overionized plasmas. 3C 391 (G31.9+ 0.0) is another GalacticMMSNR interacting with...
Suzaku study of the centrally brightened supernova remnant G272.2-3.2 Sezer, A.; GÖK, FATMA (2012-04-01) In this paper, we present the results from a Suzaku observation of the Galactic supernova remnant G272.2-3.2. The spectra of G272.2-3.2 are well fitted by a single-temperature variable abundance non-equilibrium ionization (VNEI) model with an electron temperature kTe similar to 0.77 keV, an ionization time-scale t similar to 6.5 x 1010 cm-3 s and an absorbing column density NH similar to 1.1 x 1022 cm-2. We have detected enhanced abundances of Si, S, Ca, Fe and Ni in the centre region, indicating that the X...

Citation Formats

A. Sezer, F. GÖK, M. Hudaverdi, and E. N. ERCAN, “Suzaku observation of the Galactic supernova remnant CTB 37A (G348.5+0.1),” MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, pp. 1387–1391, 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/67462.