Suzaku Observation of 30Dor C: A Supernova Remnant with the Largest Non-Thermal Shell

Abstract

This paper reports on the Suzaku results of thermal and non-thermal features of 30 Dor C, a supernova remnant (SNR) in a superbubble of the Large Magellanic Cloud (LMC). The west rim exhibits a non-thermal X-ray spectrum with no thermal component. A single power-law model is rejected but a power-law model with spectral cutoff is accepted. The cutoff frequency of $(3-7)\times 10^{17}$ Hz is the highest among the shell type SNRs like SN 1006 ($\sim 6\times 10^{16}$ Hz), and hence 30 Dor C would be the site of the highest energy accelerator of the SNR shock. The southeast (SE) and northeast (NE) rims have both the thermal and non-thermal components. The thin-thermal plasmas in the both rims are in collisional ionization equilibrium state. The electron temperature of the plasma in the SE rim ($k{T}_e\sim 0.7$ keV) is found to be higher than the previously reported value. The power-law index from SE is nearly the same as, while that from the NE is larger than that of the West rim. The SNR age would be in the range of $(4-20)\times 10^3$ yr. Thus, 30 Dor C is likely to be the oldest shell-like SNR with non-thermal emission.

7pages, 6 figures, accepted for publication in PASJ

References in corpus (7)

• Reproducibility of Non-X-ray Background for the X-ray Imaging Spectrometer aboard Suzaku
• The X-ray synchrotron emission of RCW 86 and the implications for its age
• Diffuse, Non-Thermal X-ray Emission from the Galactic Star Cluster Westerlund 1
• Performance of the Charge Injection Capability of Suzaku XIS
• Suzaku wide-band observations of SN 1006
• Measuring the Broad-band X-Ray Spectrum from 400 eV to 40 keV in the Southwest Part of the Supernova Remnant RX J1713.7-3946
• Suzaku Observation of the RCW86 Northeastern Shell

Cited by in corpus (17)

• The exceptionally powerful TeV gamma-ray emitters in the Large Magellanic Cloud
• XMM-Newton study of 30 Dor C and a newly identified MCSNR J0536-6913 in the Large Magellanic Cloud
• Progenitor Mass Distribution of Core-Collapse Supernova Remnants in Our Galaxy and Magellanic Clouds based on Elemental Abundances
• Discovery of Recombining Plasma in the Supernova Remnant 3C 391
• Discovery of Molecular and Atomic Clouds Associated with the Magellanic Superbubble 30 Doradus C
• Magnetic field estimates from the X-ray synchrotron emitting rims of the 30 Dor C superbubble and the implications for the nature of 30 Dor C's TeV emission
• Chandra ACIS Survey of M33 (ChASeM33): The enigmatic X-ray emission from IC131
• Searching for Diffuse Nonthermal X-Rays from the Superbubbles N11 and N51D in the Large Magellanic Cloud
• Evidence of Particle Acceleration in the Superbubble 30 Doradus C with NuSTAR
• Sensitivity of the Cherenkov Telescope Array to TeV photon emission from the Large Magellanic Cloud
• Widely Extended [OIII] 88 um Line Emission around the 30 Doradus Region Revealed with AKARI FIS-FTS
• Very-high-energy $\gamma$-ray emission from young massive star clusters in the Large Magellanic Cloud
• A Spatially Resolved Study of X-ray Properties in Superbubble 30 Dor C with $XMM-Newton$
• A spatially resolved study of hard X-ray emission in Kepler's SNR: indications of different regimes of particle acceleration
• A Super Bubble Candidate in the Galactic Center and a Local Enhancement G359.77-0.09
• Supernova remnants in super bubbles as cosmic ray accelerators
• Associated molecular and atomic clouds with X-ray shell of superbubble 30 Doradus C in the LMC