Simulations of Mixed Morphology Supernova Remnants With Anisotropic Thermal Conduction

Abstract

We explore the role of anisotropic thermal conduction on the evolution of supernova remnants through interstellar media with a range of densities via numerical simulations. We find that a remnant expanding in a dense environment can produce centre-bright hard x-ray emission within 20 kyr, and centre-bright soft x-ray emission within 60 kyr of the supernova event. In a more tenuous environment, the appearance of a centre-bright structure in hard x-rays is delayed until about 60 kyr. The soft x-ray emission from such a remnant may not become centre bright during its observable lifetime. This can explain the observations that show that mixed-morphology supernova remnants preferentially occur close to denser, molecular environments. Remnants expanding into denser environments tend to be smaller, making it easier for thermal conduction to make larger changes in the temperatures of their hot gas bubbles. We show that the lower temperatures make it very favorable to use high-stage ions as diagnostics of the hot gas bubbles in SNRs. In particular, the distribution of O VIII transitions from shell-bright at early epochs to centre-bright at later epochs in the evolution of an SNR expanding in a dense ISM when the physics of thermal conduction is included.

arXiv comment8 pages, 5 figures, submitted to Monthly Notices

References in corpus (25)

• Collisional Plasma Models with APEC/APED: Emission Line Diagnostics of Hydrogen-like and Helium-like Ions
• Ionization balance for optically thin plasmas: rate coefficients for all atoms and ions of the elements H to Ni
• Line formation in solar granulation: IV. [O I], OI and OH lines and the photospheric O abundance
• Thermal Conduction in Clusters of Galaxies
• Second Order Accurate Schemes for Magnetohydrodynamics With Divergence-Free Reconstruction
• Divergence-Free Adaptive Mesh Refinement for Magnetohydrodynamics
• Line formation in solar granulation VI. [C I], C I, CH and C2 lines and the photospheric C abundance
• Volume Filling Factors of the ISM Phases in Star Forming Galaxies - I. The Role of the Disk-Halo Interaction
• Enhancement and suppression of heat transfer by MHD turbulence
• The Distribution of Pressures in a Supernova-Driven Interstellar Medium. I. Magnetized Medium
• Modeling W44 as a Supernova Remnant in a Density Gradient, with a Partially Formed Dense Shell and Thermal Conduction in the Hot Interior
• Generation of Magnetic Fields in the Multi-phase ISM with Supernova-Driven Turbulence
• X-ray Absorption Line Spectroscopy of the Galactic Hot Interstellar Medium
• Properties of O VI Absorption in the Local Interstellar Medium
• $10^{51}$ Ergs: The Evolution of Shell Supernova Remnants
• A Survey of OVI Absorption in the Local Interstellar Medium
• Ionization States and Plasma Structures of Mixed-morphology SNRs Observed with ASCA
• Chandra High-Resolution X-Ray Spectrum of Supernova Remnant 1E0102.2-7219
• Chandra X-ray Observatory Arcsecond Imaging of the Young, Oxygen-rich Supernova Remnant 1E0102.2-7219
• The Evolution of Adiabatic Supernova Remnants in a Turbulent, Magnetized Medium
• Radio Emission from a Young Supernova Remnant Interacting with an Interstellar Cloud: MHD Simulation with Relativistic Electrons
• Amplification of Interstellar Magnetic Fields and Turbulent Mixing by Supernova-Driven Turbulence Part II - The Role of Dynamical Chaos
• Testing Global ISM Models: A Detailed Comparison of Ovi Column Densities with FUSE and Copernicus Data
• A Useful Approximation to the Cooling Coefficient of Trace Elements
• Anisotropic Thermal Conduction in Supernova Remnants: Relevance to Hot Gas Filling Factors in the Magnetized ISM

Cited by in corpus (15)

• Star Formation in the Central 400 pc of the Milky Way: Evidence for a Population of Massive YSOs
• The Interstellar Magnetic Field Close to the Sun II
• An implicit scheme for solving the anisotropic diffusion of heat and cosmic rays in the RAMSES code
• Alfvenic Turbulence Beyond the Ambipolar Diffusion Scale
• The intrinsic and interstellar broadband linear polarization of nearby FGK dwarfs
• Radiative Supernova Remnants and Supernova Feedback
• Simulating Anisotropic Thermal Conduction in Supernova Remnants, Implications for the Interstellar Medium
• On the metal abundances inside mixed-morphology supernova remnants: the case of IC443 and G166.0+4.3
• The X-ray Properties of Five Galactic Supernova Remnants Detected by the Spitzer GLIMPSE Survey
• Discovery of a New X-ray Filled Radio Supernova Remnant Around the Pulsar Wind Nebula in 3EG J1809-2328
• On the existence of "radio thermally active" Galactic supernova remnants
• Discovery of Broad Molecular lines and of Shocked Molecular Hydrogen from the Supernova Remnant G357.7+0.3: HHSMT, APEX, Spitzer and SOFIA Observations
• Far-Ultraviolet Cooling Features of the Antlia Supernova Remnant
• Dynamical evolution of supernova remnants breaking through molecular clouds
• Effects of radiative losses on the relativistic jets of high-mass microquasars