On the formation of over-ionized plasma in evolved supernova remnants

Abstract

One of the outstanding mysteries surrounding the rich diversity found in supernova remnants (SNRs) is the recent discovery of over-ionized or recombining plasma from a number of dynamically evolved objects. To help decipher its formation mechanism, we have developed a new simulation framework capable of modeling the time evolution of the ionization state of the plasma in an SNR. The platform is based on a one-dimensional hydrodynamics code coupled to a fully time-dependent non-equilibrium ionization calculation, accompanied by a spectral synthesis code to generate space-resolved broadband X-ray spectra for SNRs at arbitrary ages. We perform a comprehensive parametric survey to investigate the effects of different circumstellar environments on the ionization state evolution in SNRs up to a few 10,000 years. A two-dimensional parameter space, spanned by arrays of interstellar medium (ISM) densities and mass-loss rates of the progenitor, is used to create a grid of models for the surrounding environment, in which a core-collapse explosion is triggered. Our results show that a recombining plasma can be successfully reproduced in the case of a young SNR (a few 100 to 1,000 years old) expanding fast in a spatially extended low-density wind, an old SNR (> a few 1,000 years) expanding in a dense ISM, or an old SNR broken out from a confined dense wind region into a tenuous ISM. Finally, our models are confronted with observations of evolved SNRs, and an overall good agreement is found except for a couple of outliers.

arXiv commentAccepted for publication in the Astrophysical Journal

References in corpus (61)

• The NumPy array: a structure for efficient numerical computation
• On the Absorption of X-rays in the Interstellar Medium
• Updated Atomic Data and Calculations for X-ray Spectroscopy
• The Expansion Asymmetry and Age of the Cassiopeia A Supernova Remnant
• Tables of Nuclear Cross Sections and Reaction Rates: an Addendum to the Paper "Astrophysical Reaction Rates from Statistical Model Calculations"
• A Spatial and Spectral Study of Nonthermal Filaments in Historical Supernova Remnants: Observational Results with Chandra
• A new radiative cooling curve based on an up to date plasma emission code
• Efficient cosmic ray acceleration, hydrodynamics, and Self-consistent Thermal X-ray Emission applied to SNR RX J1713.7-3946
• A Bow Shock Nebula Around a Compact X-Ray Source in the Supernova Remnant IC443
• Rayleigh-Taylor Instabilities in Young Supernova Remnants Undergoing Efficient Particle Acceleration
• Suzaku Discovery of the Strong Radiative Recombination Continuum of Iron from the Supernova Remnant W49B
• Particle Acceleration in Supernova Remnants and the Production of Thermal and Nonthermal Radiation
• Discovery of Strong Radiative Recombination Continua from The Supernova Remnant IC 443 with Suzaku
• ASCA Observations of the Supernova Remnant IC 443: Thermal Structure and Detection of Overionized Plasma
• Investigation of the large-scale neutral hydrogen near the supernova remnant W28
• Enhanced abundances in three large-diameter mixed-morphology supernova remnants
• A Near-Infrared and X-ray Study of W49B: A Wind Cavity Explosion
• Ionization States and Plasma Structures of Mixed-morphology SNRs Observed with ASCA
• XMM-Newton observations of the supernova remnant IC 443: II. evidence of stellar ejecta in the inner regions
• Intermediate-Mass-Elements in Young Supernova Remnants Reveal Neutron Star Kicks by Asymmetric Explosions
• ROSAT/Asca Observations of the Mixed-Morphology Supernova Remnant W28
• An X-Ray Study of Supernova Remnant N49 and Soft Gamma-Ray Repeater 0526-66 in the Large Magellanic Cloud
• X-Ray Spectrum of a Peculiar Supernova Remnant G359.1-0.5
• Recombining Plasma and Hard X-ray Filament in the Mixed-Morphology Supernova Remnant W44
• A Generalized Model of Nonlinear Diffusive Shock Acceleration Coupled to an Evolving Supernova Remnant
• Kepler's Supernova: An Overluminous Type Ia Event Interacting with a Massive Circumstellar Medium at a Very Late Phase
• XMM-Newton observations of the supernova remnant IC443: I. soft X-ray emission from shocked interstellar medium
• The Role of Diffusive Shock Acceleration on Non-Equilibrium Ionization in Supernova Remnants
• Evolutionary Models for 43 Galactic Supernova Remnants with Distances and X-ray Spectra
• The 3D Structure of N132D in the LMC: A Late-Stage Young Supernova Remnant
• Unveiling the spatial structure of the overionized plasma in the supernova remnant W49B
• An X-Ray Study of the Supernova Remnant G290.1-0.8
• Numerical Simulations of Supernova Remnant Evolution in a Cloudy Interstellar Medium
• Kinematics of Shocked Molecular Gas Adjacent to the Supernova Remnant W44
• A CR-hydro-NEI Model of Multi-wavelength Emission from the Vela Jr. Supernova Remnant (SNR RX J0852.0-4622)
• Spatial identification of the overionized plasma in W49B
• Non-equilibrium ionization in mixed-morphology supernova remnants
• Discovery of Recombining Plasma in the Supernova Remnant 3C 391
• The Transition from Young to Middle-aged Supernova Remnants: Thermal and Nonthermal Aspects of SNR N132D
• The Origin of Recombining Plasma and the Detection of the Fe-K Line in the Supernova Remnant W28
• Evidence for Rapid Adiabatic Cooling as an Origin of the Recombining Plasma in the Supernova Remnant W49B Revealed by NuSTAR Observations
• Deep XMM-Newton Observations Reveal the Origin of Recombining Plasma in the Supernova Remnant W44
• Progenitors of Recombining Supernova Remnants
• Evidence for Recombining Plasma in the Supernova Remnant G346.6-0.2
• Toward the Understanding of the Physical Origin of Recombining Plasma in the Supernova Remnant IC 443
• Evolutionary Models for 15 Galactic Supernova Remnants with New Distances
• Discovery of a jet-like structure with overionized plasma in the SNR IC443
• Supernova Remnant Kes 17: Efficient Cosmic Ray Accelerator inside a Molecular Cloud
• N49: the first robust discovery of a recombining plasma in an extra galactic supernova remnant
• Localized Recombining Plasma in G166.0+4.3: A Supernova Remnant with an Unusual Morphology
• Chandrasekhar and sub-Chandrasekhar models for the X-ray emission of Type Ia supernova remnants (I): Bulk properties
• Thermal and Non-thermal X-Rays from the Galactic Supernova Remnant G348.5+0.1
• Global Distribution of Ionizing and Recombining Plasmas in the Supernova Remnant G290.1$-$0.8
• Reverse and Forward Shock X-ray Emission in an Evolutionary Model of Supernova Remnants undergoing Efficient Diffusive Shock Acceleration
• {\it Suzaku} observation of Galactic supernova remnant CTB 37A (G348.5+0.1)
• Uniform distribution of the extremely overionized plasma associated with the supernova remnant G359.1-0.5
• Discovery of recombining plasma from the faintest GeV SNR HB 21 and a possible scenario of the cosmic ray escaping from SNR shocks
• Suzaku X-ray observations of the mixed-morphology supernova remnant CTB 1
• A Grid of Core-Collapse Supernova Remnant Models I: The Effect of Wind-Driven Mass-Loss
• Recombining Plasma & Gamma-ray Emission in the Mixed-morphology Supernova Remnant 3C 400.2
• On the Origin of the Gamma-Ray Emission toward SNR CTB 37A with $Fermi$-LAT

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