Properties of shocked dust grains in supernova remnants

Abstract

Shockwaves driven by supernovae both destroy dust and reprocess the surviving grains, greatly affecting the resulting dust properties of the interstellar medium (ISM). While these processes have been extensively studied theoretically, observational constraints are limited. We use physically-motivated models of dust emission to fit the infrared (IR) spectral energy distributions of seven Galactic supernova remnants, allowing us to determine the distribution of dust mass between diffuse and dense gas phases, and between large and small grain sizes. We find that the dense ($\sim 10^3{\mathrm{cm}}^{-3}$), relatively cool ($\sim 10^3\mathrm{K}$) gas phase contains $>90\%$ of the dust mass, making the warm dust located in the X-ray emitting plasma ($\sim 1{\mathrm{cm}}^{-3}$/$10^6\mathrm{K}$) a negligible fraction of the total, despite dominating the mid-IR emission. The ratio of small ($\lesssim 10\mathrm{nm}$) to large ($\gtrsim 0.1\mu \mathrm{m}$) grains in the cold component is consistent with that in the ISM, and possibly even higher, whereas the hot phase is almost entirely devoid of small grains. This suggests that grain shattering, which processes large grains into smaller ones, is ineffective in the low-density gas, contrary to model predictions. Single-phase models of dust destruction in the ISM, which do not account for the existence of the cold swept-up material containing most of the dust mass, are likely to greatly overestimate the rate of dust destruction by supernovae.

13 pages, 12 figures. MNRAS accepted

References in corpus (25)

• On Pulsar Distance Measurements and their Uncertainties
• The dust mass in Cassiopeia A from a spatially resolved Herschel analysis
• Shattering and coagulation of dust grains in interstellar turbulence
• Destruction of Interstellar Dust in Evolving Supernova Remnant Shock Waves
• A Nearby Galaxy Perspective on Dust Evolution. Scaling relations and constraints on the dust build-up in galaxies with the DustPedia and DGS samples
• Dust Destruction in Fast Shocks of Core-Collapse Supernova Remnants in the Large Magellanic Cloud
• Cassiopeia A: dust factory revealed via submillimetre polarimetry
• Dust Destruction in Type Ia Supernova Remnants in the Large Magellanic Cloud
• A Near-Infrared and X-ray Study of W49B: A Wind Cavity Explosion
• The distance and neutral environment of the massive stellar cluster Westerlund 1
• A Survey of Hydroxyl Toward Supernova Remnants: Evidence for Extended 1720 MHz Maser Emission
• Thermal and nonthermal dust sputtering in hydrodynamical simulations of the multiphase interstellar medium
• JINGLE -- IV. Dust, HI gas and metal scaling laws in the local Universe
• The dust content of the Crab Nebula
• Supernova remnant W49B and its environment
• The mass, location and heating of the dust in the Cassiopeia A supernova remnant
• Supernovae within Pre-existing Wind-Blown Bubbles: Dust Injection vs. Ambient Dust Destruction
• Revisiting the dust destruction efficiency of supernovae
• Supernova induced processing of interstellar dust: impact of ISM gas density and gas turbulence
• Negative and Positive Feedback from a Supernova Remnant with SHREC: A detailed Study of the Shocked Gas in IC443
• Dust masses and grain size distributions of a sample of Galactic pulsar wind nebulae
• Dust destruction and survival in the Cassiopeia A reverse shock
• The dust mass in Cassiopeia A from infrared and optical line flux differences
• Dust Cooling in Supernova Remnants in the Large Magellanic Cloud
• A Galactic Dust Devil: far-infrared observations of the Tornado Supernova Remnant candidate

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• A Catalogue of Radio Supernova Remnants and Candidate Supernova Remnants in the EMU/POSSUM Galactic Pilot Field
• Co-evolution of Dust and Chemistry in Galaxy Simulations with a Resolved Interstellar Medium
• In pursuit of giants: II. Evolution of dusty quiescent galaxies over the last six billion years from the hCOSMOS survey
• Tracing the evolutionary pathways of dust and cold gas in high-z quiescent galaxies with SIMBA
• A Catalog of Galactic Supernova Remnants and Supernova Remnant Candidates from the EMU/POSSUM Radio Sky Surveys. I
• Shocks in the warm neutral medium I -- Theoretical model
• Dust destruction by the supernova remnant forward shock in a turbulent interstellar medium
• Far-Infrared Emission from a Late Supernova Remnant in an Inhomogeneous Medium