Shiva is a new simulation tool that computes time-dependent dust size distributions and band gap energy evolution for HAC grains under photo-processing, sputtering, and shattering in specified interstellar conditions.
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Radiative-transfer simulations with common dust models generate a range of spectral indices but cannot reach the lowest observed emissivity indices in protostars without invoking unexpectedly large millimeter-sized grains.
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Shiva: the dust destruction model
Shiva is a new simulation tool that computes time-dependent dust size distributions and band gap energy evolution for HAC grains under photo-processing, sputtering, and shattering in specified interstellar conditions.
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Pristine composition or size evolution: Can current dust models reproduce emissivities observed in nearby protostars?
Radiative-transfer simulations with common dust models generate a range of spectral indices but cannot reach the lowest observed emissivity indices in protostars without invoking unexpectedly large millimeter-sized grains.