Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Characterisation of shock wave signatures at millimetre wavelengths from
  Bifrost simulations   Observations at millimetre wavelengths provide a valuable tool to study the
small scale dynamics in the solar chromosphere. We evaluate the physical
conditions of the atmosphere in the presence of a propagating shock wave and
link that to the observable signatures in mm-wavelength radiation, providing
valuable insights into the underlying physics of mm-wavelength observations. A
realistic numerical simulation from the 3D radiative Magnetohydrodynamic (MHD)
code Bifrost is used to interpret changes in the atmosphere caused by shock
wave propagation. High-cadence (1 s) time series of brightness temperature
(T$_\text{b}$) maps are calculated with the Advanced Radiative Transfer (ART)
code at the wavelengths $1.309$ mm and $1.204$ mm, which represents opposite
sides of spectral band~$6$ of the Atacama Large Millimeter/submillimeter Array
(ALMA). An example of shock wave propagation is presented. The brightness
temperatures show a strong shock wave signature with large variation in
formation height between $\sim0.7$ to $1.4$ Mm. The results demonstrate that
millimetre brightness temperatures efficiently track upwardly propagating shock
waves in the middle chromosphere. In addition, we show that the gradient of the
brightness temperature between wavelengths within ALMA band $6$ can potentially
be utilised as a diagnostics tool in understanding the small-scale dynamics at
the sampled layers.

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The categories of this paper are: gr-qc
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The categories of this paper are: math
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
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The categories of this paper are: hep-ex
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The categories of this paper are: cs
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The categories of this paper are: cond-mat
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The categories of this paper are: physics
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The categories of this paper are: comp-gas
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The categories of this paper are: solv-int
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The categories of this paper are: hep-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: acc-phys
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The categories of this paper are: adap-org
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-lat