Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Enhanced sources of acoustic power surrounding AR11429   Multi-frequency power maps of the local acoustic oscillations show acoustic
enhancements (\acoustic-power halos") at high frequencies surrounding large
active region. Computational seismic holography reveals a high-frequency
\acoustic-emission halo", or \seismic glory" surrounding large active regions.
In this study, we have applied computational seismic holography to map the
seismic seismic source density surrounding AR 11429. Studies of HMI/SDO Doppler
data, shows that the "acoustic halos" and the "seismic glories" are prominent
at high frequencies 5-8 mHz. We investigate morphological properties of
acoustic-power and acoustic emission halos around an active region to see if
they are spatially correlated. Details about the local magnetic field from
vectormagnetograms of AR 11429 are included. We identify a 15" region of
seismic deficit power (dark moat) shielding the white-light boundary of the
active region. The size of the seismic moat is related to region of
intermediate magnetic field strength. The acoustic moat is circled by the halo
of enhanced seismic amplitude as well as enhanced seismic emission. Overall,
the results suggest that features are related. However, if we narrow the
frequency band to 5.5-6.5 mHz, we find that the seismic source density
dominates over the local acoustic power, suggesting the existence of sources
that emit more energy downward into the solar interior than upward toward the
solar surface.

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The categories of this paper are: nucl-ex
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The categories of this paper are: atom-ph
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The categories of this paper are: q-fin
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The categories of this paper are: comp-gas
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The categories of this paper are: gr-qc
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The categories of this paper are: acc-phys
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The categories of this paper are: solv-int
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The categories of this paper are: econ
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The categories of this paper are: hep-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: mtrl-th
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The categories of this paper are: chem-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: nlin
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The categories of this paper are: patt-sol
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The categories of this paper are: eess