Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the origin of 3 seismic sources in the proton-rich flare of October
  28, 2003   The 3 seismic sources S1, S2 and S3 detected from MDI dopplergrams using the
time-distance diagram technique are presented with the locations, areas and
vertical and horizontal velocities of the visible wave displacements. Within
the datacube of 120 Mm the horizontal velocities and the wave propagation times
slightly vary from source to source. The momenta and start times measured from
the TD diagrams in the sources S1-S3 are compared with those delivered to the
photosphere by different kinds of high energy particles with the parameters
deduced from hard X-ray and $\gamma$-ray emission as well as by the
hydrodynamic shocks caused by these particles. The energetic protons (power
laws combined with quasi-thermal ones, or jets) are shown to deliver momentum
high enough and to form the hydrodynamic shocks deeply in a flaring atmosphere
that allows them to be delivered to the photosphere through much shorter
distances and times. Then the seismic waves observed in the sources S2 and S3
can be explained by the momenta produced by hydrodynamic shocks which are
caused by mixed proton beams and jets occurring nearly simultaneously with the
third burst of hard X-ray (HXR) and $\gamma$-ray emission in the loops with
footpoints in the locations of these sources. The seismic wave in the source
S1, delayed by 4 and 2 minutes from the first and second HXR bursts,
respectively, is likely to be associated with a hydrodynamic shock occurring in
this loop from precipitation of a very powerful and hard electron beam with
higher energy cutoff mixed with quasi-thermal protons generated by either of
these 2 bursts.

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The categories of this paper are: chem-ph
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
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The categories of this paper are: q-fin
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The categories of this paper are: q-alg
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The categories of this paper are: dg-ga
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The categories of this paper are: quant-ph
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
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The categories of this paper are: funct-an
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The categories of this paper are: patt-sol
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The categories of this paper are: acc-phys