Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Sunquakes: helioseismic response to solar flares   Sunquakes observed in the form of expanding wave ripples on the surface of
the Sun during solar flares represent packets of acoustic waves excited by
flare impacts and traveling through the solar interior. The excitation impacts
strongly correlate with the impulsive flare phase, and are caused by the energy
and momentum transported from the energy release sites. The flare energy is
released in the form of energetic particles, waves, mass motions, and
radiation. However, the exact mechanism of the localized hydrodynamic impacts
which generate sunquakes is unknown. Solving the problem of the sunquake
mechanism will substantially improve our understanding of the flare physics. In
addition, sunquakes offer a unique opportunity for studying the interaction of
acoustic waves with magnetic fields and flows in flaring active regions, and
for developing new approaches to helioseismic acoustic tomography.

24
The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg