Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Solar flares as harbinger of new physics   This work provides additional evidence on the involvement of exotic particles
like axions and/or other WISPs, following recent measurements during the
quietest Sun and flaring Sun. Thus, SPHINX mission observed a minimum basal
soft X-rays emission in the extreme solar minimum in 2009. The same scenario
(with ~17 meV axions) fits also the dynamical behaviour of white-light solar
flares, like the measured spectral components in the visible and in soft
X-rays, and, the timing between them. Solar chameleons remain a viable
candidate, since they may preferentially convert to photons in outer space.

12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat