Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observation of Reconstructable Radio Emission Coincident with an X-Class
  Solar Flare in the Askaryan Radio Array Prototype Station   The Askaryan Radio Array (ARA) reports an observation of radio emission
coincident with the "Valentine's Day" solar flare on Feb. 15$^{\rm{th}}$, 2011
in the prototype "Testbed" station. We find $\sim2000$ events that passed our
neutrino search criteria during the 70 minute period of the flare, all of which
reconstruct to the location of the sun. A signal analysis of the events reveals
them to be consistent with that of bright thermal noise correlated across
antennas. This is the first natural source of radio emission reported by ARA
that is tightly reconstructable on an event-by-event basis. The observation is
also the first for ARA to point radio from individual events to an
extraterrestrial source on the sky. We comment on how the solar flares, coupled
with improved systematic uncertainties in reconstruction algorithms, could aid
in a mapping of any above-ice radio emission, such as that from cosmic-ray air
showers, to astronomical locations on the sky.

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
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th