Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A "Cosmic Comb" Model of Fast Radio Bursts   Recent observations of fast radio bursts (FRBs) indicate a perplexing,
inconsistent picture. We propose a unified scenario to interpret diverse FRBs
observed. A regular pulsar, otherwise unnoticeable at a cosmological distance,
may produce a bright FRB if its magnetosphere is suddenly "combed" by a nearby,
strong plasma stream towards the anti-stream direction. If the Earth is to the
night side of the stream, the combed magnetic sheath would sweep across the
direction of Earth and make a detectable FRB. The stream could be an AGN flare,
a GRB or supernova blastwave, a tidal disruption event, or even a stellar
flare. Since it is the energy {\em flux} received by the pulsar rather than the
luminosity of the stream origin that defines the properties of the FRB, this
model predicts a variety of counterparts of FRBs, including a possible
connection between FRB 150418 and an AGN flare, a possible connection between
FRB 131104 and a weak GRB, a steady radio nebula associated with the repeating
FRB 121102, and probably no bright counterparts for some FRBs.

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The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
17
The categories of this paper are: q-fin
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
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The categories of this paper are: math
28
The categories of this paper are: alg-geom
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The categories of this paper are: stat
30
The categories of this paper are: q-alg
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The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an