Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Tale of Two Pulsars and the Origin of TeV Gamma Rays from the Galactic
  Center   The Galactic Center (GC) has been long known to host gamma-ray emission
detected to >10 TeV. HESS data now points to two plausible origins: the
supermassive black hole (perhaps with >PeV cosmic rays and neutrinos) or
high-energy electrons from the putative X-ray pulsar wind nebula G359.95-0.04
observed by Chandra and NuSTAR. We show that if the magnetic field experienced
by PWN electrons is near the several mG ambient field strength suggested by
radio observations of the nearby GC magnetar SGR J1745-29, synchrotron losses
constrain the TeV gamma-ray output to be far below the data. Accounting for the
peculiar geometry of GC infrared emission, we also find that the requisite TeV
flux could be reached if the PWN is ~1 pc from Sgr A* and the magnetic field is
two orders of magnitude weaker, a scenario that we discuss in relation to
recent data and theoretical developments. Otherwise, Sgr A* is left, which
would then be a PeV link to other AGN.

19
The categories of this paper are: eess
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph