Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Magnetar-like Outburst from a High-B Radio Pulsar   Radio pulsars are believed to have their emission powered by the loss of
rotational kinetic energy. By contrast, magnetars show intense X-ray and
gamma-ray radiation whose luminosity greatly exceeds that due to spin-down and
is believed to be powered by intense internal magnetic fields. A basic
prediction of this picture is that radio pulsars of high magnetic field should
show magnetar-like emission. Here we report on a magnetar-like X-ray outburst
from the radio pulsar PSR J1119-6127, heralded by two short bright X-ray bursts
on 2016 July 27 and 28 (Kennea et al. 2016; Younes et al. 2016). Using
Target-of-Opportunity data from the Swift X-ray Telescope and NuSTAR, we show
that this pulsar's flux has brightened by a factor of > 160 in the 0.5-10 keV
band, and its previously soft X-ray spectrum has undergone a strong hardening,
with strong pulsations appearing for the first time above 2.5 keV, with
phase-averaged emission detectable up to 25 keV. By comparing Swift-XRT and
NuSTAR timing data with a pre-outburst ephemeris derived from Fermi Large Area
Telescope data, we find that the source has contemporaneously undergone a large
spin-up glitch of amplitude df/f = 5.74(8) E-6. The collection of phenomena
observed thus far in this outburst strongly mirrors those in most magnetar
outbursts and provides an unambiguous connection between the radio pulsar and
magnetar populations.

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The categories of this paper are: stat
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The categories of this paper are: econ
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The categories of this paper are: hep-ph
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The categories of this paper are: hep-th
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The categories of this paper are: bayes-an
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The categories of this paper are: patt-sol
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The categories of this paper are: math-ph
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The categories of this paper are: solv-int
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The categories of this paper are: eess
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The categories of this paper are: q-fin
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The categories of this paper are: hep-ex
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The categories of this paper are: cond-mat
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The categories of this paper are: math
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-bio
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The categories of this paper are: hep-lat