Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pulsar Timing for the Fermi Gamma-ray Space Telescope   We describe a comprehensive pulsar monitoring campaign for the Large Area
Telescope (LAT) on the {\em Fermi Gamma-ray Space Telescope} (formerly GLAST).
The detection and study of pulsars in gamma rays give insights into the
populations of neutron stars and supernova rates in the Galaxy, into particle
acceleration mechanisms in neutron star magnetospheres, and into the "engines"
driving pulsar wind nebulae. LAT's unprecedented sensitivity between 20 MeV and
300 GeV together with its 2.4 sr field-of-view makes detection of many
gamma-ray pulsars likely, justifying the monitoring of over two hundred pulsars
with large spin-down powers. To search for gamma-ray pulsations from most of
these pulsars requires a set of phase-connected timing solutions spanning a
year or more to properly align the sparse photon arrival times. We describe the
choice of pulsars and the instruments involved in the campaign. Attention is
paid to verifications of the LAT pulsar software, using for example giant radio
pulses from the Crab and from PSR B1937+21 recorded at Nan\c{c}ay, and using
X-ray data on PSR J0218+4232 from XMM-Newton. We demonstrate accuracy of the
pulsar phase calculations at the microsecond level. Data Table 1 is only
available in electronic form at the CDS via anonymous ftp to
cdsarc.u-strasbg.fr (130.79.128.5) or via
http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/ .

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The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
2
The categories of this paper are: math
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The categories of this paper are: comp-gas
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The categories of this paper are: adap-org
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The categories of this paper are: eess
0
The categories of this paper are: hep-ph
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The categories of this paper are: funct-an
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The categories of this paper are: cmp-lg
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The categories of this paper are: dg-ga
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The categories of this paper are: physics
10
The categories of this paper are: q-bio
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The categories of this paper are: supr-con
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The categories of this paper are: solv-int
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The categories of this paper are: cond-mat
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The categories of this paper are: nucl-th