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arXiv · 1405.5041

Thermal properties of the middle-aged pulsar J1741-2054

A. Karpova·A. Danilenko·Yu. Shibanov·P. Shternin·D. Zyuzin
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Abstract

We present results of the spectral analysis of the X-ray emission from the middle-aged Fermi pulsar J1741$-$2054 using all Chandra archival data collected in 2010 and 2013. We confirm early findings by Romani et al. 2010 that the pulsar spectrum contains a thermal emission component. The component is best described by the blackbody model with the temperature $\approx$ 60 eV and the emitting area radius $\approx$ 17 $D_{\rm kpc}$ km. The thermal emission likely originates from the entire surface of the cooling neutron star if the distance to the pulsar is $\approx$ 0.8 kpc. The latter is supported by a large absorbing column density inferred from the X-ray fit and empirical optical extinction--distance relations along the pulsar line of sight. The neutron star surface temperature and characteristic age make it similar to the well studied middle-aged pulsar B1055$-$52. Like the latter PSR J1741$-$2054 is hotter than the standard cooling scenario predicts.

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A. Karpova, A. Danilenko, Yu. Shibanov, P. Shternin, D. Zyuzin. 2014-05-20. Thermal properties of the middle-aged pulsar J1741-2054. https://doi.org/10.1088/0004-637x/789/2/97

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