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Title: Thermal properties of the middle-aged pulsar J1741–2054

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. in 2010 that the pulsar spectrum contains a thermal emission component. The component is best described by the blackbody model with temperature ≈60 eV and emitting area radius ≈17 D{sub kpc} km. The thermal emission likely originates from the entire surface of the cooling neutron star if the distance to the pulsar is ≈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 this pulsar, PSR J1741–2054 is hotter than predicted by the standard cooling scenario.

Authors:
; ; ; ;  [1]
  1. Ioffe Institute Politekhnicheskaya 26, St. Petersburg 194021 (Russian Federation)
Publication Date:
OSTI Identifier:
22365729
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 789; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; DENSITY; DISTANCE; EMISSION; NEUTRON STARS; NEUTRONS; PULSARS; SPECTRA; THERMODYNAMIC PROPERTIES; X RADIATION

Citation Formats

Karpova, A., Danilenko, A., Shibanov, Yu., Shternin, P., and Zyuzin, D., E-mail: annakarpova1989@gmail.com. Thermal properties of the middle-aged pulsar J1741–2054. United States: N. p., 2014. Web. doi:10.1088/0004-637X/789/2/97.
Karpova, A., Danilenko, A., Shibanov, Yu., Shternin, P., & Zyuzin, D., E-mail: annakarpova1989@gmail.com. Thermal properties of the middle-aged pulsar J1741–2054. United States. doi:10.1088/0004-637X/789/2/97.
Karpova, A., Danilenko, A., Shibanov, Yu., Shternin, P., and Zyuzin, D., E-mail: annakarpova1989@gmail.com. Thu . "Thermal properties of the middle-aged pulsar J1741–2054". United States. doi:10.1088/0004-637X/789/2/97.
@article{osti_22365729,
title = {Thermal properties of the middle-aged pulsar J1741–2054},
author = {Karpova, A. and Danilenko, A. and Shibanov, Yu. and Shternin, P. and Zyuzin, D., E-mail: annakarpova1989@gmail.com},
abstractNote = {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. in 2010 that the pulsar spectrum contains a thermal emission component. The component is best described by the blackbody model with temperature ≈60 eV and emitting area radius ≈17 D{sub kpc} km. The thermal emission likely originates from the entire surface of the cooling neutron star if the distance to the pulsar is ≈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 this pulsar, PSR J1741–2054 is hotter than predicted by the standard cooling scenario.},
doi = {10.1088/0004-637X/789/2/97},
journal = {Astrophysical Journal},
number = 2,
volume = 789,
place = {United States},
year = {Thu Jul 10 00:00:00 EDT 2014},
month = {Thu Jul 10 00:00:00 EDT 2014}
}