Thermal properties of the middle-aged pulsar J1741–2054

Journal Article · Thu Jul 10 00:00:00 EDT 2014 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/789/2/97· OSTI ID:22365729

Karpova, A.; Danilenko, A.; Shibanov, Yu.; Shternin, P.

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.

• OSTI ID: 22365729
• Journal Information: Astrophysical Journal, Vol. 789, Issue 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
DENSITY
DISTANCE
EMISSION
NEUTRON STARS
NEUTRONS
PULSARS
SPECTRA
THERMODYNAMIC PROPERTIES
X RADIATION