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• W2062439144 abstract "Using XMM-Newton and Chandra, we achieved phase-connected timing of the 105 ms X-ray pulsar PSR J1852+0040 that provides the first measurement of the spin-down rate of a member of the class of central compact objects (CCOs) in supernova remnants. We measure , and find no evidence for timing noise or variations in X-ray flux over 4.8 year. In the dipole spin-down formalism, this implies a surface magnetic field strength Bs = 3.1 × 1010 G, the smallest ever measured for a young neutron star, and consistent with being a fossil field. In combination with upper limits on Bs from other CCO pulsars, this is strong evidence in favor of the anti-magnetar explanation for their low luminosity and lack of magnetospheric activity or synchrotron nebulae. While this dipole field is small, it can prevent accretion of sufficient fall-back material so that the observed X-ray luminosity of Lx = 5.3 × 1033(d/7.1 kpc)2 erg s−1 must instead be residual cooling. The spin-down luminosity of PSR J1852+0040, erg s−1, is an order of magnitude smaller than Lx. Fitting of the X-ray spectrum to two blackbodies finds small emitting radii, R1 = 1.9 km and R2 = 0.45 km, for components of kT1 = 0.30 keV and kT2 = 0.52 keV, respectively. Such small, hot regions are ubiquitous among CCOs, and are not yet understood in the context of the anti-magnetar picture because anisotropic surface temperature is usually attributed to the effects of strong magnetic fields." @default.
• W2062439144 created "2016-06-24" @default.
• W2062439144 creator A5042877906 @default.
• W2062439144 creator A5086229423 @default.
• W2062439144 date "2009-12-31" @default.
• W2062439144 modified "2023-10-06" @default.
• W2062439144 title "SPIN-DOWN MEASUREMENT OF PSR J1852+0040 IN KESTEVEN 79: CENTRAL COMPACT OBJECTS AS ANTI-MAGNETARS" @default.
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• W2062439144 doi "https://doi.org/10.1088/0004-637x/709/1/436" @default.
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