SIMBAD references

2005ApJ...628L..45K - Astrophys. J., 628, L45-L48 (2005/July-3)

A coherent timing solution for the nearby isolated neutron star RX J0720.4-3125.


Abstract (from CDS):

We present the results of a dedicated effort to measure the spin-down rate of the nearby isolated neutron star RX J0720.4-3125. Comparing arrival times of the 8.39 s pulsations for data from Chandra, we derive an unambiguous timing solution for RX J0720.4-3125 that is accurate to <0.1 cycles over >5 years. Adding data from XMM and ROSAT, the final solution yields P{dot}=(6.98±0.02)x10–14 s/s; for dipole spin-down, this implies a characteristic age of 2 Myr and a magnetic field strength of 2.4x1013G. The phase residuals are somewhat larger than those for purely regular spin-down, but they do not show conclusive evidence for higher order terms or a glitch. From our timing solution as well as recent X-ray spectroscopy, we concur with recent suggestions that RX J0720.4-3125 is most likely an off-beam radio pulsar with a moderately high magnetic field.

Abstract Copyright:

Journal keyword(s): Stars: Pulsars: Individual: Alphanumeric: RX J0720.4-3125 - Stars: Neutron - X-Rays: Stars

Simbad objects: 5

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