SIMBAD references

2008ApJ...678L..43K - Astrophys. J., 678, L43-L46 (2008/May-1)

Variability of the high magnetic field X-ray pulsar PSR J1846-0258 associated with the supernova remnant Kes 75 as revealed by the Chandra X-ray observatory.


Abstract (from CDS):

We present results from the archival Chandra observations of the 0.3 s X-ray pulsar PSR J1846-0258 associated with the supernova remnant (SNR) Kes 75. The pulsar has the highest spin-down luminosity (E{dot} = 8.3x1036 ergs/s) among all the high magnetic field pulsars (HBPs) and has been classified as a Crab-like pulsar despite its magnetic field (5x10^ 13^ G) being above the quantum critical field. It is the only HBP described by a nonthermal Crab-like spectrum, powering a bright pulsar wind nebula (PWN). Our spectroscopic study shows evidence of spectral softening (photon index Γ = 1.32+0.08–0.09 to 1.97+0.05–0.07) and temporal brightening [unabsorbed flux Funabs= (4.3±0.2)x10–12 to 2.7+0.1–0.2 x10–11 ergs/cm2/s] of the pulsar by ∼6 times from 2000 to 2006. The 0.5-10 keV luminosity of the pulsar at the revised distance of 6 kpc has also increased from LX= (1.85±0.08)x1034 to 1.16+0.03–0.07 x1035 ergs/s, and the X-ray efficiency increased from 0.2%±0.01% to 1.4+0.04–0.08%. The observed X-ray brightening and softening of the pulsar suggests for the first time that this HBP is revealing itself as a magnetar.

Abstract Copyright:

Journal keyword(s): Stars: Pulsars: Individual: Alphanumeric: PSR J1846-0258 - ISM: Supernova Remnants - X-Rays: General

Simbad objects: 7

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