A Braking Index for the Young, High-Magnetic-Field, Rotation-Powered Pulsar in Kes 75

Abstract

We present the first phase-coherent measurement of a braking index for the young, energetic rotation-powered pulsar PSR J1846-0258. This 324 ms pulsar is located at the center of the supernova remnant Kes 75 and has a characteristic age of tau_c = 723 years, a spin-down energy of 8.3x10^{36}erg/s, and inferred magnetic field of 4.9x10^{13} G. Two independent phase-coherent timing solutions are derived which together span 5.5 yr of data obtained with the Rossi X-ray Timing Explorer. In addition, a partially phase-coherent timing analysis confirms the fully phase-coherent result. The measured value of the braking index, n=2.65+/-0.01, is significantly less than 3, the value expected from magnetic dipole radiation, implying another physical process must contribute to the pulsar's rotational evolution. Assuming the braking index has been constant since birth, we place an upper limit on the spin-down age of J1846-0258 of 884 yr, the smallest age estimate of any rotation-powered pulsar.

Includes major changes to analysis. Updated postion used for the pulsar which significantly changed the result and conclusions of the paper. 21 pages, 6 Figures. ApJ submitted

References in corpus (1)

• A Debris Disk Around An Isolated Young Neutron Star

Cited by in corpus (61)

• A study of 315 glitches in the rotation of 102 pulsars
• The H.E.S.S. Galactic plane survey
• Neutron Stars and the Nuclear Equation of State
• The 1st Fermi Lat Supernova Remnant Catalog
• Magnetar-like Emission from the Young Pulsar in Kes 75
• Modeling the spectral evolution of PWNe inside SNRs
• Grand Unification in Neutron Stars
• Detection of 107 glitches in 36 southern pulsars
• The glitch-induced identity changes of PSR J1119-6127
• 16 Years of RXTE Monitoring of Five Anomalous X-ray Pulsars
• First search for gravitational waves from the youngest known neutron star
• A Magnetar-like Outburst from a High-B Radio Pulsar
• Pulsar Timing for the Fermi Gamma-ray Space Telescope
• New Phase-coherent Measurements of Pulsar Braking Indices
• Post-outburst Observations of the Magnetically Active Pulsar J1846-0258: a new braking index, increased timing noise, and radiative recovery
• The soft gamma-ray pulsar population: an high-energy overview
• The Distance of the SNR Kes 75 and PWN PSR J1846-0258 System
• Swift 1644+57: The Longest Gamma-ray Burst?
• Study of Four Young TeV Pulsar Wind Nebulae with a Spectral Evolution Model
• Deep Chandra Observation of the Pulsar Wind Nebula Powered by the Pulsar J1846-0258 in the Supernova Remnant Kes 75
• The Expansion and Radio Spectral Index of G21.5-0.9: Is PSR J1833-1034 the Youngest Pulsar?
• Superfluid turbulence and pulsar glitch statistics
• Pulsar magnetic alignment and the pulsewidth-age relation
• Timing behavior of the Magnetically Active Rotation-Powered Pulsar in the Supernova Remnant Kestevan 75
• Pulsar Braking Indices, Glitches and Energy Dissipation In Neutron Stars
• Observations of four glitches in the young pulsar J1833-1034 and study of its glitch activity
• The wind nebula around magnetar Swift J1834.9-0846
• The Mipsgal View of Supernova Remnants in the Galactic Plane
• Is PSR B0943+10 a low-mass quark star?
• On the braking index of the unusual high-B rotation-powered pulsar PSR J1846-0258
• G11.2-0.3: The Young Remnant of a Stripped-Envelope Supernova
• AXPs/SGRs: Magnetars or Quark-stars?
• Observations of X-rays and Thermal Dust Emission from the Supernova Remnant Kes 75
• Expansion and Brightness Changes in the Pulsar-Wind Nebula in the Composite Supernova Remnant Kes 75
• Could SXP 1062 be an Accreting Magnetar?
• No detectable radio emission from the magnetar-like pulsar in Kes 75
• Soft X-ray Polarization in Thermal Magnetar Emission
• Anti-glitch of magnetar 1E 2259+586 in the wind braking scenario
• Why do the braking indices of pulsars span a range of more than 100 millions?
• Comparing supernova remnants around strongly magnetized and canonical pulsars
• Fast fossil rotation of neutron star cores
• Observations of Energetic High Magnetic Field Pulsars with the Fermi Large Area Telescope
• What can the braking indices tell us about pulsars' nature?
• The Fermi LAT detection of magnetar-like pulsar PSR J1846-0258 at high-energy gamma-rays
• Infrared and X-Ray Spectroscopy of the Kes 75 Supernova Remnant Shell: Characterizing the Dust and Gas Properties
• INTEGRAL detection of the pulsar wind nebula in PSR J1846-0258
• Fluctuating neutron star magnetosphere: braking indices of eight pulsars, frequency second derivatives of 222 pulsars and 15 magnetars
• On the Diversity of Compact Objects within Supernova Remnants. I: A Parametric Model for Magnetic Field Evolution
• Testing Models of Magnetic Field Evolution of Neutron Stars with the Statistical Properties of Their Spin Evolutions
• The Duck Redux: An Improved Proper Motion Upper Limit for the Pulsar B1757-24 Near the Supernova Remnant G5.4-1.2
• Reactivation of the high-magnetic field pulsar PSR J1846--0258 with magnetar-like bursts
• The influence of fallback discs on the spectral and timing properties of neutron stars
• Quantum Vacuum Friction in Highly Magnetized Neutron Stars
• The rocket effect mechanism in neutron stars in supernova remnants
• On the Diversity of Compact Objects within Supernova Remnants II: Energy Loss Mechanisms
• Pulsar current revisited
• Astrophysics in 2006
• Observation of Very High Energy Gamma Rays from HESS J1804-216 with CANGAROO-III Telescopes
• A search for radio pulsars in five nearby supernova remnants
• On the variable timing behavior of PSR B0540-69: an almost excellent example to study pulsar braking mechanism
• Spatio-spectral-temporal Modelling of Two Young Pulsar Wind Nebulae