The Duck Redux: An Improved Proper Motion Upper Limit for the Pulsar B1757-24 Near the Supernova Remnant G5.4-1.2

Abstract

"The Duck" is a complicated non-thermal radio system, consisting of the energetic radio pulsar B1757-24, its surrounding pulsar wind nebula G5.27-0.90 and the adjacent supernova remnant (SNR) G5.4-1.2. PSR B1757-24 was originally claimed to be a young (~15 000 yr) and extreme velocity (>~1500 km/s) pulsar which had penetrated and emerged from the shell of the associated SNR G5.4-1.2, but recent upper limits on the pulsar's motion have raised serious difficulties with this interpretation. We here present 8.5 GHz interferometric observations of the nebula G5.27-0.90 over a 12-year baseline, doubling the time-span of previous measurements. These data correspondingly allow us to halve the previous upper limit on the nebula's westward motion to 14 milliarcseconds/yr (5-sigma), allowing a substantive reevaluation of this puzzling object. We rule out the possibility that the pulsar and SNR were formed from a common supernova explosion ~15 000 yrs ago as implied by the pulsar's characteristic age, but conclude that an old (>~70 000 yr) pulsar / SNR association, or a situation in which the pulsar and SNR are physically unrelated, are both still viable explanations.

arXiv comment9 pages, including 1 color and 1 B/W figure. Minor changes following referee's report. ApJ, in press

References in corpus (24)

• The ATNF Pulsar Catalogue
• The ATNF Pulsar Catalogue
• A statistical study of 233 pulsar proper motions
• The Velocity Distribution of Isolated Radio Pulsars
• Neutron star magnetic field evolution, crust movement and glitches
• Pulsar Wind Nebulae in Evolved Supernova Remnants
• New Constraints on the Structure and Evolution of the Pulsar Wind Nebula 3C 58
• The Radio Lifetime of Supernova Remnants and the Distribution of Pulsar Velocities at Birth
• An evolutionary model for pulsar-driven supernova remnants
• Proper motion, age and initial spin period of PSR J0538+2817 in S147
• Chandra Observations of G11.2-0.3: Implications for Pulsar Ages
• A Braking Index for the Young, High-Magnetic-Field, Rotation-Powered Pulsar in Kes 75
• Proper Motion Measurements of Pulsar B1951+32 in the Supernova Remnant CTB 80
• Interaction of High-Velocity Pulsars with Supernova Remnant Shells
• X-ray Detection of Pulsar PSR B1757-24 and its Nebular Tail
• Long-term Phase-coherent X-ray Timing of PSR B0540-69
• PSR J1016-5857: a young radio pulsar with possible supernova remnant, X-ray, and gamma-ray associations
• CHANDRA Observations of the X-ray Halo around the Crab Nebula
• Does Pulsar B1757--24 Have a Fallback Disk?
• Decapitating the Duck: The (non)association of PSR B1757-24 and supernova remnant G5.4-1.2
• Radio pulsars as progenitors of AXPs and SGRs: magnetic field evolution through pulsar glitches
• The evolution of core and surface magnetic field in isolated neutron stars
• Can the age discrepancies of neutron stars be circumvented by an accretion-assisted torque?
• On the origin of the system PSR B1757-24/SNR G5.4-1.2

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• Pulsar Wind Nebulae Created by Fast-Moving Pulsars
• Evidence for alignment of the rotation and velocity vectors in pulsars. II. Further data and emission heights
• Discovery of New Interacting Supernova Remnants in the Inner Galaxy
• Pulsar Spin--Velocity Alignment: Further Results and Discussion
• X-ray emission from PSR B1800-21, its wind nebula, and similar systems
• A Proper Motion for the Pulsar Wind Nebula G359.23-0.82, "the Mouse," Associated with the Energetic Radio Pulsar J1747-2958
• Proper Motions of PSRs B1757-24 and B1951+32: Implications for Ages and Associations
• Statistical ages and the cooling rate of X-ray dim isolated neutron stars