Resolving the bow shock and tail of the cannonball pulsar PSR J0002+6216

Abstract

We present X-ray and radio observations of the recently-discovered bow shock pulsar wind nebula associated with PSR J0002+6216, characterizing the PWN morphology, which was unresolved in previous studies. The multi-frequency, multi-epoch Very Large Array radio observations reveal a cometary tail trailing the pulsar and extending up to 5.3', with multiple kinks along the emission. The presented radio continuum images from multi-configuration broadband VLA observations are one of the first results from the application of multi-term multi-frequency synthesis deconvolution in combination with the awproject gridder implemented in the Common Astronomy Software Applications package (CASA). The X-ray emission observed with Chandra extends to only 21'', fades quickly, and has some hot spots present along the extended radio emission. These kinks could indicate the presence of density variation in the local ISM or turbulence. The bow shock standoff distance estimates a small bow shock region with a size 0.003-0.009 pc, consistent with the pulsar spin-down power of Edot=1.51x10^35 ergs/s estimated from timing. The high-resolution radio image reveals the presence of an asymmetry in the bow shock region which is also present in the X-ray image. The broadband radio image shows an unusually steep spectrum along with a flat-spectrum sheath, which could indicate varying opacity or energy injection into the region. Spatially-resolved X-ray spectra provide marginal evidence of synchrotron cooling along the extended tail. Our analysis of the X-ray data also shows that this pulsar has a low spin-down power and one of the lowest X-ray efficiencies observed in these objects.

arXiv comment15 pages, 7 figures Accepted for publication in ApJ

References in corpus (25)

• Array Programming with NumPy
• The ATNF Pulsar Catalogue
• HI4PI: A full-sky HI survey based on EBHIS and GASS
• A statistical study of 233 pulsar proper motions
• CASA, the Common Astronomy Software Applications for Radio Astronomy
• A multi-scale multi-frequency deconvolution algorithm for synthesis imaging in radio interferometry
• A Dynamical Model for the Evolution of a Pulsar Wind Nebula inside a Non-Radiative Supernova Remnant
• Wide-field wide-band interferometric imaging:The WB A-Projection and hybrid algorithms
• The Expanded Very Large Array
• Pulsar wind nebulae with bow shocks: non-thermal radiation and cosmic ray leptons
• Pulsar Wind Nebulae Created by Fast-Moving Pulsars
• Smashing the Guitar: An Evolving Neutron Star Bow Shock
• Interaction of a magnetized pulsar wind with its surroundings. MHD simulations of Pulsar Wind Nebulae
• Millisecond Pulsars, TeV Halos, and Implications For The Galactic Center Gamma-Ray Excess
• Mass-loading of bow shock pulsar wind nebulae
• Full-3D relativistic MHD simulations of Bow Shock Pulsar Wind Nebulae: dynamics
• An Extreme Pulsar Tail Protruding from the Frying Pan Supernova Remnant
• On the broad-band synchrotron spectra of pulsar wind nebulae
• Deep wideband single pointings and mosaics in radio interferometry - How accurately do we reconstruct intensities and spectral indices of faint sources?
• The Tail of PSR J0002+6216 and the Supernova Remnant CTB 1
• Modelling the bow shock Pulsar Wind Nebulae propagating through a non-uniform ISM
• A Laminar Model for the Magnetic Field Structure in Bow-Shock Pulsar Wind Nebulae
• The Long Filament of PSR J2030+4415
• Escape of High Energy Particles from Bow-Shock Pulsar Wind Nebulae
• Bow-shock Pulsar Wind Nebulae Passing Through Density Discontinuities

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