Chandra Proper Motions and Milliarcsecond Astrometry of Nineteen Pulsars

Abstract

We present X-ray proper motion (PM) measurements of 19 pulsars using new and archival data from the Chandra X-ray Observatory, including pulsar wind trails and X-ray filaments. Precise X-ray PMs are often limited by uncertainties in aligning observations to a common reference frame. Our analysis uses unresolved X-ray flux from stars in the Gaia catalog in addition to X-ray bright point sources for alignment, improving uncertainties. We obtain absolute positions referenced to Gaia with typical astrometric precision $\sim$10 mas and PM statistical uncertainties down to 1.3 mas yr${}^{-1}$, the most precise X-ray PM achieved to date. With our improved frame alignment, PM accuracies are now limited by the pulsar flux in most cases. These results reveal a new X-ray filament and illuminate the wind nebula structures and origins of several of these pulsars.

11 + 3 pages, 4 figures, 2 tables. Accepted for publication in ApJ

References in corpus (20)

• Gaia Data Release 3: Summary of the content and survey properties
• galpy: A Python Library for Galactic Dynamics
• A New Electron Density Model for Estimation of Pulsar and FRB Distances
• The First LHAASO Catalog of Gamma-Ray Sources
• A parsec-scale Galactic 3D dust map out to 1.25 kpc from the Sun
• Pulsar Wind Nebulae Created by Fast-Moving Pulsars
• X-ray Observations of Parsec-Scale Tails behind Two Middle-Aged Pulsars
• On the X-ray feature associated with the Guitar Nebula
• Distances, Radial Distribution and Total Number of Galactic Supernova Remnants
• X-ray analysis of the proper motion and pulsar wind nebula for PSR J1741-2054
• High resolution HI and radio continuum observations of the SNR G290.1-0.8
• GASKAP Pilot Survey Science II: ASKAP Zoom Observations of Galactic 21-cm Absorption
• PSR J2030+4415's Remarkable Bow Shock, PWN and Filament
• A detailed X-ray investigation of PSR J2021+4026 and $\gamma$-Cygni supernova remnant
• The Proper Motion of the Pulsar J1124-5916 in the Galactic Supernova Remnant G292.0+1.8
• Search for OB associations in {\sl Gaia} early Data Release 3
• PSR J1709-4429's Proper Motion and its Relationship to SNR G343.1-2.3
• X-ray studies of the gamma-ray pulsar J1826-1256 and its pulsar wind nebula with Chandra and XMM-Newton
• A Catalog of Pulsar X-ray Filaments
• Investigating the mysterious nature of 1LHAASO J1740+0948u through deep XMM-Newton observations