A Census of Pulsars in Possible Association with Galactic Open Clusters

Abstract

Among the $\sim 4000$ known pulsars in our Galaxy, $\lesssim 10\%$ are found in globular clusters, but none has been confirmed in any open clusters yet, although they outnumber globular clusters by about 20 times. In this work, we make use of the Gaia DR3 catalog of Galactic open clusters and conduct a pulsar census, in order to identify pulsars that are either 1) current members of open clusters, or 2) escaped from open clusters to the field. Among 164 pulsars with independent distance measurements and 3530 open clusters, we find that 4 pulsars are likely residing in open clusters. In particular, we find compelling evidence that the binary pulsar J1302$-$6350 (B1259$-$63) is a member of the open cluster UBC~525; based on Gaia data, we update its distance to be $2.26\pm 0.07$~kpc and measure the mass of its companion Be star LS 2883 to be $16.8M_{\odot }$. For 145 pulsars with both distance and proper motion measurements and 2967 open clusters with full kinematic parameters, we trace the past trajectories of both pulsars and open clusters in the Galactic gravitational potential, and find pulsars that were within 3 times the radius of a cluster. This results in 19 pulsars that were likely born in open clusters. We discuss implications for the formation history of PSR J1302$-$6350 and highlight the scientific potential of searching for pulsars in open clusters.

17 pages, 8 figures, published in The Astrophysical Journal Letters

References in corpus (36)

• Array Programming with NumPy
• Astropy: A Community Python Package for Astronomy
• The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
• The Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package
• The ATNF Pulsar Catalogue
• galpy: A Python Library for Galactic Dynamics
• A statistical study of 233 pulsar proper motions
• A New Electron Density Model for Estimation of Pulsar and FRB Distances
• Gaia Early Data Release 3: Photometric content and validation
• Vertical waves in the solar neighbourhood in Gaia DR2
• On the origin of the O and B-type stars with high velocities II Runaway stars and pulsars ejected from the nearby young stellar groups
• The Vela Pulsar's proper motion and parallax derived from VLBI observations
• On Pulsar Distance Measurements and their Uncertainties
• Timing stability of millisecond pulsars and prospects for gravitational-wave detection
• VLBA Measurement of Nine Pulsar Parallaxes
• Improving the open cluster census. III. Using cluster masses, radii, and dynamics to create a cleaned open cluster catalogue
• PARSEC V2.0: Stellar tracks and isochrones of low and intermediate mass stars with rotation
• Microarcsecond VLBI pulsar astrometry with PSR$\pi$ II. parallax distances for 57 pulsars
• YBC, a stellar bolometric corrections database with variable extinction coefficients: an application to PARSEC isochrones
• Astrophysical parameters of LS2883 and implications for the PSR B1259-63 gamma-ray binary
• Isolated neutron stars: Magnetic fields, distances, and spectra
• The distance and radius of the neutron star PSR B0656+14
• The kinematics and orbital dynamics of the PSR B1259$-$63/LS 2883 system from 23 years of pulsar timing
• Binary Pulsar Distances and Velocities from Gaia Data Release 2
• The neutron star mass, distance, and inclination from precision timing of the brilliant millisecond pulsar J0437$-$4715
• The High Time Resolution Universe Pulsar Survey X: Discovery of four millisecond pulsars and updated timing solutions of a further 12
• The gamma-ray millisecond pulsar deathline, revisited - New velocity and distance measurements
• The geometric distance and binary orbit of PSR B1259-63
• Modelling unresolved binaries of open clusters in color-magnitude diagram. I. method and application of NGC3532
• PSRs J0248+6021 and J2240+5832: Young Pulsars in the Northern Galactic Plane. Discovery, Timing, and Gamma-ray observations
• Pulsar lensing geometry
• Far UV and Optical Emissions from Three Very Large Supernova Remnants Located at Unusually High Galactic Latitudes
• Neutron stars from young nearby associations the origin of RXJ1605.3+3249
• MiMO: Mixture Model for Open Clusters in Color-Magnitude Diagrams
• The Neutron Star Born in the Antlia Supernova Remnant
• PSR J1922+37: a 1.9-second pulsar discovered in the direction of the old open cluster NGC 6791

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