A new radio census of neutron star X-ray binaries

Abstract

We report new radio observations of a sample of thirty-six neutron star (NS) X-ray binaries, more than doubling the sample in the literature observed at current-day sensitivities. These sources include thirteen weakly-magnetised ($B<10^{10}$ G) and twenty-three strongly-magnetised ($B\ge 10^{10}$ G) NSs. Sixteen of the latter category reside in high-mass X-ray binaries, of which only two systems were radio-detected previously. We detect four weakly and nine strongly-magnetised NSs; the latter are systematically radio fainter than the former and do not exceed $L_R\approx 3\times 10^{28}$ erg/s. In turn, we confirm the earlier finding that the weakly-magnetized NSs are typically radio fainter than accreting stellar-mass black holes. While an unambiguous identification of the origin of radio emission in high-mass X-ray binaries is challenging, we find that in all but two detected sources (Vela X-1 and 4U 1700-37) the radio emission appears more likely attributable to a jet than the donor star wind. The strongly-magnetised NS sample does not reveal a global correlation between X-ray and radio luminosity, which may be a result of sensitivity limits. Furthermore, we discuss the effect of NS spin and magnetic field on radio luminosity and jet power in our sample. No current model can account for all observed properties, necessitating the development and refinement of NS jet models to include magnetic field strengths up to $10^{13}$ G. Finally, we discuss jet quenching in soft states of NS low-mass X-ray binaries, the radio non-detections of all observed very-faint X-ray binaries in our sample, and future radio campaigns of accreting NSs.

Accepted for publication in MNRAS; 31 pages, 8 figures, 8 tables (including online supplementary materials)

References in corpus (58)

• A Radio Pulsar/X-ray Binary Link
• Bright OB stars in the Galaxy - III. Constraints on the radial stratification of the clumping factor in hot star winds from a combined Halpha, IR and radio analysis
• Global optical/infrared - X-ray correlations in X-ray binaries: quantifying disc and jet contributions
• The ephemeris, orbital decay, and masses of 10 eclipsing HMXBs
• Relativistic iron emission lines in neutron star low-mass X-ray binaries as probes of neutron star radii
• The radio/X-ray domain of black hole X-ray binaries at the lowest radio luminosities
• A transient radio jet in an erupting dwarf nova
• Towards a unified view of inhomogeneous stellar winds in isolated supergiant stars and supergiant high mass X-ray binaries
• An extremely powerful long-lived superluminal ejection from the black hole MAXI J1820+070
• Strong disc winds traced throughout outbursts in black-hole X-ray binaries
• IPHAS and the symbiotic stars. I. Selection method and first discoveries
• The spectral energy distribution of compact jets powered by internal shocks
• Evidence for a jet contribution to the optical/infrared light of neutron star X-ray binaries
• An XMM-Newton view of FeKα in HMXBs
• Disk-jet coupling in low-luminosity accreting neutron stars
• Radio monitoring of the hard state jets in the 2011 outburst of MAXI J1836-194
• NuSTAR Observations of the Accreting Atolls GX 3+1, 4U 1702-429, 4U 0614+091, and 4U 1746-371
• An in-depth study of a neutron star accreting at low Eddington rate: On the possibility of a truncated disk and an outflow
• The nature of very faint X-ray binaries; hints from light curves
• Biases for neutron-star mass, radius and distance measurements from Eddington-limited X-ray bursts
• Dwarf nova-type cataclysmic variable stars are significant radio emitters
• New ephemeris of the ADC source 2A 1822-371: a stable orbital-period derivative over 30 years
• High-Resolution X-Ray Spectroscopy of the Bursting Pulsar GRO J1744-28
• Long term variability of Cygnus X-1: VII. Orbital variability of the focussed wind in Cyg X-1 / HDE 226868 system
• Spectral differences between the jets in `radio loud' and `radio quiet' hard state black hole binaries
• Rapid compact jet quenching in the Galactic black hole candidate X-ray binary MAXI J1535-571
• The large-scale jet-powered radio nebula of Circinus X-1
• The clumpy absorber in the high-mass X-ray binary Vela X-1
• On the timing properties of SAX J1808.4-3658 during its 2015 outburst
• X-ray Reflection and An Exceptionally Long Thermonuclear Helium Burst from IGR J17062-6143
• Evidence for a parsec scale X-ray jet from the accreting neutron star Circinus X-1
• Spectral and Timing Nature of the Symbiotic X-ray Binary 4U 1954+319: The Slowest Rotating Neutron Star in an X-ray Binary System
• Magnetic Field Upper Limits for Jet Formation
• Jet quenching in the neutron star low-mass X-ray binary 1RXS J180408.9$-$342058
• Further evidence for the presence of a neutron star in 4U 2206+54. INTEGRAL and VLA observations
• The First Simultaneous X-Ray/Radio Detection of the First Be/BH System MWC 656
• X-ray broad-band study of the symbiotic X-ray binary 4U 1954+31
• Registration of the First Thermonuclear X-ray Burst from AX J1754.2-2754
• Simultaneous NuSTAR/Chandra observations of the Bursting Pulsar GRO J1744-28 during its third reactivation
• ALMA observations of 4U 1728-34 and 4U 1820-30: first detection of neutron star X-ray binaries at 300 GHz
• Hard X-ray Bursts Detected by the IBIS Telescope Onboard the INTEGRAL Observatory in 2003-2004
• The twisted jets of Circinus X-1
• A connection between accretion states and the formation of ultra-relativistic outflows in a neutron star X-ray binary
• Internal shocks driven by accretion flow variability in the compact jet of the black hole binary GX 339-4
• The First NuSTAR Observation of 4U 1538-522: Updated Orbital Ephemeris and A Strengthened Case for an Evolving Cyclotron Line Energy
• Sub-mm Jet Properties of the X-Ray Binary Swift J1745$-$26
• Complete Multiwavelength Evolution of Galactic Black Hole Transients During Outburst Decay II: Compact Jets and X-ray Variability Properties
• A re-establishing jet during an X-ray re-brightening of the Be/X-ray binary Swift J0243.6+6124
• A JVLA survey of the high frequency radio emission of the massive magnetic B- and O-type stars
• The Flare-Dominated Accretion Mode of a Radio-Bright Candidate Transitional Millisecond Pulsar
• Radio emission from the X-ray pulsar Her X-1: a jet launched by a strong magnetic field neutron star?
• Discovery of the near-infrared counterpart to the luminous neutron-star low-mass X-ray binary GX 3+1
• Exploring the spreading layer of GX 9+9 using RXTE and INTEGRAL
• Discovery of radio emission from the symbiotic X-ray binary system GX 1+4
• Flows and Shocks: Some Recent Developments in Symbiotic Star and Nova Research
• Variable millimetre radiation from the colliding-wind binary Cyg OB2 #8A
• 3xmm j181923.7$-$170616: an x-ray binary with a 408s pulsar
• On the origin of the near-infrared emission from the neutron-star low-mass X-ray binary GX 9+1

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