A multi-wavelength view of the neutron star binary 1FGL J1417.7--4402: A progenitor to canonical millisecond pulsars

Abstract

The Fermi $\gamma$-ray source 1FGL J1417.7--4407 (J1417) is a compact X-ray binary with a neutron star primary and a red giant companion in a $\sim$5.4 day orbit. This initial conclusion, based on optical and X-ray data, was confirmed when a 2.66 ms radio pulsar was found at the same location (and with the same orbital properties) as the optical/X-ray source. However, these initial studies found conflicting evidence about the accretion state and other properties of the binary. We present new optical, radio, and X-ray observations of J1417 that allow us to better understand this unusual system. We show that one of the main pieces of evidence previously put forward for an accretion disk---the complex morphology of the persistent H$\alpha$ emission line---can be better explained by the presence of a strong, magnetically driven stellar wind from the secondary and its interaction with the pulsar wind. The radio spectral index derived from VLA/ATCA observations is broadly consistent with that expected from a millisecond pulsar, further disfavoring an accretion disk scenario. X-ray observations show evidence for a double-peaked orbital light curve, similar to that observed in some redback millisecond pulsar binaries and likely due to an intrabinary shock. Refined optical light curve fitting gives a distance of 3.1$\pm$0.6 kpc, confirmed by a Gaia DR2 parallax measurement. At this distance the X-ray luminosity of J1417 is (1.0${}_{-0.3}^{+0.4}$) $\times 10^{33}$ erg s${}^{-1}$, which is more luminous than all known redback systems in the rotational-powered pulsar state, perhaps due to the wind from the giant companion. The unusual phenomenology of this system and its differing evolutionary path from redback millisecond pulsar binaries points to a new eclipsing pulsar "spider" subclass that is a possible progenitor of normal field millisecond pulsar binaries.

14 pages, 7 figures, 6 tables, Accepted for publication in ApJ

References in corpus (24)

• Estimating distances from parallaxes IV: Distances to 1.33 billion stars in Gaia Data Release 2
• Achieving better than 1 minute accuracy in the Heliocentric and Barycentric Julian Dates
• A Radio Pulsar/X-ray Binary Link
• Data analysis recipes: Using Markov Chain Monte Carlo
• Three Millisecond Pulsars in FERMI LAT Unassociated Bright Sources
• Discovery of PSR J1227-4853: A transition from a low-mass X-ray binary to a redback millisecond pulsar
• The radio/X-ray domain of black hole X-ray binaries at the lowest radio luminosities
• X-ray Variability and Evidence for Pulsations from the Unique Radio Pulsar/X-ray Binary Transition Object FIRST J102347.6+003841
• Hard state neutron star and black hole X-ray binaries in the radio:X-ray luminosity plane
• Disk-jet coupling in low-luminosity accreting neutron stars
• SDSS J102347.6+003841: A Millisecond Radio Pulsar Binary That Had A Hot Disk During 2000-2001
• The 2015 Decay of the Black Hole X-ray Binary V404 Cygni: Robust Disk-Jet Coupling and a Sharp Transition into Quiescence
• Binary Pulsar Distances and Velocities from Gaia Data Release 2
• Simultaneous Chandra and VLA Observations of the Transitional Millisecond Pulsar PSR J1023+0038: Anti-correlated X-ray and Radio Variability
• A Spectroscopic Study of the Extreme Black Widow PSR J1311-3430
• Unveiling the redback nature of the low-mass X-ray binary XSSJ1227.0-4859 through optical observations
• B-ducted Heating of Black Widow Companions
• A new gamma-ray loud, eclipsing low-mass X-ray binary
• 1FGL J1417.7-4407: A likely gamma-ray bright binary with a massive neutron star and a giant secondary
• Discovery of Gamma-ray Pulsations from the Transitional Redback PSR J1227-4853
• A Likely Redback Millisecond Pulsar Counterpart of 3FGL J0838.8-2829
• Properties of the redback millisecond pulsar binary 3FGL J0212.1+5320
• Up and Down the Black Hole Radio/X-ray Correlation: the 2017 mini-outbursts from Swift J1753.5-0127
• 2FGL J0846.0+2820: A new neutron star binary with a giant secondary and variable $\gamma$-ray emission

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• X-ray Through Very-High-Energy Intrabinary Shock Emission from Black Widows and Redbacks
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• A New Candidate Transitional Millisecond Pulsar in the Sub-luminous Disk State: 4FGL J0407.7--5702
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• A New Likely Redback Millisecond Pulsar Binary with a Massive Neutron Star: 4FGL J2333.1--5527
• PSR J1306--40: An X-ray Luminous Redback with an Evolved Companion
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• The MAVERIC Survey: New compact binaries revealed by deep radio continuum observations of the Galactic globular cluster Terzan 5
• The MAVERIC Survey: Simultaneous Chandra and VLA observations of the transitional millisecond pulsar candidate NGC 6652B
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• 4FGL J1120.0-2204: A Unique Gamma-ray Bright Neutron Star Binary with an Extremely Low Mass Proto-White Dwarf
• Investigating cannibalistic millisecond pulsar binaries using MESA: New constraints from pulsar spin and mass evolution
• The $\text{False Widow}$ Link Between Neutron Star X-ray Binaries and Spider Pulsars
• Luminous Optical and X-ray Flaring of the Putative Redback Millisecond Pulsar 1FGL J0523.5$-$2529
• A 2 day orbital period for a redback millisecond pulsar candidate in the globular cluster NGC 6397
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• X-ray and Radio Studies of the candidate Millisecond Pulsar Binary 4FGL J0935.3+0901
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• Direct nonparametric multimessenger constraints on the equation of state of cold dense nuclear matter
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