Exploring the X-ray and gamma-ray properties of the redback millisecond pulsar PSR J1723-2837

Abstract

We have investigated the X-ray and $\gamma$-ray properties of the redback millisecond pulsar PSR J1723-2837 with XMM-Newton, Chandra and Fermi. We have discovered the X-ray orbital modulation of this binary system with the minimum that coincides with the phases of radio eclipse. The X-ray emission is clearly non-thermal in nature which can be well described by a simple power-law with a photon index of $\sim 1.2$. The phase-averaged luminosity is $\sim 9\times 10^{31}$ erg/s in 0.3-10 keV which consumes $\sim 0.2\%$ of the spin-down power. We have detected the $\gamma -$ray emission in $0.1-300$ GeV from this system at a significance of $\sim 6\sigma$ for the first time. The $\gamma -$rays in this energy range consumes $\sim 2\%$ of the spin-down power and can be modeled by a power-law with a photon index of $\sim 2.6$. We discuss the high energy properties of the new redback in the context of a intrabinary shock model.

13 pages, 3 figures, accepted for publication in ApJ Letter

References in corpus (3)

• A Radio Pulsar/X-ray Binary Link
• A New Accretion Disk Around the Missing Link Binary System PSR J1023+0038
• X-ray Variability and Evidence for Pulsations from the Unique Radio Pulsar/X-ray Binary Transition Object FIRST J102347.6+003841

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• Pressure Balance and Intrabinary Shock Stability in Rotation-Powered State Redback and Transitional Millisecond Pulsar Binary Systems
• Exploring the intrabinary shock from the redback millisecond pulsar PSR J2129-0429
• Discovery of an ultracompact gamma-ray millisecond pulsar binary candidate
• The MAVERIC survey: A hidden pulsar and a black hole candidate in ATCA radio imaging of the globular cluster NGC 6397
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• A NuSTAR Observation of the Gamma-ray Emitting Millisecond Pulsar PSR J1723-2837
• A deep Chandra survey for faint X-ray sources in the Galactic globular cluster M30, and searches for optical and radio counterparts
• A comparison of millisecond pulsar populations between globular clusters and the Galactic field
• The neutron star population in M28: a joint Chandra/GBT look at pulsar paradise
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