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arXiv · 1311.0223

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

C. Y. Hui·P. H. T. Tam·J. Takata·A. K. H. Kong·K. S. Cheng·J. H. K. Wu·L. C. C. Lin·E. M. H. Wu
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Abstract

We have investigated the X-ray and $γ$-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 $\sim1.2$. The phase-averaged luminosity is $\sim9\times10^{31}$ erg/s in 0.3-10 keV which consumes $\sim0.2\%$ of the spin-down power. We have detected the $γ-$ray emission in $0.1-300$ GeV from this system at a significance of $\sim6σ$ for the first time. The $γ-$rays in this energy range consumes $\sim2\%$ of the spin-down power and can be modeled by a power-law with a photon index of $\sim2.6$. We discuss the high energy properties of the new redback in the context of a intrabinary shock model.

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C. Y. Hui, P. H. T. Tam, J. Takata, A. K. H. Kong, K. S. Cheng, J. H. K. Wu, L. C. C. Lin, E. M. H. Wu. 2013-12-24. Exploring the X-ray and gamma-ray properties of the redback millisecond pulsar PSR J1723-2837. https://doi.org/10.1088/2041-8205%2F781%2F1%2Fl21

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