EXPLORING THE X-RAY AND γ-RAY PROPERTIES OF THE REDBACK MILLISECOND PULSAR PSR J1723–2837
- Department of Astronomy and Space Science, Chungnam National University, Daejeon 305-764 (Korea, Republic of)
- Institute of Astronomy and Department of Physics, National Tsing Hua University, Hsinchu, Taiwan (China)
- Department of Physics, University of Hong Kong, Pokfulam Road (Hong Kong)
- General Education Center, China Medical University, Taichung 40402, Taiwan (China)
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 a minimum that coincides with the phases of radio eclipse. The X-ray emission is clearly non-thermal in nature, which can be described well by a simple power law with a photon index of ∼1.2. The phase-averaged luminosity is ∼9 × 10{sup 31} erg s{sup –1} in 0.3-10 keV, which consumes ∼0.2% of the spin-down power. We have detected the γ-ray emission in 0.1-300 GeV from this system at a significance of ∼6σ for the first time. The γ-rays in this energy range consume ∼2% of the spin-down power and can be modeled by a power law with a photon index of ∼2.6. We discuss the high energy properties of the new redback in the context of an intrabinary shock model.
- OSTI ID:
- 22364032
- Journal Information:
- Astrophysical Journal Letters, Vol. 781, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 2041-8205
- Country of Publication:
- United States
- Language:
- English
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