EXPLORING THE X-RAY AND γ-RAY PROPERTIES OF THE REDBACK MILLISECOND PULSAR PSR J1723-2837

被引：17

作者：

Hui, C. Y. ^{[1
]}

Tam, P. H. T. ^{[2
,3
]}

Takata, J. ^{[4
]}

Kong, A. K. H. ^{[2
,3
]}

Cheng, K. S. ^{[4
]}

Wu, J. H. K. ^{[2
,3
]}

Lin, L. C. C. ^{[5
]}

Wu, E. M. H. ^{[4
]}

机构：

[1] Chungnam Natl Univ, Dept Astron & Space Sci, Taejon 305764, South Korea

[2] Natl Tsing Hua Univ, Inst Astron, Hsinchu, Taiwan

[3] Natl Tsing Hua Univ, Dept Phys, Hsinchu, Taiwan

[4] Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China

[5] China Med Univ, Gen Educ Ctr, Taichung 40402, Taiwan

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2014年 / 781卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

gamma rays: stars; pulsars: individual (PSR J1723-2837); X-rays: binaries; SOURCE CATALOG; BINARY;

D O I：

10.1088/2041-8205/781/1/L21

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 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 similar to 1.2. The phase-averaged luminosity is similar to 9 x 10(31) erg s(-1) in 0.3-10 keV, which consumes similar to 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 similar to 6 sigma for the first time. The gamma-rays in this energy range consume similar to 2% of the spin-down power and can be modeled by a power law with a photon index of similar to 2.6. We discuss the high energy properties of the new redback in the context of an intrabinary shock model.

引用

页数：5

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