X-ray timing observations of PSR J1930+1852 in the crab-like SNR G54.1+0.3
文献类型：期刊论文
| 作者 | Lu FJ(卢方军) ; Qu JL(屈进禄); Lu, FJ; Wang, QD; Gotthelf, EV; Qu, JL
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2007 |
| 卷号 | 663期号:1页码:315-319 |
| 关键词 | ISM : individual (G54.1+0.3) ISM : jets and outflows radiation mechanisms : nonthermal stars : individual (PSR J1930+1852) supernova remnants X-rays : ISM |
| 通讯作者 | Chinese Acad Sci, Inst High Energy Phys, Lab Particle Astrophys, Beijing 100039, Peoples R China ; Univ Massachusetts, Dept Astron, Amherst, MA 01003 USA ; Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA |
| 英文摘要 | We present new X-ray timing and spectral observations of PSR J1930+1852, the young energetic pulsar at the center of the nonthermal supernova remnant G54.1+0.3. Using data obtained with the Rossi X-Ray Timing Explorer (RXTE) and Chandra X-ray observatories we have derived an updated timing ephemeris of the 136 ms pulsar spanning 6 years. During this interval, however, the period evolution shows significant variability from the best-fit constant spin- down rate of P = 7.5112(6); 10(-13) s s(-1), suggesting strong timing noise and/ or glitch activity. The X- ray emission is highly pulsed (71% +/- 5% modulation) and is characterized by an asymmetric, broad profile (similar to 70% duty cycle) that is nearly twice the radio width. The spectrum of the pulsed emission is well fitted with an absorbed power law of photon index Gamma 1.2 +/- 0.2; this is marginally harder than that of the unpulsed component. The total 2-10 keV flux of the pulsar is 1.7 x 10(-12) ergs cm(-2) s(-1). These results confirm PSR J1930+1852 as a typical Crablike pulsar. |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000247542700025 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/236928]  |
| 专题 | 高能物理研究所_粒子天体物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Lu FJ,Qu JL,Lu, FJ,et al. X-ray timing observations of PSR J1930+1852 in the crab-like SNR G54.1+0.3[J]. ASTROPHYSICAL JOURNAL,2007,663(1):315-319. |
| APA | 卢方军,屈进禄,Lu, FJ,Wang, QD,Gotthelf, EV,&Qu, JL.(2007).X-ray timing observations of PSR J1930+1852 in the crab-like SNR G54.1+0.3.ASTROPHYSICAL JOURNAL,663(1),315-319. |
| MLA | 卢方军,et al."X-ray timing observations of PSR J1930+1852 in the crab-like SNR G54.1+0.3".ASTROPHYSICAL JOURNAL 663.1(2007):315-319. |
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来源：高能物理研究所
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