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| Understanding the X-ray spectrum of anomalous X-ray pulsars and soft gamma-ray repeaters | |
Guo, Yan-Jun1,2; Dai, Shi1,2; Li, Zhao-Sheng1,2; Liu, Yuan3; Tong, Hao4 ; Xu, Ren-Xin1,2,5
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| 2015-04-01 | |
| Source Publication | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
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| Volume | 15Issue:4Pages:525-536 |
| Abstract | Hard X-rays above 10 keV are detected from several anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs), and different models have been proposed to explain the physical origin within the frame of either a magnetar model or a fallback disk system. Using data from Suzaku and INTEGRAL, we study the soft and hard X-ray spectra of four AXPs/SGRs: 1RXS J170849-400910, 1E 1547.0-5408, SGR 1806-20 and SGR 0501+4516. It is found that the spectra could be well reproduced by the bulk-motion Comptonization (BMC) process as was first suggested by Trumper et al., showing that the accretion scenario could be compatible with Xray emission from AXPs/SGRs. Simulated results from the Hard X-ray Modulation Telescope using the BMC model show that the spectra would have discrepancies from the power-law, especially the cutoff at similar to 200 keV. Thus future observations will allow researchers to distinguish different models of the hard X-ray emission and will help us understand the nature of AXPs/SGRs. |
| Keyword | Stars: Neutron X-rays: Stars Pulsars: Individual (1e 1547.0-5408 1rxs J170849-400910 Sgr 0501+4516 Sgr 1806-20) |
| Subtype | Article |
| DOI | 10.1088/1674-4527/15/4/006 |
| WOS Headings | Science & Technology ; Physical Sciences |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | NEUTRON-STARS ; 1E 1547.0-5408 ; QUARK-STARS ; 4U 0142+61 ; MAGNETARS ; EMISSION ; SUZAKU ; MODEL ; ELECTRODYNAMICS ; DISCOVERY |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000352130400006 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/643 |
| Collection | 射电天文研究室_脉冲星研究团组 射电天文研究室 |
| Affiliation | 1.Peking Univ, Sch Phys, Beijing 100871, Peoples R China 2.Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China 3.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 5.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China |
| Recommended Citation GB/T 7714 | Guo, Yan-Jun,Dai, Shi,Li, Zhao-Sheng,et al. Understanding the X-ray spectrum of anomalous X-ray pulsars and soft gamma-ray repeaters[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2015,15(4):525-536. |
| APA | Guo, Yan-Jun,Dai, Shi,Li, Zhao-Sheng,Liu, Yuan,Tong, Hao,&Xu, Ren-Xin.(2015).Understanding the X-ray spectrum of anomalous X-ray pulsars and soft gamma-ray repeaters.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,15(4),525-536. |
| MLA | Guo, Yan-Jun,et al."Understanding the X-ray spectrum of anomalous X-ray pulsars and soft gamma-ray repeaters".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 15.4(2015):525-536. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 1674-4527_15_4_525.p（465KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-ND | View Application Full Text | |
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