Integral observations of the gamma-ray binary 1fgl j1018.6-5856
文献类型：期刊论文
| 作者 | Li, Jian1; Torres, Diego F.2,3; Chen, Yupeng1; Goetz, Diego4; Rea, Nanda3; Zhang, Shu1; Caliandro, G. Andrea3; Wang, Jianmin1,5 |
| 刊名 | Astrophysical journal letters
 |
| 出版日期 | 2011-09-10 |
| 卷号 | 738期号:2页码:3 |
| ISSN号 | 2041-8205 |
| 关键词 | X-rays: binaries X-rays: individual (1fgl j1018.6-5856) |
| DOI | 10.1088/2041-8205/738/2/l31 |
| 通讯作者 | Li, jian() |
| 英文摘要 | The fermi large area telescope (fermi-lat) collaboration has recently reported that one of their detected sources, namely, 1fgl j1018.6-5856, is a new gamma-ray binary similar to ls 5039. this has prompted efforts to study its multi-frequency behavior. in this report, we present the results from 5.78 ms international gamma-ray astrophysics laboratory (integral) ibis/isgri observations on the source 1fgl j1018.6-5856. by combining all the available integral data, a detection is made at a significance level of 5.4 sigma in the 18-40 kev band, with an average intensity of 0.074 counts s(-1). however, we find that there is non-statistical noise in the image that effectively reduces the significance to about 4 sigma and a significant part of the signal appears to be located in a 0.2-wide phase region, at phases 0.4-0.6 (where even the corrected significance amounts to 90% of the total signal found). given the scarcity of counts, a variability is hinted at about 3 sigma at the hard x-rays, with an anticorrelation with the fermi-lat periodicity. if this behavior were true, it would be similar to that found in ls 5039 and prompt observations with tev telescopes at phases anticorrelated with the gev maximum. |
| WOS关键词 | LARGE-AREA TELESCOPE ; MISSION ; IMAGER |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000294760700015 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176169 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Li, Jian |
| 作者单位 | 1.Inst High Energy Phys, Lab Particle Astrophys, Beijing 100049, Peoples R China 2.ICREA, Barcelona, Spain 3.Inst Ciencies Espai IEEC CSIC, Barcelona 08193, Spain 4.Univ Paris Diderot, CNRS, UMR CEA DSM 7158, AIM,Irfu Serv Astrophys, F-91191 Gif Sur Yvette, France 5.Chinese Acad Sci, TPCSF, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Jian,Torres, Diego F.,Chen, Yupeng,et al. Integral observations of the gamma-ray binary 1fgl j1018.6-5856[J]. Astrophysical journal letters,2011,738(2):3. |
| APA | Li, Jian.,Torres, Diego F..,Chen, Yupeng.,Goetz, Diego.,Rea, Nanda.,...&Wang, Jianmin.(2011).Integral observations of the gamma-ray binary 1fgl j1018.6-5856.Astrophysical journal letters,738(2),3. |
| MLA | Li, Jian,et al."Integral observations of the gamma-ray binary 1fgl j1018.6-5856".Astrophysical journal letters 738.2(2011):3. |
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来源：高能物理研究所
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