On the FRB luminosity function - -II. Event rate density
文献类型：期刊论文
| 作者 | Luo, Rui1,2,3; Men, Yunpeng1,2; Lee, Kejia1,4; Wang, Weiyang5,6; Lorimer, D. R.7,8; Zhang, Bing9 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2020-05-01 |
| 卷号 | 494期号:1页码:665-679 |
| ISSN号 | 0035-8711 |
| 关键词 | methods: data analysis methods: statistical stars: luminosity function, mass function |
| DOI | 10.1093/mnras/staa704 |
| 英文摘要 | The luminosity function of Fast Radio Bursts (FRBs), defined as the event rate per unit cosmic co-moving volume per unit luminosity, may help to reveal the possible origins of FRBs and design the optimal searching strategy. With the Bayesian modelling, we measure the FRB luminosity function using 46 known FRBs. Our Bayesian framework self-consistently models the selection effects, including the survey sensitivity, the telescope beam response, and the electron distributions from Milky Way/ the host galaxy/ local environment of FRBs. Different from the previous companion paper, we pay attention to the FRB event rate density and model the event counts of FRB surveys based on the Poisson statistics. Assuming a Schechter luminosity function form, we infer (at the 95 per cent confidence level) that the characteristic FRB event rate density at the upper cut-off luminosity L* = 2.9(-1.7)(+11.9) x 10(44) erg s(-1 )is phi* = 339(-313)(+1074) Gpc(-3) yr(-1), the power-law index is alpha = -1.79(-0.35)(+0.31), and the lower cut-off luminosity is L-0 <= 9.1 x 10(41) erg s(-1). The event rate density of FRBs is found to be 3.5(-2.4)(+5.7 )x 10(4 )Gpc(-3) yr(-1) above 10(42) erg s(-1), 5.0(-2.3)(+3.2) x 10(3) Gpc(-3) yr(-1) above 10(43 )erg s(-1), and 3.7(-2.0)(+3.5) x 10(2) Gpc(-3) yr(-1) above 10(44) erg s(-1). As a result, we find that, for searches conducted at 1.4 GHz, the optimal diameter of single-dish radio telescopes to detect FRBs is 30-40 m. The possible astrophysical implications of the measured event rate density are also discussed in the current paper. |
| WOS关键词 | FAST RADIO-BURSTS ; GAMMA-RAY BURSTS ; OBSERVATORY SUPERNOVA SEARCH ; EXTENDED EMISSION ; DISTRIBUTIONS ; POPULATION ; GALAXY ; LIMITS |
| 资助项目 | NSFC[U15311243] ; NSFC[XDB23010200] ; NSFC[2017YFA0402600] ; NSFC[11633004] ; NSFC[NSFC 11473044] ; NSFC[11653003] ; TianShanChuangXinTuanDui ; Max-Planck Partner Group ; MoST grant[2016YFE0100300] ; CAS[QYZDJ-SSW-SLH017] ; CAS[CAS XDB 23040100] ; National Science Foundation[AST1516958] ; National Science Foundation[OIA-1458952] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | OXFORD UNIV PRESS |
| WOS记录号 | WOS:000535885900050 |
| 资助机构 | NSFC ; NSFC ; TianShanChuangXinTuanDui ; TianShanChuangXinTuanDui ; Max-Planck Partner Group ; Max-Planck Partner Group ; MoST grant ; MoST grant ; CAS ; CAS ; National Science Foundation ; National Science Foundation ; NSFC ; NSFC ; TianShanChuangXinTuanDui ; TianShanChuangXinTuanDui ; Max-Planck Partner Group ; Max-Planck Partner Group ; MoST grant ; MoST grant ; CAS ; CAS ; National Science Foundation ; National Science Foundation ; NSFC ; NSFC ; TianShanChuangXinTuanDui ; TianShanChuangXinTuanDui ; Max-Planck Partner Group ; Max-Planck Partner Group ; MoST grant ; MoST grant ; CAS ; CAS ; National Science Foundation ; National Science Foundation ; NSFC ; NSFC ; TianShanChuangXinTuanDui ; TianShanChuangXinTuanDui ; Max-Planck Partner Group ; Max-Planck Partner Group ; MoST grant ; MoST grant ; CAS ; CAS ; National Science Foundation ; National Science Foundation |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/54846]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Luo, Rui; Lee, Kejia |
| 作者单位 | 1.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China 2.Peking Univ, Sch Phys, Dept Astron, Beijing 100871, Peoples R China 3.Australia Telescope Natl Facil, CSIRO Astron & Space Sci, Box 76, Epping, NSW 1710, Australia 4.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 5.Chinese Acad Sci, Natl Astron Observ, Key Lab Computat Astrophys, 20A Datun Rd, Beijing 100012, Peoples R China 6.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 7.West Virginia Univ, Dept Phys & Astron, Morgantown, WV 26506 USA 8.West Virginia Univ, Ctr Gravitat Waves & Cosmol, Chestnut Ridge Res Bldg, Morgantown, WV 26505 USA 9.Univ Nevada, Dept Phys & Astron, Las Vegas, NV 89154 USA |
| 推荐引用方式 GB/T 7714 | Luo, Rui,Men, Yunpeng,Lee, Kejia,et al. On the FRB luminosity function - -II. Event rate density[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2020,494(1):665-679. |
| APA | Luo, Rui,Men, Yunpeng,Lee, Kejia,Wang, Weiyang,Lorimer, D. R.,&Zhang, Bing.(2020).On the FRB luminosity function - -II. Event rate density.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,494(1),665-679. |
| MLA | Luo, Rui,et al."On the FRB luminosity function - -II. Event rate density".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 494.1(2020):665-679. |
入库方式： OAI收割
来源：国家天文台
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