A broad-band radio study of PSR J0250+5854: the slowest spinning radio pulsar known
文献类型：期刊论文
| 作者 | Agar, C. H.21; Weltevrede, P.21; Bondonneau, L.19,20; Griessmeier, J-M18,20; Hessels, J. W. T.16,17; Huang, W. J.13,14,15; Karastergiou, A.12; Keith, M. J.21; Kondratiev, V., I11,17; Kuensemoeller, J.10 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2021-11-01 |
| 卷号 | 508期号:1页码:1102-1114 |
| ISSN号 | 0035-8711 |
| 关键词 | polarization stars: magnetars stars: neutron pulsars: individual: PSR J0250+5854 |
| DOI | 10.1093/mnras/stab2496 |
| 通讯作者 | Agar, C. H.(spinagar.work@gmail.com) |
| 英文摘要 | We present radio observations of the most slowly rotating known radio pulsar PSR J0250+5854. With a 23.5-s period, it is close, or even beyond, the P-(P)over dot diagram region thought to be occupied by active pulsars. The simultaneous observations with the Five-hundred-metre Aperture Spherical radio Telescope (FAST), the Chilbolton and Effelsberg Low Frequency Array (LOFAR) international stations, and New Extension in Nangay Upgrading loFAR (NenuFAR) represent a five-fold increase in the spectral coverage of this object, with the detections at 1250 (FAST) and 57 MHz (NenuFAR) being the highest and lowest frequency published, respectively, to date. We measure a flux density of 4 +/- 2 mu Jy at 1250 MHz and an exceptionally steep spectral index of -3.5(-1.5)(+0.2), with a turnover below similar to 95MHz. In conjunction with observations of this pulsar with the Green Bank Telescope and the LOFAR Core, we show that the intrinsic profile width increases drastically towards higher frequencies, contrary to the predictions of conventional radius-to-frequency mapping. We examine polarimetric data from FAST and the LOFAR Core and conclude that its polar cap radio emission is produced at an absolute height of several hundreds of kilometres around 1.5 GHz, similar to other rotation-powered pulsars across the population. Its beam is significantly underfilled at lower frequencies, or it narrows because of the disappearance of conal outriders. Finally, the results for PSR J0250+5854 and other slowly spinning rotation-powered pulsars are contrasted with the radio-detected magnetars. We conclude that magnetars have intrinsically wider radio beams than the slow rotation-powered pulsars, and that consequently the latter's lower beaming fraction is what makes objects such as PSR J0250+5854 so scarce. |
| WOS关键词 | ISOLATED NEUTRON-STARS ; EMPIRICAL-THEORY ; SPECTRAL INDEX ; CONTINUUM EMISSION ; MAGNETIC-FIELDS ; WIDE-BAND ; MODEL ; POLARIZATION ; FREQUENCY ; GEOMETRY |
| 资助项目 | National Aeronautics and Space Administration ; UK Science and Technology Facilities Council (STFC) ; National Natural Science Foundation of China (NSFC)[11988101] ; National Natural Science Foundation of China (NSFC)[U1938117] ; National Natural Science Foundation of China (NSFC)[U1731238] ; National Natural Science Foundation of China (NSFC)[11703003] ; Max-PlanckGesellschaft ; Max-Planck-Institut fur Radioastronomie ; Forschungszentrum Julich, Bielefeld University ; Federal Ministry of Education and Research (BMBF) Verbundforschung project D-LOFAR III[05A14PBA] ; state of Nordrhein-Westfalen ; state of Hamburg ; Station de Radioastronomie de Nancay ; Centre national de la recherche scientifique -Institut national des sciences de l'Univers (CNRS-INSU) ; Observatoire de Paris-PSL ; Universite d'Orleans ; Observatoire des Sciences de l'Univers en region Centre ; Region Centre-Val de Loire ; Domaine d'Interet Majeur Astrophysique et conditions d'apparition de la vie' (DIMACAV) ; DIM-ACAV+ of R egion Ile de France ; Agence Nationale de la Recherche ; Region Centre Val de Loire, departement du Cher ; CNRSINSU ; Observatoire de Paris ; Universite d'Orleans, France ; BMBF ; Ministry of Innovation, Science and Research of the German State of North Rhine-Westphalia (MIWF-NRW) ; MaxPlanck-Gesellschaft zur Forderung derWissenschaften e. V. (MPG), Germany ; Science Foundation Ireland (SFI), Ireland ; Department of Business, Enterprise and Innovation (DBEI), Ireland ; Dutch Research Council (Nederlandse Organisatie voor Wetenschappelijk Onderzoek; NWO), the Netherlands ; The Science and Technology Facilities Council, UK ; NWO Vici grant ('AstroFlash') |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | OXFORD UNIV PRESS |
| WOS记录号 | WOS:000741285400039 |
| 资助机构 | National Aeronautics and Space Administration ; UK Science and Technology Facilities Council (STFC) ; National Natural Science Foundation of China (NSFC) ; Max-PlanckGesellschaft ; Max-Planck-Institut fur Radioastronomie ; Forschungszentrum Julich, Bielefeld University ; Federal Ministry of Education and Research (BMBF) Verbundforschung project D-LOFAR III ; state of Nordrhein-Westfalen ; state of Hamburg ; Station de Radioastronomie de Nancay ; Centre national de la recherche scientifique -Institut national des sciences de l'Univers (CNRS-INSU) ; Observatoire de Paris-PSL ; Universite d'Orleans ; Observatoire des Sciences de l'Univers en region Centre ; Region Centre-Val de Loire ; Domaine d'Interet Majeur Astrophysique et conditions d'apparition de la vie' (DIMACAV) ; DIM-ACAV+ of R egion Ile de France ; Agence Nationale de la Recherche ; Region Centre Val de Loire, departement du Cher ; CNRSINSU ; Observatoire de Paris ; Universite d'Orleans, France ; BMBF ; Ministry of Innovation, Science and Research of the German State of North Rhine-Westphalia (MIWF-NRW) ; MaxPlanck-Gesellschaft zur Forderung derWissenschaften e. V. (MPG), Germany ; Science Foundation Ireland (SFI), Ireland ; Department of Business, Enterprise and Innovation (DBEI), Ireland ; Dutch Research Council (Nederlandse Organisatie voor Wetenschappelijk Onderzoek; NWO), the Netherlands ; The Science and Technology Facilities Council, UK ; NWO Vici grant ('AstroFlash') |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/4482]  |
| 专题 | 科研仪器设备产出_我台利用FAST观测数据文章 |
| 通讯作者 | Agar, C. H. |
| 作者单位 | 1.Univ Paris, Sorbonne Univ, 5 Pl Jules Janssen, F-92195 Meudon, France 2.Univ Paris, Univ Paris Saclay, CNRS, CEA,AIM, F-91191 Gif Sur Yvette, France 3.Univ Paris, Univ PSL, Observ Paris, Lab Univers & Theories,CNRS, F-92190 Meudon, France 4.McGill Univ, McGill Space Inst, 3550 Rue Univ, Montreal, PQ H3A 2A7, Canada 5.McGill Univ, Dept Phys, 3600 Rue Univ, Montreal, PQ H3A 2T8, Canada 6.CSIRO Astron & Space Sci, POB 1130, Bentley, WA 6102, Australia 7.Univ KwaZulu Natal, NAOC UKZN Computat Astrophys Ctr, ZA-4000 Durban, South Africa 8.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 9.Chinese Acad Sci, Natl Astron Observ, CAS Key Lab FAST, Beijing 100101, Peoples R China 10.Univ Bielefeld, Fak Phys, Postfach 100131, D-33501 Bielefeld, Germany |
| 推荐引用方式 GB/T 7714 | Agar, C. H.,Weltevrede, P.,Bondonneau, L.,et al. A broad-band radio study of PSR J0250+5854: the slowest spinning radio pulsar known[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,508(1):1102-1114. |
| APA | Agar, C. H..,Weltevrede, P..,Bondonneau, L..,Griessmeier, J-M.,Hessels, J. W. T..,...&Zarka, P..(2021).A broad-band radio study of PSR J0250+5854: the slowest spinning radio pulsar known.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,508(1),1102-1114. |
| MLA | Agar, C. H.,et al."A broad-band radio study of PSR J0250+5854: the slowest spinning radio pulsar known".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 508.1(2021):1102-1114. |
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