A broad-band radio study of PSR J0250+5854: the slowest spinning radio pulsar known

doi:10.1093/mnras/stab2496

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	A broad-band radio study of PSR J0250+5854: the slowest spinning radio pulsar known
	Agar, C. H.1; Weltevrede, P.1; Bondonneau, L.2,3; Griessmeier, J-M 2,4; Hessels, J. W. T.5,6; Huang, W. J.7,8,9; Karastergiou, A.10; Keith, M. J.1; Kondratiev, V., I 5,11; Kuensemoeller, J.12
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2021-11-01
卷号	508 期号:1 页码:1102-1114
关键词	polarization stars: magnetars stars: neutron pulsars: individual: PSR J0250+5854
ISSN号	0035-8711
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.
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关键词	ISOLATED NEUTRON-STARS ; EMPIRICAL-THEORY ; SPECTRAL INDEX ; CONTINUUM EMISSION ; MAGNETIC-FIELDS ; WIDE-BAND ; MODEL ; POLARIZATION ; FREQUENCY ; GEOMETRY
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')
内容类型	期刊论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/4482]
专题	研究单元未命名
通讯作者	Agar, C. H.
作者单位	1.Univ Manchester, Jodrell Bank Ctr Astrophys, Sch Phys & Astron, Manchester M13 9PL, Lancs, England 2.Univ Orleans, Lab Phys & Chim Environm & Espace LPC2E, CNRS, F-45071 Orleans, France 3.SU UP UO, Observ Paris, PSL, LESIA,CNRS, F-92195 Meudon, France 4.Univ Orleans, PSL Res Univ, Observ Paris, OSUC,Stn Radioastron Nancay,CNRS, F-18330 Nancay, France 5.ASTRON, Netherlands Inst Radio Astron, Oude Hoogeveensedijk 4, NL-7991 PD Dwingeloo, Netherlands 6.Univ Amsterdam, Anton Pannekoek Inst Astron, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands 7.Guangzhou Univ, Sch Phys & Mat Sci, Dept Astron, Guangzhou 510006, Peoples R China 8.Dept Educ Guangdong Prov, Astron Sci & Technol Res Lab, Guangzhou 510006, Peoples R China 9.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China 10.Univ Oxford, Dept Phys, Astrophys, Denys Wilkinson Bldg,Keble Rd, Oxford OX1 3RH, England
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.