Discovery of a Gamma-Ray Black Widow Pulsar by GPU-accelerated Einstein@Home
Nieder,L.1,2; Clark,C. J.3; Kandel,D.4; Romani,R. W.4; Bassa,C. G.5; Allen,B.1,2,6; Ashok,A.1,2; Cognard,I.7,8; Fehrmann,H.1,2; Freire,P.9; Karuppusamy,R.9; Kramer,M.3,9; Li,D.10,11; Machenschalk,B.1,2; Pan,Z.10; Papa,M. A.1,2,6; Ransom,S. M.12; Ray,P. S.13; Roy,J.14; Wang,P.10; Wu,J.9; Aulbert,C.1,2; Barr,E. D.9; Beheshtipour,B.1,2; Behnke,O.1,2; Bhattacharyya,B.14; Breton,R. P.3; Camilo,F.15; Choquet,C.16; Dhillon,V. S.17,18; Ferrara,E. C.19,20; Guillemot,L.7,8; Hessels,J. W. T.5,21; Kerr,M.13; Kwang,S. A.6; Marsh,T. R.22; Mickaliger,M. B.3; Pleunis,Z.23,24; Pletsch,H. J.1; Roberts,M. S. E.25,26; Sanpa-arsa,S.27; Steltner,B.1,2
Source PublicationThe Astrophysical Journal Letters
AbstractAbstract We report the discovery of 1.97 ms period gamma-ray pulsations from the 75 minute orbital-period binary pulsar now named PSR J1653?0158. The associated Fermi Large Area Telescope gamma-ray source 4FGL J1653.6?0158 has long been expected to harbor a binary millisecond pulsar. Despite the pulsar-like gamma-ray spectrum and candidate optical/X-ray associations—whose periodic brightness modulations suggested an orbit—no radio pulsations had been found in many searches. The pulsar was discovered by directly searching the gamma-ray data using the GPU-accelerated Einstein@Home distributed volunteer computing system. The multidimensional parameter space was bounded by positional and orbital constraints obtained from the optical counterpart. More sensitive analyses of archival and new radio data using knowledge of the pulsar timing solution yield very stringent upper limits on radio emission. Any radio emission is thus either exceptionally weak, or eclipsed for a large fraction of the time. The pulsar has one of the three lowest inferred surface magnetic-field strengths of any known pulsar with Bsurf?≈?4?×?107 G. The resulting mass function, combined with models of the companion star’s optical light curve and spectra, suggests a pulsar mass ?2 M⊙. The companion is lightweight with mass ~0.01 M⊙, and the orbital period is the shortest known for any rotation-powered binary pulsar. This discovery demonstrates the Fermi Large Area Telescope's potential to discover extreme pulsars that would otherwise remain undetected.
KeywordGamma-ray sources Millisecond pulsars Neutron stars Binary pulsars
WOS IDIOP:2041-8205-902-2-abbc02
PublisherThe American Astronomical Society
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Document Type期刊论文
Corresponding AuthorNieder,L.
Affiliation1.Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut), 30167 Hannover, Germany;
2.Leibniz Universit?t Hannover, 30167 Hannover, Germany
3.Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, UK
4.KIPAC/Dept. of Physics, Stanford University, Stanford, CA 94305, USA
5.ASTRON, The Netherlands Institute for Radio Astronomy, Oude Hoogeveensedijk 4, 7991 PD Dwingeloo, The Netherlands
6.Department of Physics, University of Wisconsin–Milwaukee, P.O. Box 413, Milwaukee, WI 53201, USA
7.Laboratoire de Physique et Chimie de l’Environnement et de l’Espace, Université d’Orléans/CNRS, F-45071 Orléans Cedex 02, France
8.Station de radioastronomie de Nan?ay, Observatoire de Paris, CNRS/INSU, F-18330 Nan?ay, France
9.Max-Planck-Institut für Radioastronomie, auf dem Hügel 69, 53121 Bonn, Germany
10.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China
11.NAOC-UKZN Computational Astrophysics Centre, University of KwaZulu-Natal, Durban 4000, South Africa
12.National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA, 22903, USA
13.Space Science Division, Naval Research Laboratory, Washington, DC 20375-5352, USA
14.National Centre for Radio Astrophysics, Tata Institute of Fundamental Research, Pune 411 007, India
15.South African Radio Astronomy Observatory, 2 Fir Street, Black River Park, Observatory 7925, South Africa
16.Résidence Le Dauphiné, rue Jean Bleuzen, Vanves, France
17.Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, UK
18.Instituto de Astrofísica de Canarias, E-38205 La Laguna, Tenerife, Spain
19.NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
20.Department of Astronomy, University of Maryland, College Park, MD 20742, USA
21.Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
22.Astronomy and Astrophysics Group, Department of Physics, University of Warwick, Coventry CV4 7AL, UK
23.Department of Physics, McGill University, 3600 rue University, Montréal, QC H3A 2T8, Canada
24.McGill Space Institute, McGill University, 3550 rue University, Montréal, QC H3A 2A7, Canada
25.New York University Abu Dhabi, P.O. Box 129188, Abu Dhabi, UAE
26.Eureka Scientific, Inc., 2452 Delmer Street, Suite 100, Oakland, CA 94602-3017, USA
27.National Astronomical Research Institute of Thailand (Public Organization), 260 Moo 4, T. Donkaew, A. Maerim, Chiang Mai, 50180, Thailand
Recommended Citation
GB/T 7714
Nieder,L.,Clark,C. J.,Kandel,D.,et al. Discovery of a Gamma-Ray Black Widow Pulsar by GPU-accelerated Einstein@Home[J]. The Astrophysical Journal Letters,2020,902(2).
APA Nieder,L..,Clark,C. J..,Kandel,D..,Romani,R. W..,Bassa,C. G..,...&Steltner,B..(2020).Discovery of a Gamma-Ray Black Widow Pulsar by GPU-accelerated Einstein@Home.The Astrophysical Journal Letters,902(2).
MLA Nieder,L.,et al."Discovery of a Gamma-Ray Black Widow Pulsar by GPU-accelerated Einstein@Home".The Astrophysical Journal Letters 902.2(2020).
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