H
H. J. van Langevelde
Researcher at Joint Institute for VLBI in Europe
Publications - 211
Citations - 8742
H. J. van Langevelde is an academic researcher from Joint Institute for VLBI in Europe. The author has contributed to research in topics: Maser & Very-long-baseline interferometry. The author has an hindex of 45, co-authored 194 publications receiving 6710 citations. Previous affiliations of H. J. van Langevelde include University of Illinois at Urbana–Champaign & Max Planck Society.
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Journal ArticleDOI
A direct localization of a fast radio burst and its host
Shami Chatterjee,Casey J. Law,Robert Wharton,Sarah Burke-Spolaor,Sarah Burke-Spolaor,Jason W. T. Hessels,Jason W. T. Hessels,Geoffrey C. Bower,James M. Cordes,Shriharsh P. Tendulkar,C. G. Bassa,Paul Demorest,Bryan J. Butler,Andrew Seymour,P. Scholz,Matthew W. Abruzzo,Slavko Bogdanov,V. M. Kaspi,A. Keimpema,T. J. W. Lazio,Benito Marcote,Maura McLaughlin,Zsolt Paragi,Scott M. Ransom,Michael P. Rupen,Laura Spitler,H. J. van Langevelde,H. J. van Langevelde +27 more
TL;DR: The authors' observations are inconsistent with the fast radio burst having a Galactic origin or its source being located within a prominent star-forming galaxy, and the source appears to be co-located with a low-luminosity active galactic nucleus or a previously unknown type of extragalactic source.
Journal ArticleDOI
The Host Galaxy and Redshift of the Repeating Fast Radio Burst FRB 121102
Shriharsh P. Tendulkar,C. G. Bassa,James M. Cordes,Geoffrey C. Bower,Casey J. Law,Sourav Chatterjee,Elizabeth A. K. Adams,Slavko Bogdanov,Sarah Burke-Spolaor,Sarah Burke-Spolaor,Bryan J. Butler,Paul Demorest,Jason W. T. Hessels,Jason W. T. Hessels,V. M. Kaspi,T. J. W. Lazio,Natasha Maddox,Benito Marcote,Maura McLaughlin,Zsolt Paragi,Scott M. Ransom,P. Scholz,Andrew Seymour,Laura Spitler,H. J. van Langevelde,H. J. van Langevelde,Robert Wharton +26 more
TL;DR: In this article, the precise localization of the repeating fast radio burst (FRB 121102) has provided the first unambiguous association (chance coincidence probability p ≲ 3 × 10−4) of an optical and persistent radio counterpart.
Journal ArticleDOI
First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way
Kazunori Akiyama,A. Alberti,Walter Alef,Juan-Carlos Algaba,Richard Anantua,Keiichi Asada,Rebecca Azulay,Uwe Bach,A-K. Baczko,David Ball,Mislav Baloković,John E. Barrett,M. Bauböck,Bradford Benson,Dan Bintley,Lindy Blackburn,Ray Blundell,Katherine L. Bouman,Geoffrey C. Bower,Hope Boyce,Michael Kremer,Christiaan D. Brinkerink,Roger Brissenden,Silke Britzen,Avery E. Broderick,Dominique Broguiere,Thomas Bronzwaer,Sandra Bustamante,Do-Young Byun,John E. Carlstrom,Chiara Ceccobello,Andrew Chael,Chi-kwan Chan,Koushik Chatterjee,Shami Chatterjee,Ming-Tang Chen,Y. Chen 陈,Xiaopeng Cheng,Ilje Cho,Pierre Christian,Nicholas S. Conroy,John Conway,James M. Cordes,T. M. Crawford,Geoffrey B. Crew,Alejandro Cruz-Osorio,Y. Cui 崔,Jordy Davelaar,M. De Laurentis,Roger Deane,Jessica Dempsey,Gregory Desvignes,Jason Dexter,Vedant Dhruv,Sheperd S. Doeleman,Shawn M. Dougal,Sergio A. Dzib,R. P. Eatough,Razieh Emami,Heino Falcke,Joseph R. Farah,Vincent L. Fish,Ed Fomalont,H. A. Ford,Raquel Fraga-Encinas,William T. Freeman,Per Friberg,Christian M. Fromm,Antonio Fuentes,Peter Galison,Charles F. Gammie,R. García,Olivier Gentaz,Boris Georgiev,Ciriaco Goddi,Roman Gold,Arturo I. Gómez-Ruiz,José L. Gómez,M. Gu 顾,Mark Gurwell,Kazuhiro Hada,Daryl Haggard,Kari Haworth,Michael Pecht,Ronald Hesper,D. Heumann,L. Ho 何,Paul T. P. Ho,Mareki Honma,Chih-Wei Locutus Huang,L. Huang 黄,David H. Hughes,Shiro Ikeda,Caterina M. V. Impellizzeri,Makoto Inoue,Sara Issaoun,David J. James,Buell T. Jannuzi,Michael Janssen,Britton Jeter,Wu 悟 Jiang 江,A. Jiménez-Rosales,Michael D. Johnson,Svetlana G. Jorstad,Abhishek V. Joshi,Taehyun Jung,Mansour Karami,Ramesh Karuppusamy,Tomohisa Kawashima,Garrett K. Keating,Mark Kettenis,Dong-Jin Kim,Jae-Young Kim,Jongsoo Kim,Junhan Kim,Motoki Kino,Jun Yi Koay,Prashant Kocherlakota,Yutaro Kofuji,Patrick M. Koch,Shoko Koyama,Carsten Kramer,Michael Kramer,Thomas P. Krichbaum,C. Y. Kuo,N Bella,Tod R. Lauer,Daeyoung Lee,Sang-Sung Lee,Po Kin Leung,Aviad Levis,Z. Li 李,Rocco Lico,Greg Lindahl,Michael Lindqvist,Mikhail M. Lisakov,J. Liu 刘,Kuo Liu,Elisabetta Liuzzo,W. Lo,Andrei Lobanov,Laurent Loinard,C. Lonsdale,R. Lu 路,J. Mao 毛,Nicola Marchili,Sera Markoff,Daniel P. Marrone,Alan P. Marscher,Ivan Marti-Vidal,Satoki Matsushita,Lynn D. Matthews,Lia Medeiros,Karl M. Menten,Daniel Michalik,Izumi Mizuno,Yosuke Mizuno,James M. Moran,Kotaro Moriyama,Monika Moscibrodzka,Cornelia Müller,Alejandro Mus,Gibwa Musoke,Ioannis Myserlis,A. Nadolski,Hiroshi Nagai,Neil M. Nagar,Masanori Nakamura,Ramesh Narayan,Gopal Narayanan,Iniyan Natarajan,Antonios Nathanail,Santiago Navarro Fuentes,Joseph Neilsen,R. Neri,Chunchong Ni,A. Noutsos,Michael A. Nowak,Junghwan Oh,Hiroki Okino,Hector Olivares,Gisela N. Ortiz-León,Tomoaki Oyama,Feryal Özel,Daniel C. M. Palumbo,G. F. Paraschos,Jong-Ho Park,Harriet Parsons,Nimesh A. Patel,Ue Li Pen,Dominic W. Pesce,Vincent Piétu,Richard L. Plambeck,Aleksandar Popstefanija,Oliver Porth,Felix M. Pötzl,Ben Prather,Jorge A. Preciado-López,Dimitrios Psaltis,Hung-Yi Pu,Venkatessh Ramakrishnan,Ramprasad Rao,Mark G. Rawlings,Alexander W. Raymond,Luciano Rezzolla,Angelo Ricarte,Bart Ripperda,Freek Roelofs,Alan E. E. Rogers,E. Ros,C. Romero-Canizales,Arash Roshanineshat,Helge Rottmann,Alan L. Roy,Ignacio Ruiz,Chet Ruszczyk,Kazi L.J. Rygl,S. Sánchez,D. Sánchez-Argüelles,M. Sánchez-Portal,Mahito Sasada,Kaushik Satapathy,Tuomas Savolainen,F. Peter Schloerb,Jonathan F. Schonfeld,Karl Schuster,Lijing Shao,Z. Shen 沈,Des Small,Bong Won Sohn,Jason SooHoo,Kamal Souccar,H. Sun 孙,Fumie Tazaki,Alexandra J. Tetarenko,Paul Tiede,Remo P. J. Tilanus,Michael Titus,Pablo Torne,Efthalia Traianou,Tyler Trent,Sascha Trippe,Matthew Turk,I. van Bemmel,H. J. van Langevelde,Daniel R. van Rossum,J. Vos,Jan Wagner,Derek Ward-Thompson,John F. C. Wardle,Jonathan Weintroub,Norbert Wex,Robert Wharton,Maciek Wielgus,Kaj Wiik,Gunther Witzel,Michael F. Wondrak,George N. Wong,Q. Wu 吴,Paul Yamaguchi,Doosoo Yoon,André Young,Ken H. Young,Ziri Younsi,F. Yuan 袁,Y. Yuan 袁,J. A. Zensus,Shuo Zhang,Guang-Yao Zhao,Shan-Shan 杉杉 Zhao 赵,C. Agurto,Alex Allardi,Rodrigo Amestica,Juan-Pablo Araneda,O. Arriagada,Jennie L. Berghuis,Alessandra Bertarini,Ryan Berthold,J. Blanchard,Kent Masterson Brown,Mauricio Ruiz Cárdenas,Michael Cantzler,P.E. Caro,E. Castillo-Domínguez,Tin-Lok Chan,Chih Cheng Chang,Dominic O. Chang,Shu Hao Chang,Song Chu Chang,Chung Chen Chen,Ryan Chilson,Timothy C. Chuter,M. Ciechanowicz,E. Colin-Beltran,Iain Coulson,Joseph Crowley,Nathalie Degenaar,Sven Dornbusch,C. Duran,A. Everett,Aaron Faber,Karl Forster,Miriam Fuchs,David M. Gale,Gertie Geertsema,E. Gonzalez,Dave Graham,Frederic Gueth,N. W. Halverson,Chi-Chiang Han,Kuo Chang Han,Yutaka Hasegawa,Jose L. Hernandez-Rebollar,C. Herrera,Rubén Herrero-Illana,Stefan Heyminck,Akihiko Hirota,James Hoge,Shelbi R. Hostler Schimpf,Ryan Howie,Yau De Huang,Homin Jiang,Hao Jinchi,D. John,Kimihiro Kimura,T. Klein,Derek Kubo,John Kuroda,Caleb Kwon,Richard Lacasse,Robert Laing,E. M. Leitch,Chaofang Li,Ching Tang Liu,Kuan-Yu Liu,Lupin C.C. Lin,Li-Ming Lu,F. Mac-Auliffe,Pierre Martin-Cocher,Callie Matulonis,John K. Maute,Hugo Messias,Zheng Meyer-Zhao,A. Montaña,F. M. Montenegro-Montes,William Montgomerie,Marcos Emir Moreno Nolasco,Dirk Muders,Hiroaki Nishioka,Timothy Norton,George Nystrom,Hideo Ogawa,Rodrigo Olivares,Peter Oshiro,J. P. Pérez-Beaupuits,Rodrigo Parra,N. Phillips,M. Poirier,Nicolas Pradel,Richard L.J. Qiu,Philippe Raffin,Alexandra S. Rahlin,Jorge Antonio Vélez Ramírez,Sean M. Ressler,P. T. Reynolds,Iván Rodríguez-Montoya,Alejandro F. Sáez-Madain,J. Santana,Paul Shaw,Leslie E. Shirkey,Kevin Silva,William Snow,Don Sousa,T. K. Sridharan,William Stahm,Antony A. Stark,John Test,K. Torstensson,P. Venegas,Craig Walther,Ta Shun Wei,Christopher J. White,G. Wieching,Rudy Wijnands,J. G. A. Wouterloot,Chen Yu Yu,Wei Yu (于威),M. Zeballos +387 more
TL;DR: The first Event Horizon Telescope (EHT) observations of Sagittarius A* (Sgr A*), the Galactic center source associated with a supermassive black hole, were conducted in 2017 using a global interferometric array of eight telescopes operating at a wavelength of 1.3 mm as mentioned in this paper .
Journal ArticleDOI
The Repeating Fast Radio Burst FRB 121102 as Seen on Milliarcsecond Angular Scales
Benito Marcote,Zsolt Paragi,Jason W. T. Hessels,Jason W. T. Hessels,A. Keimpema,H. J. van Langevelde,H. J. van Langevelde,Y. Huang,Y. Huang,Cees Bassa,Slavko Bogdanov,Geoffrey C. Bower,Sarah Burke-Spolaor,Sarah Burke-Spolaor,Bryan J. Butler,Robert M. Campbell,Shami Chatterjee,James M. Cordes,Paul Demorest,M. A. Garrett,M. A. Garrett,M. A. Garrett,Tapasi Ghosh,Victoria M. Kaspi,Casey J. Law,T. J. W. Lazio,Maura McLaughlin,Scott M. Ransom,Christopher J. Salter,P. Scholz,A. Seymour,Andrew Siemion,Andrew Siemion,Andrew Siemion,Laura Spitler,Shriharsh P. Tendulkar,Robert Wharton +36 more
TL;DR: In this paper, the authors show that a burst source associated with a low-luminosity active galactic nucleus or a young neutron star energizing a supernova remnant are the two scenarios for FRB 121102 that best match the observed data.
Journal ArticleDOI
Parallaxes and proper motions of interstellar masers toward the Cygnus X star-forming complex. I. Membership of the Cygnus X region
Kazi L.J. Rygl,Kazi L.J. Rygl,Andreas Brunthaler,Andreas Brunthaler,Alberto Sanna,Karl M. Menten,Mark J. Reid,H. J. van Langevelde,H. J. van Langevelde,Mareki Honma,K. Torstensson,K. Torstensson,Kenta Fujisawa +12 more
TL;DR: In this paper, the authors measured the trigonometric parallaxes and proper motions of five massive star-forming regions toward the Cygnus X complex and reported the following distances within a 10% accuracy: 1.30+0.12 −0.11 -0.