R
Roger J. Cappallo
Researcher at Massachusetts Institute of Technology
Publications - 161
Citations - 16173
Roger J. Cappallo is an academic researcher from Massachusetts Institute of Technology. The author has contributed to research in topics: Murchison Widefield Array & Very-long-baseline interferometry. The author has an hindex of 54, co-authored 159 publications receiving 13335 citations. Previous affiliations of Roger J. Cappallo include Max Planck Society & University of Sydney.
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Journal ArticleDOI
First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
Kazunori Akiyama,Antxon Alberdi,Walter Alef,Keiichi Asada,Rebecca Azulay,Rebecca Azulay,Anne Kathrin Baczko,David Ball,Mislav Baloković,John E. Barrett,Dan Bintley,Lindy Blackburn,W. Boland,Katherine L. Bouman,Katherine L. Bouman,Geoffrey C. Bower,Michael Bremer,Christiaan D. Brinkerink,Roger Brissenden,Silke Britzen,Avery E. Broderick,Avery E. Broderick,Dominique Broguiere,Thomas Bronzwaer,Do-Young Byun,John E. Carlstrom,Andrew Chael,Chi-kwan Chan,Shami Chatterjee,Koushik Chatterjee,Ming-Tang Chen,Yi Chen,Yi Chen,Ilje Cho,Pierre Christian,Pierre Christian,John Conway,James M. Cordes,Geoffrey B. Crew,Yuzhu Cui,Yuzhu Cui,Jordy Davelaar,Mariafelicia De Laurentis,Mariafelicia De Laurentis,Roger Deane,Roger Deane,Jessica Dempsey,Gregory Desvignes,Jason Dexter,Sheperd S. Doeleman,R. P. Eatough,Heino Falcke,Vincent L. Fish,Ed Fomalont,Raquel Fraga-Encinas,William T. Freeman,Per Friberg,Christian M. Fromm,José L. Gómez,Peter Galison,Charles F. Gammie,Roberto Garcia,Olivier Gentaz,Boris Georgiev,Ciriaco Goddi,Ciriaco Goddi,Roman Gold,Minfeng Gu,Minfeng Gu,Mark Gurwell,Kazuhiro Hada,Kazuhiro Hada,Michael H. Hecht,Ronald Hesper,Luis C. Ho,Paul T. P. Ho,Mareki Honma,Mareki Honma,Chih-Wei Locutus Huang,Lei Huang,Lei Huang,David H. Hughes,Shiro Ikeda,Makoto Inoue,Sara Issaoun,David J. James,Buell T. Jannuzi,Michael Janssen,Britton Jeter,Wu Jiang,Michael D. Johnson,Svetlana G. Jorstad,Svetlana G. Jorstad,Taehyun Jung,Mansour Karami,Mansour Karami,Ramesh Karuppusamy,Tomohisa Kawashima,Garrett K. Keating,Mark Kettenis,Jae-Young Kim,Junhan Kim,Jongsoo Kim,Motoki Kino,Motoki Kino,Jun Yi Koay,Patrick M. Koch,Shoko Koyama,Michael Kramer,Carsten Kramer,Thomas P. Krichbaum,C. Y. Kuo,Tod R. Lauer,Sang-Sung Lee,Yan-Rong Li,Zhiyuan Li,Michael Lindqvist,Kuo Liu,Elisabetta Liuzzo,Wen Ping Lo,Wen Ping Lo,Andrei P. Lobanov,Laurent Loinard,Colin J. Lonsdale,Ru-Sen Lu,Ru-Sen Lu,Nicholas R. MacDonald,Jirong Mao,Sera Markoff,Daniel P. Marrone,Alan P. Marscher,Ivan Marti-Vidal,Satoki Matsushita,Lynn D. Matthews,Lia Medeiros,Lia Medeiros,Karl M. Menten,Yosuke Mizuno,Izumi Mizuno,James M. Moran,Kotaro Moriyama,Kotaro Moriyama,Monika Moscibrodzka,Cornelia Müller,Cornelia Müller,Hiroshi Nagai,Hiroshi Nagai,Neil M. Nagar,Masanori Nakamura,Ramesh Narayan,Gopal Narayanan,Iniyan Natarajan,Roberto Neri,Chunchong Ni,Aristeidis Noutsos,Hiroki Okino,Hiroki Okino,Hector Olivares,Gisela N. Ortiz-León,Tomoaki Oyama,Feryal Özel,Daniel C. M. Palumbo,Nimesh A. Patel,Ue-Li Pen,Ue-Li Pen,Ue-Li Pen,Dominic W. Pesce,Vincent Piétu,Richard L. Plambeck,Aleksandar Popstefanija,Oliver Porth,Oliver Porth,Ben Prather,Jorge A. Preciado-López,Dimitrios Psaltis,Hung Yi Pu,Venkatessh Ramakrishnan,Ramprasad Rao,Mark G. Rawlings,Alexander W. Raymond,Luciano Rezzolla,Bart Ripperda,Freek Roelofs,Alan E. E. Rogers,Eduardo Ros,Mel Rose,Arash Roshanineshat,Helge Rottmann,Alan L. Roy,Chet Ruszczyk,Benjamin R. Ryan,Kazi L.J. Rygl,S. Sánchez,David Sánchez-Arguelles,David Sánchez-Arguelles,Mahito Sasada,Mahito Sasada,Tuomas Savolainen,Tuomas Savolainen,F. Peter Schloerb,Karl Friedrich Schuster,Lijing Shao,Lijing Shao,Zhiqiang Shen,Zhiqiang Shen,Des Small,Bong Won Sohn,Bong Won Sohn,Jason SooHoo,Fumie Tazaki,Paul Tiede,Remo P. J. Tilanus,Remo P. J. Tilanus,Michael Titus,Kenji Toma,Pablo Torne,Tyler Trent,Sascha Trippe,Shuichiro Tsuda,Ilse van Bemmel,Huib Jan van Langevelde,Huib Jan van Langevelde,Daniel R. van Rossum,Jan Wagner,John Wardle,Jonathan Weintroub,Norbert Wex,Robert Wharton,Maciek Wielgus,George N. Wong,Qingwen Wu,Ken H. Young,André Young,Ziri Younsi,Ziri Younsi,Feng Yuan,Feng Yuan,Ye-Fei Yuan,J. Anton Zensus,Guang-Yao Zhao,Shan Shan Zhao,Shan Shan Zhao,Ziyan Zhu,Juan-Carlos Algaba,Juan-Carlos Algaba,Alexander Allardi,Rodrigo Amestica,Jadyn Anczarski,Uwe Bach,Frederick K. Baganoff,Christopher Beaudoin,Bradford Benson,Ryan Berthold,J. Blanchard,J. Blanchard,Ray Blundell,Sandra Bustamente,Roger J. Cappallo,E. Castillo-Domínguez,E. Castillo-Domínguez,Chih Cheng Chang,Chih Cheng Chang,Shu Hao Chang,Song Chu Chang,Chung Chen Chen,Ryan Chilson,Timothy C. Chuter,Rodrigo Córdova Rosado,Iain Coulson,T. M. Crawford,Joseph Crowley,John David,Mark Derome,Matthew R. Dexter,Sven Dornbusch,Kevin A. Dudevoir,S. A. Dzib,Andreas Eckart,Andreas Eckart,Chris Eckert,Neal R. Erickson,W. B. Everett,Aaron Faber,Joseph R. Farah,Joseph R. Farah,Vernon Fath,Thomas W. Folkers,David C. Forbes,Robert Freund,Arturo I. Gómez-Ruiz,Arturo I. Gómez-Ruiz,David M. Gale,Feng Gao,Feng Gao,Gertie Geertsema,D. A. Graham,Christopher Greer,Ronald Grosslein,Frederic Gueth,Daryl Haggard,Daryl Haggard,N. W. Halverson,Chih Chiang Han,Kuo Chang Han,Jinchi Hao,Yutaka Hasegawa,Jason W. Henning,Jason W. Henning,Antonio Hernández-Gómez,Antonio Hernández-Gómez,Rubén Herrero-Illana,Stefan Heyminck,Akihiko Hirota,Akihiko Hirota,James Hoge,Yau De Huang,C. M. Violette Impellizzeri,C. M. Violette Impellizzeri,Homin Jiang,Atish Kamble,Ryan Keisler,Kimihiro Kimura,Yusuke Kono,Derek Kubo,John Kuroda,Richard Lacasse,R. Laing,Erik M. Leitch,Chao-Te Li,Lupin C.C. Lin,Lupin C.C. Lin,Ching Tang Liu,Kuan Yu Liu,Li Ming Lu,Ralph G. Marson,Pierre Martin-Cocher,Kyle D. Massingill,Callie Matulonis,Martin P. McColl,Stephen R. McWhirter,Hugo Messias,Hugo Messias,Zheng Meyer-Zhao,Zheng Meyer-Zhao,Daniel Michalik,A. Montaña,A. Montaña,William Montgomerie,M. Mora-Klein,Dirk Muders,A. Nadolski,S. Navarro,Joseph Neilsen,Chi H. Nguyen,Chi H. Nguyen,Hiroaki Nishioka,Timothy Norton,Michael A. Nowak,George Nystrom,Hideo Ogawa,Peter Oshiro,Harriet Parsons,Scott Paine,J. Peñalver,N. Phillips,N. Phillips,M. Poirier,Nicolas Pradel,Rurik A. Primiani,Philippe Raffin,Alexandra S. Rahlin,Alexandra S. Rahlin,George Reiland,Christopher Risacher,Ignacio Ruiz,Alejandro F. Sáez-Madain,Alejandro F. Sáez-Madain,Remi Sassella,Pim Schellart,Pim Schellart,Paul Shaw,Kevin M. Silva,Hotaka Shiokawa,David R. Smith,William Snow,Kamal Souccar,Don Sousa,Tirupati K. Sridharan,Ranjani Srinivasan,William Stahm,A. A. Stark,K. T. Story,Sjoerd T. Timmer,Laura Vertatschitsch,Craig Walther,Ta Shun Wei,Nathan Whitehorn,Alan R. Whitney,David P. Woody,J. G. A. Wouterloot,M. C. H. Wright,Paul Yamaguchi,Chen Yu Yu,M. Zeballos,M. Zeballos,Shuo Zhang,Lucy M. Ziurys +406 more
TL;DR: In this article, the Event Horizon Telescope was used to reconstruct event-horizon-scale images of the supermassive black hole candidate in the center of the giant elliptical galaxy M87.
Journal ArticleDOI
The Murchison widefield array: The square kilometre array precursor at low radio frequencies
Steven Tingay,Robert F. Goeke,Judd D. Bowman,David Emrich,Stephen M. Ord,Daniel A. Mitchell,Miguel F. Morales,T. Booler,Brian Crosse,Randall B. Wayth,Colin J. Lonsdale,S. E. Tremblay,D. Pallot,T. Colegate,Andreas Wicenec,Nadia Kudryavtseva,W. Arcus,David G. Barnes,Gianni Bernardi,Frank H. Briggs,S. Burns,John D. Bunton,Roger J. Cappallo,Brian E. Corey,Avinash A. Deshpande,Ludi deSouza,Bryan Gaensler,Lincoln J. Greenhill,Peter J. Hall,Bryna J. Hazelton,David Herne,Jacqueline N. Hewitt,Melanie Johnston-Hollitt,David L. Kaplan,Justin C. Kasper,B. B. Kincaid,R. Koenig,Eric Kratzenberg,Mervyn J. Lynch,Benjamin McKinley,Stephen R. McWhirter,Edward H. Morgan,Divya Oberoi,Joseph Pathikulangara,Thiagaraj Prabu,Ron Remillard,Alan E. E. Rogers,A. Roshi,Joseph E. Salah,Robert J. Sault,N. Udaya-Shankar,F. Schlagenhaufer,K. S. Srivani,Jamie Stevens,Ravi Subrahmanyan,M. Waterson,Rachel L. Webster,Alan R. Whitney,Andrew Williams,Christopher L. Williams,J. S. B. Wyithe +60 more
TL;DR: The Murchison Widefield Array (MWA) as discussed by the authors is one of three Square Kilometre Array Precursor telescopes and is located at the MUR-astronomy Observatory in Western Australia, a location chosen for its extremely low levels of radio frequency interference.
Journal ArticleDOI
Event-horizon-scale structure in the supermassive black hole candidate at the Galactic Centre
Sheperd S. Doeleman,Jonathan Weintroub,Alan E. E. Rogers,Richard Plambeck,Robert Freund,Remo P. J. Tilanus,Per Friberg,Lucy M. Ziurys,James M. Moran,Brian E. Corey,K. Young,Daniel L. Smythe,Michael Titus,Daniel P. Marrone,Daniel P. Marrone,Roger J. Cappallo,Douglas C.-J. Bock,Geoffrey C. Bower,R. A. Chamberlin,Gary R. Davis,Thomas P. Krichbaum,James W. Lamb,H. Maness,Arthur Niell,Alan L. Roy,Peter A. Strittmatter,Dan Werthimer,Alan R. Whitney,David P. Woody +28 more
TL;DR: Observations at a wavelength of 1.3 mm set a size of microarcseconds on the intrinsic diameter of Sagittarius A*, suggesting that the bulk of Sgr A* emission may not be centred on the black hole, but arises in the surrounding accretion flow.
Journal ArticleDOI
The Murchison Widefield Array: the Square Kilometre Array Precursor at low radio frequencies
Steven Tingay,Robert F. Goeke,Judd D. Bowman,David Emrich,Stephen M. Ord,Daniel A. Mitchell,Miguel F. Morales,Tom Booler,Brian Crosse,D. Pallot,Andreas Wicenec,W. Arcus,David G. Barnes,Gianni Bernardi,Frank H. Briggs,S. Burns,John D. Bunton,Roger J. Cappallo,T. Colegate,Brian E. Corey,Avinash A. Deshpande,L. deSouza,Bryan Gaensler,Lincoln J. Greenhill,J. Hall,Bryna J. Hazelton,David Herne,Jacqueline N. Hewitt,Melanie Johnston-Hollitt,David L. Kaplan,Justin C. Kasper,B. B. Kincaid,R. Koenig,Eric Kratzenberg,Colin J. Lonsdale,Mervyn J. Lynch,Benjamin McKinley,Stephen R. McWhirter,Edward H. Morgan,Divya Oberoi,Joseph Pathikulangara,Thiagaraj Prabu,Ron Remillard,Alan E. E. Rogers,A. Roshi,Joseph E. Salah,Robert J. Sault,N. Udaya-Shankar,F. Schlagenhaufer,K. S. Srivani,Jamie Stevens,Ravi Subrahmanyan,S. E. Tremblay,Randall B. Wayth,M. Waterson,Rachel L. Webster,Alan R. Whitney,Andrew Williams,Christopher L. Williams,J. S. B. Wyithe +59 more
TL;DR: The Murchison Widefield Array (MWA) as mentioned in this paper is one of three Square Kilometre Array Precursor telescopes and is located at the MUR-astronomy Observatory in Western Australia, a location chosen for its extremely low levels of radio frequency interference.
Journal ArticleDOI
First M87 Event Horizon Telescope Results. II. Array and Instrumentation
Kazunori Akiyama,Antxon Alberdi,Walter Alef,Keiichi Asada,Rebecca Azulay,Rebecca Azulay,Anne Kathrin Baczko,David Ball,Mislav Baloković,John E. Barrett,Dan Bintley,Lindy Blackburn,W. Boland,Katherine L. Bouman,Katherine L. Bouman,Geoffrey C. Bower,Michael Bremer,Christiaan D. Brinkerink,Roger Brissenden,Silke Britzen,Avery E. Broderick,Avery E. Broderick,Dominique Broguiere,Thomas Bronzwaer,Do-Young Byun,John E. Carlstrom,Andrew Chael,Chi-kwan Chan,Shami Chatterjee,Koushik Chatterjee,Ming-Tang Chen,Yi Chen,Yi Chen,Ilje Cho,Pierre Christian,Pierre Christian,John Conway,James M. Cordes,Geoffrey B. Crew,Yuzhu Cui,Yuzhu Cui,Jordy Davelaar,Mariafelicia De Laurentis,Mariafelicia De Laurentis,Roger Deane,Roger Deane,Jessica Dempsey,Gregory Desvignes,Jason Dexter,Sheperd S. Doeleman,R. P. Eatough,Heino Falcke,Vincent L. Fish,Ed Fomalont,Raquel Fraga-Encinas,Per Friberg,Christian M. Fromm,José L. Gómez,Peter Galison,Charles F. Gammie,Roberto Garcia,Olivier Gentaz,Boris Georgiev,Ciriaco Goddi,Ciriaco Goddi,Roman Gold,Minfeng Gu,Minfeng Gu,Mark Gurwell,Kazuhiro Hada,Kazuhiro Hada,Michael H. Hecht,Ronald Hesper,Luis C. Ho,Paul T. P. Ho,Mareki Honma,Mareki Honma,Chih-Wei Locutus Huang,Lei Huang,Lei Huang,David H. Hughes,Shiro Ikeda,Makoto Inoue,Sara Issaoun,David J. James,Buell T. Jannuzi,Michael Janssen,Britton Jeter,Wu Jiang,Michael D. Johnson,Svetlana G. Jorstad,Svetlana G. Jorstad,Taehyun Jung,Mansour Karami,Mansour Karami,Ramesh Karuppusamy,Tomohisa Kawashima,Garrett K. Keating,Mark Kettenis,Jae-Young Kim,Junhan Kim,Jongsoo Kim,Motoki Kino,Motoki Kino,Jun Yi Koay,Patrick M. Koch,Shoko Koyama,Michael Kramer,Carsten Kramer,Thomas P. Krichbaum,C. Y. Kuo,Tod R. Lauer,Sang-Sung Lee,Yan-Rong Li,Zhiyuan Li,Michael Lindqvist,Kuo Liu,Elisabetta Liuzzo,Wen Ping Lo,Wen Ping Lo,Andrei P. Lobanov,Laurent Loinard,Colin J. Lonsdale,Ru-Sen Lu,Ru-Sen Lu,Nicholas R. MacDonald,Jirong Mao,Sera Markoff,Daniel P. Marrone,Alan P. Marscher,Ivan Marti-Vidal,Satoki Matsushita,Lynn D. Matthews,Lia Medeiros,Lia Medeiros,Karl M. Menten,Yosuke Mizuno,Izumi Mizuno,James M. Moran,Kotaro Moriyama,Kotaro Moriyama,Monika Moscibrodzka,Cornelia Müller,Cornelia Müller,Hiroshi Nagai,Hiroshi Nagai,Neil M. Nagar,Masanori Nakamura,Ramesh Narayan,Gopal Narayanan,Iniyan Natarajan,Roberto Neri,Chunchong Ni,Aristeidis Noutsos,Hiroki Okino,Hiroki Okino,Hector Olivares,Gisela N. Ortiz-León,Tomoaki Oyama,Feryal Özel,Daniel C. M. Palumbo,Nimesh A. Patel,Ue-Li Pen,Ue-Li Pen,Ue-Li Pen,Dominic W. Pesce,Vincent Piétu,Richard L. Plambeck,Aleksandar Popstefanija,Oliver Porth,Oliver Porth,Ben Prather,Jorge A. Preciado-López,Dimitrios Psaltis,Hung Yi Pu,Venkatessh Ramakrishnan,Ramprasad Rao,Mark G. Rawlings,Alexander W. Raymond,Luciano Rezzolla,Bart Ripperda,Freek Roelofs,Alan E. E. Rogers,Eduardo Ros,Mel Rose,Arash Roshanineshat,Helge Rottmann,Alan L. Roy,Chet Ruszczyk,Benjamin R. Ryan,Kazi L.J. Rygl,S. Sánchez,David Sánchez-Arguelles,David Sánchez-Arguelles,Mahito Sasada,Mahito Sasada,Tuomas Savolainen,Tuomas Savolainen,F. Peter Schloerb,Karl Friedrich Schuster,Lijing Shao,Lijing Shao,Zhiqiang Shen,Zhiqiang Shen,Des Small,Bong Won Sohn,Bong Won Sohn,Jason SooHoo,Fumie Tazaki,Paul Tiede,Remo P. J. Tilanus,Remo P. J. Tilanus,Michael Titus,Kenji Toma,Pablo Torne,Tyler Trent,Sascha Trippe,Shuichiro Tsuda,Ilse van Bemmel,Huib Jan van Langevelde,Huib Jan van Langevelde,Daniel R. van Rossum,Jan Wagner,John Wardle,Jonathan Weintroub,Norbert Wex,Robert Wharton,Maciek Wielgus,George N. Wong,Qingwen Wu,André Young,Ken H. Young,Ziri Younsi,Ziri Younsi,Feng Yuan,Feng Yuan,Ye-Fei Yuan,J. Anton Zensus,Guang-Yao Zhao,Shan Shan Zhao,Shan Shan Zhao,Ziyan Zhu,Juan-Carlos Algaba,Juan-Carlos Algaba,Alexander Allardi,Rodrigo Amestica,Uwe Bach,Christopher Beaudoin,Bradford Benson,Ryan Berthold,J. Blanchard,J. Blanchard,Ray Blundell,Sandra Bustamente,Roger J. Cappallo,E. Castillo-Domínguez,E. Castillo-Domínguez,Chih Cheng Chang,Chih Cheng Chang,Shu Hao Chang,Song Chu Chang,Chung Chen Chen,Ryan Chilson,Timothy C. Chuter,Rodrigo Córdova Rosado,Iain Coulson,T. M. Crawford,Joseph Crowley,John David,Mark Derome,Matthew R. Dexter,Sven Dornbusch,Kevin A. Dudevoir,S. A. Dzib,Chris Eckert,Neal R. Erickson,W. B. Everett,Aaron Faber,Joseph R. Farah,Joseph R. Farah,Vernon Fath,Thomas W. Folkers,David C. Forbes,Robert Freund,Arturo I. Gómez-Ruiz,Arturo I. Gómez-Ruiz,David M. Gale,Feng Gao,Feng Gao,Gertie Geertsema,D. A. Graham,Christopher Greer,Ronald Grosslein,Frederic Gueth,N. W. Halverson,Chih Chiang Han,Kuo Chang Han,Jinchi Hao,Yutaka Hasegawa,Jason W. Henning,Jason W. Henning,Antonio Hernández-Gómez,Antonio Hernández-Gómez,Rubén Herrero-Illana,Stefan Heyminck,Akihiko Hirota,Akihiko Hirota,James Hoge,Yau De Huang,C. M.Violette Impellizzeri,C. M.Violette Impellizzeri,Homin Jiang,Atish Kamble,Ryan Keisler,Kimihiro Kimura,Yusuke Kono,Derek Kubo,John Kuroda,Richard Lacasse,R. Laing,Erik M. Leitch,Chao-Te Li,Lupin C.C. Lin,Lupin C.C. Lin,Ching Tang Liu,Kuan Yu Liu,Li Ming Lu,Ralph G. Marson,Pierre Martin-Cocher,Kyle D. Massingill,Callie Matulonis,Martin P. McColl,Stephen R. McWhirter,Hugo Messias,Hugo Messias,Zheng Meyer-Zhao,Zheng Meyer-Zhao,Daniel Michalik,A. Montaña,A. Montaña,William Montgomerie,M. Mora-Klein,Dirk Muders,A. Nadolski,S. Navarro,Chi H. Nguyen,Chi H. Nguyen,Hiroaki Nishioka,Timothy Norton,George Nystrom,Hideo Ogawa,Peter Oshiro,Stephen Padin,Harriet Parsons,Scott Paine,J. Peñalver,N. Phillips,N. Phillips,M. Poirier,Nicolas Pradel,Rurik A. Primiani,Philippe Raffin,Alexandra S. Rahlin,Alexandra S. Rahlin,George Reiland,Christopher Risacher,Ignacio Ruiz,Alejandro F. Sáez-Madain,Alejandro F. Sáez-Madain,Remi Sassella,Pim Schellart,Pim Schellart,Paul Shaw,Kevin M. Silva,Hotaka Shiokawa,David R. Smith,William Snow,Kamal Souccar,Don Sousa,T. K. Sridharan,Ranjani Srinivasan,William Stahm,Antony A. Stark,K. T. Story,Sjoerd T. Timmer,Laura Vertatschitsch,Craig Walther,Ta Shun Wei,Nathan Whitehorn,Alan R. Whitney,David P. Woody,J. G. A. Wouterloot,M. C. H. Wright,Paul Yamaguchi,Chen Yu Yu,M. Zeballos,M. Zeballos,Lucy M. Ziurys +397 more
TL;DR: The Event Horizon Telescope (EHT) as mentioned in this paper is a very long baseline interferometry (VLBI) array that comprises millimeter and submillimeter-wavelength telescopes separated by distances comparable to the diameter of the Earth.