The Event Horizon General Relativistic Magnetohydrodynamic Code Comparison Project

Oliver Porth , Koushik Chatterjee , Ramesh Narayan , Charles F. Gammie , Yosuke Mizuno , Peter Anninos , John G. Baker , Matteo Bugli (1) , Chi-Kwan Chan , Jordy Davelaar , Luca del Zanna , Zachariah B. Etienne , Chris P. Fragile , Bernard J. Kelly , Matthew Liska , Sera Markoff , Jonathan C. Mckinney , Bhupendra Mishra , Scott C. Noble , Héctor Olivares , Ben Prather , Luciano Rezzolla , Benjamin R. Ryan , James M. Stone , Niccolò Tomei , Christopher J. White , Ziri Younsi , Kazunori Akiyama , Antxon Alberdi , Walter Alef , Keiichi Asada , Rebecca Azulay , Anne-Kathrin Baczko , David Ball , Mislav Baloković , John Barrett , Dan Bintley , Lindy Blackburn , Wilfred Boland , Katherine L. Bouman , Geoffrey C. Bower , Michael Bremer (2) , Christiaan D. Brinkerink , Roger Brissenden , Silke Britzen , Avery E. Broderick , Dominique Broguiere (2) , Thomas Bronzwaer , Do-Young Byun , John E. Carlstrom , Andrew Chael , Shami Chatterjee , Ming-Tang Chen , Yongjun Chen , Ilje Cho , Pierre Christian , John E. Conway , James M. Cordes , B.Crew Geoffrey , Yuzhu Cui , Mariafelicia de Laurentis , Roger Deane , Jessica Dempsey , Gregory Desvignes , Sheperd S. Doeleman , Ralph P. Eatough , Heino Falcke , Vincent L. Fish , E. Fomalont , Raquel Fraga-Encinas , Bill Freeman , Per Friberg , Christian M. Fromm , José L. Gómez , Peter Galison , Roberto García (2) , Olivier Gentaz (2) , Boris Georgiev , Ciriaco Goddi , Roman Gold , Minfeng Gu , Mark Gurwell , Kazuhiro Hada , Michael H. Hecht , Ronald Hesper , Luis C. Ho , Paul Ho , Mareki Honma , Chih-Wei L. 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 Jorstad , Taehyun Jung , Mansour Karami , Ramesh Karuppusamy , Tomohisa Kawashima , Garrett K. Keating , Mark Kettenis , Jae-Young Kim , Junhan Kim , Jongsoo Kim , Motoki Kino , Jun Yi Koay , M.Koch Patrick , Shoko Koyama , Michael Kramer , Carsten Kramer (2) , Thomas P. Krichbaum , Cheng-Yu Kuo , Tod R. Lauer , Sang-Sung Lee , Yan-Rong Li , Zhiyuan Li , Michael Lindqvist , Kuo Liu , Elisabetta Liuzzo , Wen-Ping Lo , Andrei P. Lobanov , Laurent Loinard , Colin Lonsdale , Ru-Sen Lu , Nicholas R. Macdonald , Jirong Mao , Daniel P. Marrone , Alan P. Marscher , Iván Martí-Vidal , Satoki Matsushita , Lynn D. Matthews , Lia Medeiros , Karl M. Menten , Izumi Mizuno , James M. Moran , Kotaro Moriyama , Monika Moscibrodzka , Cornelia Müller , Hiroshi Nagai , Neil M. Nagar , Masanori Nakamura , Gopal Narayanan , Iniyan Natarajan , Roberto Neri (2) , Chunchong Ni , Aristeidis Noutsos , Hiroki Okino , Tomoaki Oyama , Feryal Özel , Daniel C.M. Palumbo , Nimesh Patel , Ue-Li Pen , Dominic W. Pesce , Vincent Piétu (2) , Richard Plambeck , Aleksandar Popstefanija , Jorge A. Preciado-López , Dimitrios Psaltis , Hung-Yi Pu , Venkatessh Ramakrishnan , Ramprasad Rao , Mark G. Rawlings , Alexander W. Raymond , Bart Ripperda , Freek Roelofs , Alan Rogers , Eduardo Ros , Mel Rose , Arash Roshanineshat , Helge Rottmann , Alan L. Roy , Chet Ruszczyk , Kazi L.J. Rygl , Salvador Sánchez (3) , David Sánchez-Arguelles , Mahito Sasada , Tuomas Savolainen , F. Peter Schloerb , Karl-Friedrich Schuster (2) , Lijing Shao , Zhiqiang Shen , Des Small , Bong Won Sohn , Jason Soohoo , Fumie Tazaki , Paul Tiede , Remo P.J. Tilanus , Michael Titus , Kenji Toma , Pablo Torne (3) , Tyler Trent , Sascha Trippe , Shuichiro Tsuda , Ilse van Bemmel , 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 Young , André Young , Feng Yuan , Ye-Fei Yuan , J. Anton Zensus , Guangyao Zhao , Shan-Shan Zhao , Ziyan Zhu

1 AIM (UMR7158 / UMR_E_9005 / UM_112) - Astrophysique Interprétation Modélisation
2 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
3 IRAM - Instituto de RadioAstronomía Milimétrica

Recent developments in compact object astrophysics, especially the discovery of merging neutron stars by LIGO, the imaging of the black hole in M87 by the Event Horizon Telescope, and high- precision astrometry of the Galactic Center at close to the event horizon scale by the GRAVITY experiment motivate the development of numerical source models that solve the equations of general relativistic magnetohydrodynamics (GRMHD). Here we compare GRMHD solutions for the evolution of a magnetized accretion flow where turbulence is promoted by the magnetorotational instability from a set of nine GRMHD codes: Athena++, BHAC, Cosmos++, ECHO, H-AMR, iharm3D, HARM-Noble, IllinoisGRMHD, and KORAL. Agreement among the codes improves as resolution increases, as measured by a consistently applied, specially developed set of code performance metrics. We conclude that the community of GRMHD codes is mature, capable, and consistent on these test problems.

Domaines: Astrophysique [astro-ph]; Relativité Générale et Cosmologie Quantique [gr-qc]

Oliver Porth, Koushik Chatterjee, Ramesh Narayan, Charles F. Gammie, Yosuke Mizuno, et al.. The Event Horizon General Relativistic Magnetohydrodynamic Code Comparison Project. Astrophys.J.Suppl., 2019, 243 (2), pp.26. ⟨10.3847/1538-4365/ab29fd⟩. ⟨hal-02129669⟩