Venkatessh Ramakrishnan

Spatially resolved polarization swings in the supermassive binary black hole candidate OJ 287 with first Event Horizon Telescope observations

José L. Gómez, Ilje Cho, Efthalia Traianou, Thomas P. Krichbaum, Guang Yao Zhao, Rocco Lico, Antonio Fuentes, Marianna Foschi, Rohan Dahale, Boris Georgiev, Kotaro Moriyama, Maciek Wielgus, Roman Gold, Dominic W. Pesce, Hendrik Müller, Svetlana Jorstad, Teresa Toscano, Jan Röder, José M. Martí, Manel Perucho, Yuri Y. Kovalev, Stefanie Komossa, Achamveedu Gopakumar, Mauri J. Valtonen, Gabriele Bruni, Sunil Chandra, Kazunori Akiyama, Ezequiel Albentosa-Ruíz, Antxon Alberdi, Walter Alef, Juan Carlos Algaba, Richard Anantua, Keiichi Asada, Rebecca Azulay, Uwe Bach, Anne Kathrin Baczko, David Ball, Mislav Baloković, Bidisha Bandyopadhyay, John Barrett, Michi Bauböck, Bradford A. Benson, Dan Bintley, Lindy Blackburn, Raymond Blundell, Katherine L. Bouman, Britton Jeter, Venkatessh Ramakrishnan, Tuomas Savolainen, Kaj Wiik 2026 Astronomy and Astrophysics

Horizon-scale variability of M87* from 2017–2021 EHT observations

Kazunori Akiyama, Ezequiel Albentosa-Ruíz, Antxon Alberdi, Walter Alef, Juan Carlos Algaba, Richard Anantua, Keiichi Asada, Rebecca Azulay, Uwe Bach, Anne Kathrin Baczko, David Ball, Mislav Baloković, Bidisha Bandyopadhyay, John Barrett, Michi Bauböck, Bradford A. Benson, Dan Bintley, Lindy Blackburn, Raymond Blundell, Katherine L. Bouman, Geoffrey C. Bower, Michael Bremer, Roger Brissenden, Silke Britzen, Avery E. Broderick, Dominique Broguiere, Thomas Bronzwaer, Sandra Bustamante, Douglas F. Carlos, John E. Carlstrom, Andrew Chael, Chi Kwan Chan, Dominic O. Chang, Erandi Chavez, Koushik Chatterjee, Shami Chatterjee, Ming Tang Chen, Yongjun Chen, Xiaopeng Cheng, Paul Chichura, Ilje Cho, Pierre Christian, Britton Jeter, Dong Jin Kim, Zhiyuan Li, Venkatessh Ramakrishnan, Tuomas Savolainen, Jan Wagner, Jasmin E. Washington, Kaj Wiik 2025 Astronomy & Astrophysics

The persistent shadow of the supermassive black hole of M87: II. Model comparisons and theoretical interpretations

Kazunori Akiyama, Ezequiel Albentosa-Ruíz, Antxon Alberdi, Walter Alef, Juan Carlos Algaba, Richard Anantua, Keiichi Asada, Rebecca Azulay, Uwe Bach, Anne Kathrin Baczko, David Ball, Mislav Baloković, Bidisha Bandyopadhyay, John Barrett, Michi Bauböck, Bradford A. Benson, Dan Bintley, Lindy Blackburn, Raymond Blundell, Katherine L. Bouman, Geoffrey C. Bower, Michael Bremer, Roger Brissenden, Silke Britzen, Avery E. Broderick, Dominique Broguiere, Thomas Bronzwaer, Sandra Bustamante, John E. Carlstrom, Andrew Chael, Chi Kwan Chan, Dominic O. Chang, Koushik Chatterjee, Shami Chatterjee, Ming Tang Chen, Yongjun Chen, Xiaopeng Cheng, Ilje Cho, Pierre Christian, Nicholas S. Conroy, John E. Conway, Thomas M. Crawford, Geoffrey B. Crew, Dong Jin Kim, Zhiyuan Li, Venkatessh Ramakrishnan, Tuomas Savolainen, Jan Wagner, Jasmin E. Washington, Kaj Wiik 2025 Astronomy & Astrophysics

Origin of the ring ellipticity in the black hole images of M87

Rohan Dahale, Ilje Cho, Kotaro Moriyama, Kaj Wiik, Paul Tiede, José L. Gómez, Chi Kwan Chan, Roman Gold, Vadim Y. Bernshteyn, Marianna Foschi, Britton Jeter, Hung Yi Pu, Boris Georgiev, Abhishek V. Joshi, Alejandro Cruz-Osorio, Iniyan Natarajan, Avery E. Broderick, León D.S. Salas, Koushik Chatterjee, Kazunori Akiyama, Ezequiel Albentosa-Ruíz, Antxon Alberdi, Walter Alef, Juan Carlos Algaba, Richard Anantua, Keiichi Asada, Rebecca Azulay, Uwe Bach, Anne Kathrin Baczko, David Ball, Mislav Baloković, Bidisha Bandyopadhyay, John Barrett, Michi Bauböck, Bradford A. Benson, Dan Bintley, Lindy Blackburn, Raymond Blundell, Katherine L. Bouman, Geoffrey C. Bower, Michael Bremer, Roger Brissenden, Silke Britzen, Dominique Broguiere, Thomas Bronzwaer, Sandra Bustamante, Douglas Ferreira Carlos, Venkatessh Ramakrishnan, Tuomas Savolainen, Jasmin E. Washington 2025 Astronomy & Astrophysics

Tracking X-Ray Variability in Next-generation EHT Low-luminosity Active Galactic Nucleus Targets

Nicole M. Ford, Michael Nowak, Venkatessh Ramakrishnan, Daryl Haggard, Kristen Dage, Dhanya G. Nair, Chi Kwan Chan 2025 Astrophysical Journal

First polarization study of the M87 jet and active galactic nuclei at submillimeter wavelengths with ALMA

Ciriaco Goddi, Douglas F. Carlos, Geoffrey B. Crew, Lynn D. Matthews, Hugo Messias, Alejandro Mus, Iván Martí-Vidal, Ezequiel Albentosa-Ruíz, Mariafelicia De Laurentis, Elisabetta Liuzzo, Nicola Marchili, Kazi L.J. Rygl, Kazunori Akiyama, Antxon Alberdi, Walter Alef, Juan Carlos Algaba, Richard Anantua, Keiichi Asada, Rebecca Azulay, Uwe Bach, Anne Kathrin Baczko, David Ball, Mislav Balokoviä, Bidisha Bandyopadhyay, John Barrett, Michi Bauböck, Bradford A. Benson, Dan Bintley, Lindy Blackburn, Raymond Blundell, Katherine L. Bouman, Geoffrey C. Bower, Michael Bremer, Roger Brissenden, Silke Britzen, Avery E. Broderick, Dominique Broguiere, Thomas Bronzwaer, Sandra Bustamante, John E. Carlstrom, Andrew Chael, Chi Kwan Chan, Dominic O. Chang, Koushik Chatterjee, Shami Chatterjee, Ming Tang Chen, Venkatessh Ramakrishnan, Tuomas Savolainen, Jasmin E. Washington, Kaj Wiik 2025 Astronomy & Astrophysics

Gamma-ray flares from the jet of the blazar CTA 102 in 2016–2018

Sanghyun Kim, Sang Sung Lee, Juan Carlos Algaba, Bindu Rani, Jongho Park, Hyeon Woo Jeong, Whee Yeon Cheong, Filippo D’Ammando, Anne Lähteenmäki, Merja Tornikoski, Joni Tammi, Venkatessh Ramakrishnan, Iván Agudo, Carolina Casadio, Juan Escudero, Antonio Fuentes, Efthalia Traianou, Ioannis Myserlis, Clemens Thum 2025 Astronomy & Astrophysics

Keplerian molecular gas disk and black hole mass of NGC 4751

J. Osorno, N. Nagar, T. Richtler, V. Ramakrishnan, C. Finlez, H. Messias, K. Gültekin, K. Gebhardt, P. Teuben 2025 Astronomy & Astrophysics

A multifrequency study of sub-parsec jets with the Event Horizon Telescope

Jan Röder, Maciek Wielgus, Andrei P. Lobanov, Thomas P. Krichbaum, Dhanya G. Nair, Sang Sung Lee, Eduardo Ros, Vincent L. Fish, Lindy Blackburn, Chi Kwan Chan, Sara Issaoun, Michael Janssen, Michael D. Johnson, Sheperd S. Doeleman, Geoffrey C. Bower, Geoffrey B. Crew, Remo P.J. Tilanus, Tuomas Savolainen, C. M. Violette Impellizzeri, Antxon Alberdi, Anne Kathrin Baczko, José L. Gómez, Ru Sen Lu, Georgios F. Paraschos, Efthalia Traianou, Ciriaco Goddi, Daewon Kim, Mikhail Lisakov, Yuri Y. Kovalev, Petr A. Voitsik, Kirill V. Sokolovsky, Kazunori Akiyama, Ezequiel Albentosa-Ruíz, Walter Alef, Juan Carlos Algaba, Richard Anantua, Keiichi Asada, Rebecca Azulay, Uwe Bach, David Ball, Mislav Baloković, Bidisha Bandyopadhyay, John Barrett, Michi Bauböck, Dong Jin Kim, Zhiyuan Li, Venkatessh Ramakrishnan, Jan Wagner, Jasmin E. Washington, Kaj Wiik 2025 Astronomy & Astrophysics

Accessing a New Population of Supermassive Black Holes with Extensions to the Event Horizon Telescope

Xinyue Alice Zhang, Angelo Ricarte, Dominic W. Pesce, Michael D. Johnson, Neil Nagar, Ramesh Narayan, Venkatessh Ramakrishnan, Sheperd Doeleman, Daniel C.M. Palumbo 2025 Astrophysical Journal

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