FR
Freek Roelofs
astro-ph.HEastro-ph.IMastro-ph.GAgr-qcastro-ph.COhep-phcs.CVhep-th
On Valency
published · living versionsW_zj5juagt·v1 · currentpublished
The Black Hole Explorer: Motivation and Vision
with Michael D. Johnson, Kazunori Akiyama, Rebecca Baturin, Bryan Bilyeu +63
1 version
Preprints & journals
52 papers in the corpus · 2015–2026The SHARPEx space-to-space VLBI experiment2609.20102v1 · Freek Roelofs, Christiaan Brinkerink, Albert Catalan Artigas et al.2026 · 0 citationsProc. SPIE 14153, 1415319 (2026)
Dynamics and geometry of the inner sub-parsec-scale jet in 3C 279 observed with the Event Horizon Telescope2607.16104v1 · Hendrik Mueller, Sebastiano D. von Fellenberg, Ai-Ling Zeng et al.2026 · 0 citationsarXiv
Broadband multiwavelength properties of the archetypal blazar 3C 279 during the 2017 Event Horizon Telescope campaign2606.25868v2 · G. Principe, J. C. Algaba, E. Aviano et al.2026 · 0 citationsA&A, 712, A224 (2026)
Shaping the future of Global Interferometric Arrays: Imaging Strong Gravity and Magnetic Fields2605.04133v1 · Venkatessh Ramakrishnan, Violette Impellizzeri, Chi-Kwan Chan et al.2026 · 0 citationsarXiv
Full-polarization millimeter wavelength variability of Sagittarius A* during the 2018 EHT campaign2604.10287v1 · Ezequiel Albentosa-Ruiz, Jasmin E. Washington, Nicola Marchili et al.2026 · 1 citationAstronomy & Astrophysics 708 (2026) A179
Locating the missing large-scale emission in the jet of M87* with short EHT baselines2601.13356v1 · Boris Georgiev, Paul Tiede, Sebastiano D. von Fellenberg et al.2026 · 1 citationA&A 709, A26 (2026)
Ring Asymmetry and Spin in M87*2601.00394v2 · Vadim Bernshteyn, Nicholas S. Conroy, Michi Baubock et al.2026 · 5 citationsApJ 1000 231 (2026)
Probing jet base emission of M87* with the 2021 Event Horizon Telescope observations2512.08970v1 · Saurabh, Hendrik Muller, Sebastiano D. von Fellenberg et al.2025 · 4 citationsarXiv
Origin of the ring ellipticity in the black hole images of M87*2505.10333v1 · Rohan Dahale, Ilje Cho, Kotaro Moriyama et al.2025 · 4 citationsA&A 699, A279 (2025)
Enhanced imaging of M87*: Simulations with the EHT and extended-KVN2501.11822v1 · Ilje Cho, Jongho Park, Do-Young Byun et al.2025 · 1 citationJournal of The Korean Astronomical Society Vol.58 No.1 pp.17-29 (2025)
The putative center in NGC 10522501.08685v1 · Anne-Kathrin Baczko, Matthias Kadler, Eduardo Ros et al.2025 · 10 citationsA&A, 692, A205 (2024)
A multi-frequency study of sub-parsec jets with the Event Horizon Telescope2501.05518v1 · Jan Roder, Maciek Wielgus, Andrei P. Lobanov et al.2025 · 13 citationsA&A 695, A233 (2025)
First Very Long Baseline Interferometry Detections at 870{\mu}m2410.07453v1 · Alexander W. Raymond, Sheperd S. Doeleman, Keiichi Asada et al.2024 · 33 citationsThe Astronomical Journal, Volume 168, Issue 3, id.130, 19 pp. 2024
The Black Hole Explorer: Motivation and Vision2406.12917v1 · Michael D. Johnson, Kazunori Akiyama, Rebecca Baturin et al.2024 · 91 citationsProceedings Volume 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave; 130922D (2024)on Valency
Broadband Multi-wavelength Properties of M87 during the 2018 EHT Campaign including a Very High Energy Flaring Episode2404.17623v3 · J. C. Algaba, M. Balokovic, S. Chandra et al.2024 · 35 citationsA&A 692, A140 (2024)
Atmospheric limitations for high-frequency ground-based VLBI2404.01482v1 · Dominic W. Pesce, Lindy Blackburn, Ryan Chaves et al.2024 · 3 citationsarXiv
Imaging the event horizon of M87* from space on different timescales2403.03327v1 · Anastasia Shlentsova, Freek Roelofs, Sara Issaoun et al.2024 · 7 citationsarXiv
Ordered magnetic fields around the 3C 84 central black hole2402.00927v1 · G. F. Paraschos, J.-Y. Kim, M. Wielgus et al.2024 · 27 citationsIssue: A&A Volume 682, February 2024; Article number: L3; Number of pages: 15
Polarimetric Geometric Modeling for mm-VLBI Observations of Black Holes2311.10695v1 · Freek Roelofs, Michael D. Johnson, Andrew Chael et al.2023 · 11 citationsThe Astrophysical Journal Letters, 2023, Volume 957, Issue 2, id.L21, 29 pp
A search for pulsars around Sgr A* in the first Event Horizon Telescope dataset2308.15381v1 · Pablo Torne, Kuo Liu, Ralph P. Eatough et al.2023 · 15 citationsarXiv
Reference Array and Design Consideration for the next-generation Event Horizon Telescope2306.08787v3 · Sheperd S. Doeleman, John Barrett, Lindy Blackburn et al.2023 · 75 citationsGalaxies 2023, 11(5), 107
The EB-correlation in Resolved Polarized Images: Connections to Astrophysics of Black Holes2305.00387v2 · Razieh Emami, Sheperd S. Doeleman, Maciek Wielgus et al.2023 · 0 citationsarXiv
Key Science Goals for the Next-Generation Event Horizon Telescope2304.11188v1 · Michael D. Johnson, Kazunori Akiyama, Lindy Blackburn et al.2023 · 139 citationsGalaxies 2023, 11(3), 61
Comparison of Polarized Radiative Transfer Codes used by the EHT Collaboration2303.12004v2 · Cora Prather, Jason Dexter, Monika Moscibrodzka et al.2023 · 24 citationsApJ, 950, 35, 2023
Enabling Transformational ngEHT Science via the Inclusion of 86 GHz Capabilities2302.05415v1 · Sara Issaoun, Dominic W. Pesce, Freek Roelofs et al.2023 · 20 citationsGalaxies 2023, 11(1), 28
Expanding Sgr A* dynamical imaging capabilities with an African extension to the Event Horizon Telescope2301.11384v1 · Noemi La Bella, Sara Issaoun, Freek Roelofs et al.2023 · 7 citationsA&A 672, A16 (2023)
The ngEHT Analysis Challenges2212.11355v1 · Freek Roelofs, Lindy Blackburn, Greg Lindahl et al.2022 · 35 citationsarXiv
Accretion Flow Morphology in Numerical Simulations of Black Holes from the ngEHT Model Library: The Impact of Radiation Physics2212.01804v2 · Koushik Chatterjee, Andrew Chael, Paul Tiede et al.2022 · 22 citationsarXiv
Modeling Reconstructed Images of Jets Launched by SANE Super-Eddington Accretion Flows Around SMBHs with the ngEHT2211.15906v1 · Brandon Curd, Razieh Emami, Freek Roelofs et al.2022 · 4 citationsarXiv
Tracing the hot spot motion using the next generation Event Horizon Telescope (ngEHT)2211.06773v2 · Razieh Emami, Paul Tiede, Sheperd S. Doeleman et al.2022 · 0 citationsarXiv
Observational Signatures of Frame Dragging in Strong Gravity2211.01810v1 · Angelo Ricarte, Daniel C. M. Palumbo, Ramesh Narayan et al.2022 · 35 citationsarXiv
Unraveling Twisty Linear Polarization Morphologies in Black Hole Images2210.01218v2 · Razieh Emami, Angelo Ricarte, George N. Wong et al.2022 · 34 citationsarXiv
The science case and challenges of space-borne sub-millimeter interferometry2204.09144v2 · Leonid I. Gurvits, Zsolt Paragi, Ricardo I. Amils et al.2022 · 47 citationsActa Astronautica 196 (2022) 314
MeqSilhouette v2: Spectrally-resolved polarimetric synthetic data generation for the Event Horizon Telescope2202.11478v1 · Iniyan Natarajan, Roger Deane, Iv'an Mart'i-Vidal et al.2022 · 15 citationsarXiv
The Variability of the Black-Hole Image in M87 at the Dynamical Time Scale2111.01317v1 · Kaushik Satapathy, Dimitrios Psaltis, Feryal Ozel et al.2021 · 18 citationsarXiv
Constraints on black-hole charges with the 2017 EHT observations of M87*2105.09343v1 · Prashant Kocherlakota, Luciano Rezzolla, Heino Falcke et al.2021 · 344 citationsarXiv
An Event Horizon Imager (EHI) Mission Concept Utilizing Medium Earth Orbit Sub-mm Interferometry2105.06882v1 · V. Kudriashov, M. Martin-Neira, F. Roelofs et al.2021 · 16 citationsChinese Journal of Space Science, 2021, Vol. 41, Issue 2, pages 211-233
Black hole parameter estimation with synthetic Very Long Baseline Interferometry data from the ground and from space2103.16736v1 · Freek Roelofs, Christian M. Fromm, Yosuke Mizuno et al.2021 · 30 citationsA&A 650, A56 (2021)
Gravitational Test beyond the First Post-Newtonian Order with the Shadow of the M87 Black Hole.33064506 · Psaltis, Dimitrios, Medeiros, Lia, Christian, Pierre et al.2020 · 334 citationsPhysical review letters. 2020;125(14):141104
Simulations of M87 and Sgr A* Imaging with the Millimetron Space Observatory on near-Earth orbits2006.10120v2 · A. S. Andrianov, A. M. Baryshev, H. Falcke et al.2020 · 41 citationsarXiv
SYMBA: An end-to-end VLBI synthetic data generation pipeline2004.01161v1 · F. Roelofs, M. Janssen, I. Natarajan et al.2020 · 35 citationsarXiv
First M87 Event Horizon Telescope Results and the Role of ALMA1910.10193v1 · Ciriaco Goddi, Geoff Crew, Violette Impellizzeri et al.2019 · 16 citationsThe Messenger, 177, 25 (2019)
Studying Black Holes on Horizon Scales with VLBI Ground Arrays1909.01411v2 · Lindy Blackburn, Sheperd Doeleman, Jason Dexter et al.2019 · 46 citationsarXiv
TeraHertz Exploration and Zooming-in for Astrophysics (THEZA): ESA Voyage 2050 White Paper1908.10767v3 · Leonid I. Gurvits, Zsolt Paragi, Viviana Casasola et al.2019 · 54 citationsExperimental Astronomy, 2021
Modeling non-thermal emission from the jet-launching region of M 87 with adaptive mesh refinement1906.10065v1 · J. Davelaar, H. Olivares, O. Porth et al.2019 · 96 citationsA&A 632, A2 (2019)
Simulations of imaging the event horizon of Sagittarius A* from space1904.04934v1 · Freek Roelofs, Heino Falcke, Christiaan Brinkerink et al.2019 · 76 citationsA&A 625, A124 (2019)
The Size, Shape, and Scattering of Sagittarius A* at 86 GHz: First VLBI with ALMA1901.06226v1 · S. Issaoun, M. D. Johnson, L. Blackburn et al.2019 · 123 citationsarXiv
Dynamical Imaging with Interferometry1711.01286v1 · Michael D. Johnson, Katherine L. Bouman, Lindy Blackburn et al.2017 · 68 citationsarXiv
Reconstructing Video from Interferometric Measurements of Time-Varying Sources1711.01357v2 · Katherine L. Bouman, Michael D. Johnson, Adrian V. Dalca et al.2017 · 6 citationsarXiv
Quantifying Intrinsic Variability of Sagittarius A* using Closure Phase Measurements of the Event Horizon Telescope1708.01056v1 · Freek Roelofs, Michael D. Johnson, Hotaka Shiokawa et al.2017 · 30 citationsarXiv
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