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Gurvits, L. (author), Falcke, Heino (author), Frey, Sándor (author), Fromm, Christian M. (author), García-Miró, Cristina (author), Janssen, Michael (author), Masania, K. (author), Rajan, R.T. (author), Visser, P.N.A.M. (author)Ultra-high angular resolution in astronomy has always been an important vehicle for making fundamental discoveries. Recent results in direct imaging of the vicinity of the supermassive black hole in the nucleus of the radio galaxy M87 by the millimeter VLBI system Event Horizon Telescope and various pioneering results of the Space VLBI...journal article 2022
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Gurvits, L. (author), Paragi, Zsolt (author), Casasola, Viviana (author), Conway, John (author), Davelaar, Jordy (author), Falcke, Heino (author), Fender, Rob (author), Frey, Sándor (author), Fromm, Christian M. (author)This paper presents the ESA Voyage 2050 White Paper for a concept of TeraHertz Exploration and Zooming-in for Astrophysics (THEZA). It addresses the science case and some implementation issues of a space-borne radio interferometric system for ultra-sharp imaging of celestial radio sources at the level of angular resolution down to (sub-)...journal article 2021
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Roelofs, Freek (author), Falcke, Heino (author), Brinkerink, Christiaan (author), Moscibrodzka, Monika (author), Gurvits, L. (author), Martin-Neira, Manuel (author), Kudriashov, Volodymyr (author), Klein-Wolt, Marc (author), Tilanus, Remo (author)Very Long Baseline Interferometry (VLBI) at sub-millimeter waves has the potential to image the shadow of the black hole in the Galactic Center, Sagittarius A∗ (Sgr A∗), and thereby test basic predictions of the theory of general relativity. We investigate the imaging prospects of a new Space VLBI mission concept. The setup consists of two...journal article 2020
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Bentum, M. J. (author), Verma, M. K. (author), Rajan, R.T. (author), Boonstra, A. J. (author), Verhoeven, C.J.M. (author), Gill, E.K.A. (author), van der Veen, A.J. (author), Falcke, H. (author), Gurvits, L. (author)The past two decades have witnessed a renewed interest in low frequency radio astronomy, with a particular focus on frequencies above 30 MHz e.g., LOFAR (LOw Frequency ARray) in the Netherlands and its European extension ILT, the International LOFAR Telescope. However, at frequencies below 30 MHz, Earth-based observations are limited due to a...journal article 2020
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Agudo, I. (author), Bottcher, M. (author), Falcke, H. (author), Georganopoulos, M. (author), Ghisellini, G. (author), Giovannini, G. (author), Giroletti, M. (author), Gomez, J.L. (author), Gurvits, L. (author), Laing, R. (author), Lister, M. (author), Marti, J.M. (author), Meyer, E.T. (author), Mizuno, Y. (author), O'Sullivan, S. (author), Padovani, P. (author), Paragi, Z. (author), Perucho, M. (author), Schleicher, D. (author), Stawarz, L. (author), Vlahakis, N. (author), Wardle, J. (author)Relativistic jets in active galactic nuclei (AGN) are among the most powerful astrophysical objects discovered to date. Indeed, jetted AGN studies have been considered a prominent science case for SKA, and were included in several different chapters of the previous SKA Science Book (Carilli & Rawlings 2004). Most of the fundamental questions...journal article 2014
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- Siemion, A.P.V. (author), Benford, J. (author), Cheng-Jin, J. (author), Chennamangalam, J. (author), Cordes, J. (author), Falcke, H. (author), Garrington, S. (author), Garrett, M. (author), Gurvits, L.I. (author), Hoare, M. (author), Korpela, E. (author), Lazio, J. (author), Messerschmitt, D. (author), Morrison, I. (author), O'Brien, T. (author), Paragi, Z. (author), Penny, A. (author), Spitler, L. (author), Tarter, J. (author), Werthimer, D. (author) conference paper 2014