Venkatessh Ramakrishnan
University of Lethbridge, Tampere University, Aalto University Metsähovi Radio Observatory, Finnish Center for Astronomy with ESO
Research areas: Physics and Astronomy · Astronomy and Astrophysics · Astrophysical Phenomena and Observations · Astrophysics and Cosmic Phenomena · Pulsars and Gravitational Waves Research
0000-0002-9248-086X
About
Venkatessh Ramakrishnan is currently a postdoctoral researcher at the Finnish Centre for Astronomy with ESO, Finland. He works on supermassive black holes in the nearby Universe and also the one lurking in the centre of the Milky Way (Sgr A*). One of his primary tools for research is the event horizon telescope. He also works on the connection of the jet outflows and the feedback processes in active galaxies, primarily using ALMA.
Research Expertise & Interests:
1. Physics of accreting systems powered by black holes.
2. Radio and Optical Interferometry.
3. Total Intensity, Polarisation & Spectral-line observations.
4. Statistical methods.
5. Image & Signal Processing under sparse reconstruction framework
Employment
- 2026 - Present
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Tampere University Postdoctoral Researcher2025 - 2026
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Finnish Center for Astronomy with ESO Postdoctoral Researcher2022 - 2025
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Universidad de Concepción Postdoctoral Researcher2016 - 2021
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Tampereen Teknillinen yliopisto Postdoctoral Researcher2016 - 2016
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Aalto University Metsähovi Radio Observatory D.Sc (Tech)2012 - 2016
Education
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Aalto University Metsähovi Radio Observatory D.Sc (Tech)2012 - 2016
Projects & Funding
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Delineating the physics of supermassive black holes using high angular resolution interferometry CONICYT2019 - 2022
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To understand the physics of shocks at high resolution using the Event Horizon Telescope Magnus Ehrnrooth Foundation2015 - 2016
Publications (53)
- Radio and γ-Ray Activity in the Jet of the Blazar S5 0716+714 Save
- Accretion properties of low‐luminosity active galactic nuclei Save
- Event Horizon Telescope observations of the jet launching and collimation in Centaurus A Save
- Multiwavelength variability and correlation studies of Mrk 421 during historically low X-ray and \ensuremathγ-ray activity in 2015-2016 Save
- Constraints on black-hole charges with the 2017 EHT observations of M87* Save
- The Polarized Image of a Synchrotron-emitting Ring of Gas Orbiting a Black Hole Save
- Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign Save
- First M87 Event Horizon Telescope Results. VII. Polarization of the Ring Save
- First M87 Event Horizon Telescope Results. VIII. Magnetic Field Structure near The Event Horizon Save
- Polarimetric Properties of Event Horizon Telescope Targets from ALMA Save
- VizieR Online Data Catalog: Simultaneous X-ray & gamma obs. of Mrk421 in 2013 (Acciari+, 2020) Save
- Gravitational Test beyond the First Post-Newtonian Order with the Shadow of the M87 Black Hole Save
- Monitoring the Morphology of M87* in 2009-2017 with the Event Horizon Telescope Save
- THEMIS: A Parameter Estimation Framework for the Event Horizon Telescope Save
- Verification of Radiative Transfer Schemes for the EHT Save
- Event Horizon Telescope imaging of the archetypal blazar 3C 279 at an extreme 20 microarcsecond resolution Save
- SYMBA: An end-to-end VLBI synthetic data generation pipeline Save
- Unravelling the complex behavior of Mrk 421 with simultaneous X-ray and VHE observations during an extreme flaring activity in April 2013 Save
- Resolving accretion flows in nearby active galactic nuclei with the Event Horizon Telescope Save
- Outflowing gas in a compact ionization cone in the Seyfert 2 galaxy ESO 153-G20 Save