Ronald Hesper

Research interests

Publications

• First Sagittarius A* Event Horizon Telescope Results. VIII. Physical Interpretation of the Polarized Ring

  The Astrophysical Journal Letters · 2024 · https://doi.org/10.3847/2041-8213/ad2df1

• The persistent shadow of the supermassive black hole of M 87

  Astronomy and Astrophysics · 2024 · https://doi.org/10.1051/0004-6361/202347932

• First Sagittarius A* Event Horizon Telescope Results. VII. Polarization of the Ring

  The Astrophysical Journal Letters · 2024 · https://doi.org/10.3847/2041-8213/ad2df0

• First M87 Event Horizon Telescope Results. IX. Detection of Near-horizon Circular Polarization

  The Astrophysical Journal Letters · 2023 · https://doi.org/10.3847/2041-8213/acff70

• First Sagittarius A* Event Horizon Telescope Results. VI. Testing the Black Hole Metric

  The Astrophysical Journal Letters · 2022 · https://doi.org/10.3847/2041-8213/ac6756

• First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way

  The Astrophysical Journal Letters · 2022 · https://doi.org/10.3847/2041-8213/ac6674

• First Sagittarius A* Event Horizon Telescope Results. V. Testing Astrophysical Models of the Galactic Center Black Hole

  The Astrophysical Journal Letters · 2022 · 10.3847/2041-8213/ac6672

• First Sagittarius A* Event Horizon Telescope Results. III. Imaging of the Galactic Center Supermassive Black Hole

  The Astrophysical Journal Letters · 2022 · 10.3847/2041-8213/ac6429

• First Sagittarius A* Event Horizon Telescope Results. II. EHT and Multiwavelength Observations, Data Processing, and Calibration

  The Astrophysical Journal Letters · 2022 · 10.3847/2041-8213/ac6675

• First Sagittarius A* Event Horizon Telescope Results. IV. Variability, Morphology, and Black Hole Mass

  The Astrophysical Journal Letters · 2022 · 10.3847/2041-8213/ac6736

• First M87 Event Horizon Telescope Results. VIII. Magnetic Field Structure near The Event Horizon

  The Astrophysical Journal Letters · 2021 · https://doi.org/10.3847/2041-8213/abe4de

• Constraints on black-hole charges with the 2017 EHT observations of M87*

  Physical review. D/Physical review. D. · 2021 · 10.1103/physrevd.103.104047

• First M87 Event Horizon Telescope Results. VII. Polarization of the Ring

  The Astrophysical Journal Letters · 2021 · 10.3847/2041-8213/abe71d

• Event Horizon Telescope imaging of the archetypal blazar 3C 279 at an extreme 20 microarcsecond resolution

  Astronomy and Astrophysics · 2020 · https://doi.org/10.1051/0004-6361/202037493

• Gravitational Test beyond the First Post-Newtonian Order with the Shadow of the M87 Black Hole

  Physical Review Letters · 2020 · 10.1103/physrevlett.125.141104

• First M87 Event Horizon Telescope Results. III. Data Processing and Calibration

  The Astrophysical Journal Letters · 2019 · https://doi.org/10.3847/2041-8213/ab0c57

• First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole

  The Astrophysical Journal Letters · 2019 · https://doi.org/10.3847/2041-8213/ab0ec7

• First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole

  The Astrophysical Journal Letters · 2019 · 10.3847/2041-8213/ab1141

• First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole

  The Astrophysical Journal Letters · 2019 · 10.3847/2041-8213/ab0e85

• First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring

  The Astrophysical Journal Letters · 2019 · 10.3847/2041-8213/ab0f43

• First M87 Event Horizon Telescope Results. II. Array and Instrumentation

  The Astrophysical Journal Letters · 2019 · 10.3847/2041-8213/ab0c96

• The Event Horizon General Relativistic Magnetohydrodynamic Code Comparison Project

  The Astrophysical Journal Supplement Series · 2019 · 10.3847/1538-4365/ab29fd

• Photoemission evidence of electronic stabilization of polar surfaces in K3C60

  Physical review. B, Condensed matter · 2000 · 10.1103/physrevb.62.16046

• Charge transfer and doping-dependent hybridization of C60 on noble metals

  Physical review. B, Condensed matter · 1998 · 10.1103/physrevb.57.11939

• Strongly reduced band gap in a correlated insulator in close proximity to a metal

  Europhysics Letters (EPL) · 1997 · 10.1209/epl/i1997-00442-2

• One-atom point contacts

  Physical review. B, Condensed matter · 1993 · 10.1103/physrevb.48.14721

Current projects

No projects listed.