no code implementations • 11 Oct 2023 • Aviad Levis, Andrew A. Chael, Katherine L. Bouman, Maciek Wielgus, Pratul P. Srinivasan
One proposed mechanism that produces flares is the formation of compact, bright regions that appear within the accretion disk and close to the event horizon.
no code implementations • CVPR 2022 • Aviad Levis, Pratul P. Srinivasan, Andrew A. Chael, Ren Ng, Katherine L. Bouman
In this work, we propose BH-NeRF, a novel tomography approach that leverages gravitational lensing to recover the continuous 3D emission field near a black hole.
1 code implementation • 19 Mar 2018 • Andrew A. Chael, Michael D. Johnson, Katherine L. Bouman, Lindy L. Blackburn, Kazunori Akiyama, Ramesh Narayan
Closure-only imaging provides results that are as non-committal as possible and allows for reconstructing an image independently from separate amplitude and phase self-calibration.
Instrumentation and Methods for Astrophysics High Energy Astrophysical Phenomena
1 code implementation • 3 Nov 2017 • Katherine L. Bouman, Michael D. Johnson, Adrian V. Dalca, Andrew A. Chael, Freek Roelofs, Sheperd S. Doeleman, William T. Freeman
Most recently, the Event Horizon Telescope (EHT) has extended VLBI to short millimeter wavelengths with a goal of achieving angular resolution sufficient for imaging the event horizons of nearby supermassive black holes.
1 code implementation • 3 Nov 2017 • Michael D. Johnson, Katherine L. Bouman, Lindy Blackburn, Andrew A. Chael, Julian Rosen, Hotaka Shiokawa, Freek Roelofs, Kazunori Akiyama, Vincent L. Fish, Sheperd S. Doeleman
By linking widely separated radio dishes, the technique of very long baseline interferometry (VLBI) can greatly enhance angular resolution in radio astronomy.
Instrumentation and Methods for Astrophysics
1 code implementation • 19 May 2016 • Andrew A. Chael, Michael D. Johnson, Ramesh Narayan, Sheperd S. Doeleman, John F. C. Wardle, Katherine L. Bouman
Polarimetric MEM is thus an attractive choice for image reconstruction with the
Instrumentation and Methods for Astrophysics Astrophysics of Galaxies