EHT Memo Code Title Author(s) Last Updated 2023-L1-02 Absolute Flux Density Calibration of the Greenland TelescopeData for Event Horizon Telescope Observations Koay et al. 17 Jan 2024 2023-L1-01 Metadata for the Flux Density Calibration of the April 2018...
The Event Horizon Telescope (EHT) Collaboration has released new images of M87*, the supermassive black hole at the center of the galaxy Messier 87, using data from observations taken in April 2018. With the participation of the newly commissioned...
In April 2019, scientists released the first image of a black hole in the galaxy M87 using the Event Horizon Telescope (EHT). However, that remarkable achievement was just the beginning of the science story to be told. Data from nineteen observatories are...
EHT Array in 2017 Submillimeter Telescope (SMT), part of the Arizona Radio Observatory (ARO) Atacama Pathfinder EXperiment (APEX) IRAM 30-meter telescope James Clerk Maxwell Telescope (JCMT) Large Millimeter Telescope "Alfonso Serrano" (LMT) Submillimeter...
Very Long Baseline Interferometry (VLBI), the technique used by the EHT to create a virtual Earth-sized dish, has been called the ‘ultimate in delayed gratification’ among astronomers. Radio waves from the edge of a distant supermassive black hole are...
Observational campaigns in both April 2017 and April 2018 were conducted over five observing nights. These data were recorded when the major target sources were optimally observable by night and when the weather was globally best for EHT observations...
The global array of telescopes connected into the Event Horizon Telescope (EHT) was due to start observations at the end of March 2020 in order to expand and enhance the first set of results published approximately one year ago, including the first-ever...
Analysis of the Event Horizon Telescope observations from 2009-2017 reveals turbulent evolution of the M87* black hole image In 2019, the Event Horizon Telescope (EHT) Collaboration delivered the first image of a black hole , revealing M87*—the...
The EHT is an evolving network of telescopes. Observations in April 2017 were carried out with eight observatories in six geographical locations around the globe. For the observing campaign in 2018, one new telescope was added to the array, totalling...
EHT Data Product Code Title Author(s) Last Updated Access Link(s) Reference 2024-D02-01 EHT Sagittarius A* Polarized Data The EHT Collaboration et al. Mar. 27, 2024 CyVerse Data Commons (DOI: 10.25739/k39c-mh27) The Event Horizon Telescope Collaboration...
Depending on instrument setup, weather, position within the array, and other factors, a five-day observing campaign can produce about a Petabyte (PB) of raw data per observatory. The total amount of raw data recorded in April 2017 is about 3.5 PB. This...
Event Horizon Telescope Collaboration scientists use data which produced the first image of a black hole to constrain its fundamental properties. In 2019, the EHT Collaboration published the first image of a black hole located at the centre of the galaxy...
