![]() ![]() Scientists had previously seen stars orbiting around something invisible, compact and very massive at the center of the Milky Way. ![]() The image is a long-anticipated look at the massive object that sits at the very center of our galaxy. The EHT team’s results are published in a special issue of the Astrophysical Journal Letters. “To take part in this historic EHT campaign and unveil the supermassive black hole in our Galactic backyard - Sgr A* - is an amazing scientific achievement and a great testament to the brilliance of the human mind.” “The resulting dataset will have amazing legacy value to the accretion physics community, while the image of the black hole itself is a sight to behold,” Reynolds said. It’s the first direct visual evidence of the presence of this black hole. The dark central region, or “shadow,” surrounded by a ring of glowing gas is a telltale signature. This is the first image of Sagittarius A* (or Sgr A* for short), the supermassive black hole at the center of the Milky Way galaxy. For the 2017 EHT campaign, his team used NASA’s Neil Gehrels Swift Observatory to carry out a dense monitoring campaign - measuring the emission many times during the EHT observation window - of Sgr A* at X-ray wavelengths in order to measure potential X-ray flaring activity from the black hole. This team ensured that the emission from the black hole was observed at all wavelengths at the same time as the EHT. Reynolds was involved in the research as part of the multi-wavelength team, a group of scientists making observations at multiple wavelengths, such as radio, infrared, X-ray and gamma ray. The image was produced by a global research team called the Event Horizon Telescope Collaboration, using observations from a worldwide network of radio telescopes. ![]()
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