Focus on First Sgr A* Results from the Event Horizon Telescope
WEBThe lower mass and, hence, shorter dynamical scale of Sgr A* introduced significant complexity to the imaging and analysis of these EHT data (Papers II, III, and IV). The orbital period at the innermost stable circular orbital is 30 minutes or less, significantly shorter than the 12-hour observation we would ideally use to obtain an Earth ...
Astronomers Unveil Strong Magnetic Fields Spiraling at the Edge …
WEBMariafelicia De Laurentis, EHT Deputy Project Scientist and professor at the University of Naples Federico II, Italy, said, “The fact that the magnetic field structure of M87* is so similar to that of Sgr A* is significant because it suggests that the physical processes that govern how a black hole feeds and launches a jet might be universal ...
Astronomers snap first-ever image of supermassive black hole ...
WEBMay 12, 2022 · “Sgr A* is changing over minutes, so the data is jumping all over the place,” says EHT collaboration member Vincent Fish, a research scientist at Haystack. “That’s the fundamental challenge in imaging this black hole.” Akiyama, who led the EHT’s imaging team, developed a new algorithm to pair with those used to image M87*.
Sagittarius A* Revealed - The Current
WEBMay 12, 2022 · The Event Horizon Telescope (EHT) Collaboration has created a single image (top frame) of the supermassive black hole at the center of our galaxy, called Sagittarius A* (or Sgr A* for short), by combining images extracted from the EHT observations. The main image was produced by averaging together thousands of images created using different ...
Sagittarius A*: NASA Telescopes Support Event Horizon Telescope …
WEBMay 12, 2022 · The researchers also managed to catch X-ray flares — or outbursts — from Sgr A* during the EHT observations: a faint one seen with Chandra and Swift, and a moderately bright one seen with Chandra and NuSTAR. X-ray flares with a similar brightness to the latter are regularly observed with Chandra, but …
Sagittarius A*: 1st photo of Milky Way black hole in images | Space
WEBOn May 12, 2022, scientists unveiled the first-ever image of Sagittarius A*, the supermassive black hole at the center of our Milky Way galaxy. The historic image of Sagittarius A* (or Sgr A* for ...
[2311.08680] First Sagittarius A* Event Horizon Telescope Results. I ...
WEBNov 15, 2023 · We present the first Event Horizon Telescope (EHT) observations of Sagittarius A* (Sgr A$^*$), the Galactic center source associated with a supermassive black hole. These observations were conducted in 2017 using a global interferometric array of eight telescopes operating at a wavelength of $λ=1.3\\,{\\rm mm}$. The EHT data resolve a compact emission region with intrahour variability. A ...
Image of Sgr A*, the black hole at the center of our galaxy
WEBMay 10, 2022 · Sgr A* was challenging to view because, while it is 4 million times more massive than our sun, it is considered small in the world of black holes. It is also surrounded by fast-moving gas, and each view is partially obscured because of other objects in our galaxy passing through the viewing path. ... (EHT) Collaboration created a single image ...
Second black hole image unveiled, first from our galaxy
WEBMay 12, 2022 · “For Sgr A*, you have a toddler running around and you’re trying to get their portrait with the long-exposure camera. You’re just going to get a bunch of blur everywhere.” In addition, there is a giant cloud of ionized gas between Earth and the Galactic Center, which distorts the images the EHT takes of Sgr A,* which sits in central ...
First Sagittarius A* Event Horizon Telescope Results. I ... - IOPscience
WEBMay 12, 2022 · The American Astronomical Society (AAS), established in 1899 and based in Washington, DC, is the major organization of professional astronomers in North America.Its membership of about 7,000 individuals also includes physicists, mathematicians, geologists, engineers, and others whose research and educational interests lie within the broad spectrum of subjects comprising contemporary astronomy.
Skip to content