File:Sag A*.jpg

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DescriptionSag A*.jpg	English: Sagittarius A* Imaged by the Event Horizon Telescope
Date	12 May 2022
Source	Astronomers reveal first image of the black hole at the heart of our galaxy (Image link)
Author	EHT Collaboration
Other versions	Original uncompressed TIFF version

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This file, which was originally posted to https://eventhorizontelescope.org/blog/astronomers-reveal-first-image-black-hole-heart-our-galaxy, was reviewed on 13 May 2022 by reviewer Thibaut120094, who confirmed that it was available there under the stated license on that date.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	13:07, 13 May 2022		4,076 × 4,076 (558 KB)	wikimediacommons>Thibaut120094	JPEG file from https://cdn.eso.org/images/large/eso2208-eht-mwa.jpg

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Credit/Provider	EHT Collaboration
Source	European Southern Observatory
Short title	First image of our black hole
Image title	This is the first image of Sgr A, the supermassive black hole at the centre of our galaxy. It’s the first direct visual evidence of the presence of this black hole. It was captured by the Event Horizon Telescope (EHT), an array which linked together eight existing radio observatories across the planet to form a single “Earth-sized” virtual telescope. The telescope is named after the event horizon, the boundary of the black hole beyond which no light can escape. Although we cannot see the event horizon itself, because it cannot emit light, glowing gas orbiting around the black hole reveals a telltale signature: a dark central region (called a shadow) surrounded by a bright ring-like structure. The new view captures light bent by the powerful gravity of the black hole, which is four million times more massive than our Sun. The image of the Sgr A black hole is an average of the different images the EHT Collaboration has extracted from its 2017 observations. In additionto other facilities, the EHT network of radio observatories that made this image possible includes the Atacama Large Millimeter/submillimeter Array (ALMA) and the Atacama Pathfinder EXperiment (APEX) in the Atacama Desert in Chile, co-owned and co-operated by ESO is a partner on behalf of its member states in Europe.
Usage terms	Creative Commons Attribution 4.0 International License
Date and time of data generation	15:07, 12 May 2022
JPEG file comment	This is the first image of Sgr A, the supermassive black hole at the centre of our galaxy. It’s the first direct visual evidence of the presence of this black hole. It was captured by the Event Horizon Telescope (EHT), an array which linked together eight existing radio observatories across the planet to form a single “Earth-sized” virtual telescope. The telescope is named after the event horizon, the boundary of the black hole beyond which no light can escape. Although we cannot see the event horizon itself, because it cannot emit light, glowing gas orbiting around the black hole reveals a telltale signature: a dark central region (called a shadow) surrounded by a bright ring-like structure. The new view captures light bent by the powerful gravity of the black hole, which is four million times more massive than our Sun. The image of the Sgr A black hole is an average of the different images the EHT Collaboration has extracted from its 2017 observations. In addition to other facilities, the EHT network of radio observatories that made this image possible includes the Atacama Large Millimeter/submillimeter Array (ALMA) and the Atacama Pathfinder EXperiment (APEX) in the Atacama Desert in Chile, co-owned and co-operated by ESO is a partner on behalf of its member states in Europe.
Keywords	Milky Way Galactic Centre
Contact information	https://www.eso.org Karl-Schwarzschild-Strasse 2 Garching bei München, None, D-85748 Germany
IIM version	4

File:Sag A*.jpg

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Sagittarius A*

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