Description

A new theory suggests Sagittarius A* might not be a black hole after all.
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A new theory is challenging everything we know about Sagittarius A, the supermassive object at the heart of our galaxy. For decades, physicists have been certain it’s a black hole. They have observed its effects and even built a planet-sized telescope just to image it. But now, a mind-bending theory is turning our understanding upside down. What if Sagittarius A isn’t a black hole at all, but something far stranger?



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0:00 Sagittarius A*
1:44 Supermassive Black Hole
6:51 Not a Black Hole?
7:49 The Black Hole Problem
9:36 Dark Matter Core
11:23 What Is Dark Matter?
13:36 Dark Fermions
17:06 The Rotation Problem
18:49 Event Horizon Telescope
21:33 Photon Ring
23:16 More Evidence



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References:
“Imaging Fermionic Dark Matter Cores”, via oup.com https://astrumspace.info/fermiondm
“Stars Orbiting a Dark Matter Compact Object”, via oup.com https://astrumspace.info/starsdm
“Discovery of Sgr A*”, via arxiv.org https://astrumspace.info/sgra
“Astronomers Reveal First Image of the Black Hole at the Heart of Our Galaxy”, via eventhorizontelescope.org https://astrumspace.info/ehtimage
“Fast Moving Stars in S2 Orbit”, via iop.org https://astrumspace.info/s2orbit
“The Nobel Prize in Physics 2020”, via nobelprize.org https://astrumspace.info/nobel2020
“Stellar Orbits Around Central Black Hole”, via arxiv.org https://astrumspace.info/stellarorbits
“Elementary Fermions”, via nih.gov https://astrumspace.info/fermions
“Keplerian Decline in the Milky Way Rotation Curve”, via arxiv.org https://astrumspace.info/keplerian
“Collapse of Dark Matter Cores into Supermassive Black Holes”, via arxiv.org https://astrumspace.info/dmcollapse



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Credits:
Writer: Patricia Ward
Video Editor: Suhith
Audio Editor: James Horsley
Researcher: Shourya Shrivastava
Script Editor: Damaris McColgan
Thumbnail Designers: Peter Sheppard, Juane Dames
Publishing Lead: Georgina Brenner
Production Coordinator: Rose Unwin
Edit Producer: Poppy Pinnock
Head of Astrum: Jess Jordan
Creator of Astrum: Alex McColgan



With special thanks to:
Valentina Crespi
Dr Carlos R ArgĂĽelles
Institute of Astrophysics La Plata, Argentina
NASA/ESO/ESA



#Astrum #Space #BlackHole