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Explanation: What causes this unusual structure near the center of our Galaxy? The long parallel rays slanting across the top of the above radio image are known collectively as the Galactic Center Radio Arc and jut straight out from the Galactic plane. The Radio Arc is connected to the Galactic center by strange curving filaments known as the Arches. The bright radio structure at the bottom right likely surrounds a black hole at the Galactic center and is known as Sagittarius A*. One origin hypothesis holds that the Radio Arc and the Arches have their geometry because they contain hot plasma flowing along lines of constant magnetic field. Recent images from the Chandra X-ray Observatory appear to show this plasma colliding with a nearby cloud of cold gas.
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NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Based on Astronomy Picture
Of the Day
Publications with keywords: Galactic Center - Sgr A
Publications with words: Galactic Center - Sgr A
See also:
- APOD: 2024 April 1 Á Swirling Magnetic Field around Our Galaxys Central Black Hole
- Milky Way Rising
- APOD: 2023 April 3 Á The Galactic Center Radio Arc
- The Galactic Center in Radio from MeerKAT
- Road to the Galactic Center
- The Galactic Center in Stars, Gas, and Magnetism
- The Galactic Center in Infrared