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APOD

Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

See Explanation. Clicking on the picture will download the highest resolution version available.

M87's Energetic Jet

Explanation: An energetic jet from the core of giant elliptical galaxy M87 stretches outward for 5,000 light-years. This monstrous jet appears in the panels above to be a knotted and irregular structure, dectected across the spectrum , from x-ray to optical to radio wavelengths. In all these bands , the observed emission is likely created as high energy electrons spiral along magnetic field lines, so called synchrotron radiation . But what powers this cosmic blowtorch? Ultimately, the jet is thought to be produced as matter near the center of M87 swirls toward a spinning, supermassive black hole. Strong electromagnetic forces are generated and eject material away from the black hole along the axis of rotation in a narrow jet. Galaxy M87 is about 50 million light-years away and reigns as the large central elliptical galaxy in the Virgo cluster .

Date November 1, 2001
Credit Credit: X-ray: H. Marshall (MIT), et al., CXC , NASA
Radio: F. Zhou, F. Owen ( NRAO ), J. Biretta ( STScI)
Optical: E. Perlman ( UMBC ), et al., STScI, NASA
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.