Friday , April 16 2021

Giant galaxy around the giant black hole



This image of the NASA Spacecraft Space Telescope displays the entire M87 galaxy in infrared light. In contrast, the EHT image relied on light in radio wavelengths and showed the black hole shadow against the background of the high energy material around it.

Located about 55 million light-years from Earth, the M87 has been the subject of astronomical studies for more than 100 years and has been filmed by many NASA observatories, including the Hubble Space Telescope, Handra Observatory of Handra and NuSTAR. In 1918, astronomer Heber Curtis for the first time spotted a "curious blank beam" stretching from the center of the galaxy. This light-weight aircraft with high-energy material, produced from the disc of a fast-revolving material around the black hole, is visible in more wavelengths of light than radio waves through X-rays. When the particles in the jet affect the interstellar medium (a rare material that meets the space between the stars in the M87), they create a shock wave that radiates with infrared and radio wavelengths of light, but no visible light. In the image of Spitzer, the shock wave is more pronounced than the plane itself.

The illuminated plane, which is located to the right of the center of the galaxy, travels almost directly to Earth. Its brightness is amplified due to its high speed in our direction, but more so because scientists call it "relativistic effects" that occur because the material on the plane moves near the speed of light. The plane's trajectory is slightly complemented by our line of sight with respect to the galaxy, so we can still see part of the plane's length. The shock wave begins around the point where the jet is curved downward, emphasizing the regions where moving particles collide with gas in the galaxy and amuse themselves.

The second plane, however, moves so fast away from us that the relativistic effects make it invisible at all wavelengths. But the shock wave it creates in the interstellar medium can still be seen here.

Located on the left side of the center of the galaxy, the shock wave looks like an inverted letter "V." Until it is visible in optical images, the lobe can be seen in radio waves, as shown in this picture by the numerous observatory of National Radio Astronomy.

By combining observations in infrared, radio waves, visible light, X-rays and extremely energetic gamma rays, scientists can study the physics of these powerful planes. Scientists are still striving for a solid theoretical understanding of how gas is drawn into black holes creating outbound planes.

Infrared light at wavelengths of 3.4 and 4.5 microns is represented by blue and green, showing the distribution of the stars, while the dust characteristics that shine a light with 8.0 microns are shown in red. The picture was made during the initial "cold" mission of Spitzer.

The Laboratory for Motor Drive in Pasadena, California, manages the Space Telescope Space Spacecraft for the NASA Scientific Mission in Washington. Scientific operations are carried out at the Spitzer Science Center at Caltech in Pasadena. Space operations are based on Space Systems at Locked Martin in Littleton, Colorado. The data is archived in the Infrared Scientific Archives housed in IPAC in Caltech. Caltech manages JPL for NASA.

More information about Spitzer can be found on its website: http://www.spitzer.caltech.edu/

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