Représentation d'un trou noir avec son disque d'accrétion et un jet d'énergie. © Nasa, Caltech-JPL

The James-Webb reveals the composition of gas around a supermassive black hole

Stephan’s Quintet, a visual grouping of five galaxies located in the constellation Pegasus, was among the first images chosen to illustrate the power of the James-Webb Space Telescope in comparison with that of its predecessor, Hubble. But the JWST not only makes it possible to take sumptuous images, it also performs spectroscopic analyzes revealing the chemical composition of stars and astrophysical environments. We see an example with one of the supermassive black holes associated with the galaxies of the Stephan Quintet.

The James-Webb is still only at the very beginning of its observations and it is already giving spectacular results. We even wonder if he is not providing us with elements to decide the dark matter theory of the Mond theory in cosmology.

While waiting to find out, let’s be patient while taking note of certain results already obtained, such as those concerning the famous Stephan Quinteta visual grouping of five galaxies located in the In Greek mythology, Pegasus was a winged horse…” data-image=”” data-url=”” data-more=”Read more”>pegasus constellation but of which only four are truly gravitationally associated, the fifth galaxy being simply in the foreground of the other four. This last gate the number At the end of the 19th century, the development of astronomical instruments and nascent astrophotography had made it possible to discover…” data-image=” /2/9/8/2986702f33_50035262_ngc-01.jpg” data-url=”” data-more=”Read more”>NGC 7320 among the New General Catalog of Nebulae and The Cluster in Genetics
In genetics, a gene cluster corresponds to a group of at least two genes belonging to the same set and coding for an identical protein or…” data-image=” buildsv6/images/midioriginal/8/b/5/8b5b655a33_110693_mission-cluster-esal.jpg” data-url=”” data-more= “Read more”>Clusters of Stars
or NGC — in French “New general catalog of nebulae and piles ofstars », which we owe initially to John Louis Emil Dreyer (1852 – 1926), a astronomer Irish-Danish.

Specters talk about the environment of the black hole of NGC 7319

With the JWST, the astrophysicists focused on the case of NGC 7319 which houses an active galactic nucleus whoseenergy luminous equivalent to 40 billion The Sun is the closest star to the Earth, from which it is about 150 million kilometers away. The Sun is located 8.5 kparsecs from the center of the Milky Way. In star classification, the sun is a G2 type star.
The mass…” data-image=”” data-url=”https://news.” data-more=”Read more”>suns comes from a supermassive black hole of 24 million masses solar — our From Earth, only a cross-section can be observed…” data-image=” 777b761907_120668_milkyway-galaxy.jpg” data-url=”” data-more=”Read more”>Milky Way contains one, Srg A*a little over 4 million solar masses.

For their curriculum, they relied on the spectrometer to medium resolution (MRS) which is part of the mid-infrared instrument (Miri) of the James-Webb. MRS contains an imager and a spectrographwhich made it possible to observe and make measurements concerning the gas closer to the central black hole of NGC 7319 than ever before. The instrument revealed that the black hole was enveloped in silicate dust whose composition is similar to artificial sand
Sand can also be obtained artificially, by…” data-image=”” data- url=”” data-more=”Read more”>sand of beach but much smaller in size than grains of sand.

Of them spectra were shown in the image above.

The spectrum in the upper part shows a region filled with hot and ionized gases, notably containing ironGeneral
Symbol: ArAtomic number: 18Electrons per energy level: 2, 8, 8Atomic mass: 39.948 uMost stable isotopes: 36Ar stable with 18 neutrons (0.336%), 38Ar stable…” data-image=”https://” data-url=” /” data-more=”Read more”>argonGeneral
Symbol: Ne Atomic number: 10 Electrons per energy level: 2.8 Atomic mass: 20.1797 u Most stable isotopes: 20 Ne stable…” data-image=” /images/midioriginal/c/f/a/cfa47a2952_50037812_netube-02.jpg” data-url=”” data-more=”Read the more”>neonGeneral
Symbol: S Atomic number: 16 Electrons per energy level: 2, 8, 6 Atomic mass: 32,065 u Most stable isotopes: 32 S…” data-image=” /midioriginal/a/1/f/a1f6134b6a_50083739_bloc-soufre-gaznaturel-g-mckenna-flickr.jpg” data-url=”” data -more=”Read more”>sulfur and General
Symbol: ON Atomic Number: 8 Electrons per Energy Level: 2.6 Atomic Mass: 15,999 u Most stable isotopes…” data-image=” /7/d/47dc2cafaf_59586_rust-screw.jpg” data-url=”” data-more=”Read more”>oxygenas indicated by the peaks at wavelengths data. The presence of several lines ofemission of the same element, with different degrees ofionizationis valuable for understanding the properties and origins of plasma flows around the black hole.

The lower spectrum, meanwhile, reveals that the supermassive black hole is associated with a cooler, denser reservoir of gas with large amounts of
Symbol: H Atomic number:…” data-image=”” data-url =”” data-more=”Read more”>hydrogen molecular and silicate dusts which absorb white light
Visible light wavelengths range from about 380 nm (violet) to 780 nm (red). The visible spectrum is…” data-image=”” data-url=”https://” data-more=”Read more”>light central regions of the galaxy.

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