Le James-Webb révèle la composition du gaz autour d’un trou noir supermassif

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

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

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

Waiting to find out, let us be patient taking note of some results already obtained, such as those related to the famous Stephan Quintet, a visual grouping of five galaxies located in the constellation Pegasus but of which only four are truly gravitationally associated, with the fifth galaxy simply in the foreground of the other four. This last gate NGC number 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 that belong to the same set and encode an identical protein or…” data-image=”https://cdn.futura-sciences.com/buildsv6/ images/midioriginal/8/b/5/8b5b655a33_110693_mission-cluster-esal.jpg” data-url=”https://news.google.com/sciences/definitions/astronautics-cluster-544/” data-more= “Read more”>clusters of stars
o NGC — in French “New General Catalog of nebulae and lots ofstars », which we owe initially to John Louis Emil Dreyer (1852 – 1926), a astronomer Irish-Danish.

Spectra tell about NGC 7319’s black hole environment

With the JWST, the astrophysicists focused on the case of NGC 7319 which hosts an active galactic nucleus whoseEnergy luminous equivalent to 40 billion The Sun is the closest star to Earth, from which it is distant about 150 million kilometers. The Sun is 8.5 kparsecs from the center of the Milky Way. In stellar classification, the sun is a G2-type star.
The mass…” data-image=”https://cdn.futura-sciences.com/buildsv6/images/midioriginal/1/d/9/1d9cd1d45f_50034577_eruption.jpg” data-url=”https://news. google.com/sciences/definitions/univers-soleil-3727/” data-more=”Read more”>Suns it comes from a supermassive black hole of 24 million solar masses: ours From Earth, we can only observe a cross section…” data-image=”https://cdn.futura-sciences.com/ buildsv6/images/midioriginal /7/7/7/777b761907_120668_voie-lactee-galaxie.jpg” data-url=”https://news.google.com/sciences/definitions/universe-voie-lactee-3729/” data- more=”Read more “>Milky Way contains one, Mrs*a little more than 4 million solar masses.

For their curriculum, they drew on the spectrometer to medium resolution (MRS) which is part of the mid-infrared instrument (I looked) from James-Webb. MRS contains an image generator and a spectrographthat allowed to observe and carry out measurements related to the gas closer than ever to the central black hole of NGC 7319. 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=”https://cdn.futura-sciences.com/buildsv6/images/midioriginal/4/e/9/4e957f8c38_92834_sable.jpg” data- url= “https://news.google.com/planet/definitions/geology-sand-6009/” data-more=”Read more”>sand beach but much smaller than a grain of sand.

From them spectral are shown in the image above.

The spectrum at the top shows a region filled with hot, ionized gases, containing mostly ironGeneral
Symbol: ArAtomic number: 18Electrons per energy level: 2, 8, 8Atomic mass: 39.948 uMost stable isotopes: stable 36Ar with 18 neutrons (0.336%), stable 38Ar…” data-image=”https:// cdn. future-sciences.com/buildsv6/images/midioriginal/d/c/1/dc149640eb_72760_argoncc-01.jpg” data-url=”https://news.google.com/sciences/definitions/chemistry-argon-14769 /” 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=”https://cdn.futura-sciences.com /buildsv6 /images/ midioriginal/c/f/a/cfa47a2952_50037812_netube-02.jpg” data-url=”https://news.google.com/sciences/definitions/chemistry-neon-14510/” data-more=” Read 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=”https://cdn.futura-sciences.com /buildsv6 /images /midioriginal/a/1/f/a1f6134b6a_50083739_bloc-soufre-gaznaturel-g-mckenna-flickr.jpg” data-url=”https://news.google.com/sciences/definitions/chimie-sulfur- 14521/ ” 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=”https://cdn.futura-sciences.com/buildsv6/images/ midioriginal/4 / 7/d/47dc2cafaf_59586_rust-screw.jpg” data-url=”https://news.google.com/sciences/definitions/chemistry-oxygen-798/” data-more=”Read More”>oxygenAs indicated by the peaks in wavelengths data. The presence of multiple lines ofissue of the same element, with different degrees ofionizationit is valuable for understanding the properties and origins of plasma flows around the black hole.

Meanwhile, the lower spectrum reveals that the supermassive black hole is associated with a reservoir of cooler, denser gas with large amounts of
Symbol: H Atomic Number:…” data-image=”https://cdn.futura-sciences.com/buildsv6/images/midioriginal/3/8/8/38807f95a1_50010101_equinoxprom-eit-big.jpg” data-url =”https://news.google.com/sciences/definitions/chemistry-hydrogen-14495/” data-more=”Read more”>hydrogen molecular and silicate powders that absorb white light
The wavelengths of visible light range from 380nm (violet) to 780nm (red). The visible spectrum is…” data-image=”https://cdn.futura-sciences.com/buildsv6/images/midioriginal/b/6/9/b697a0c09f_85912_lumiere.jpg” data-url=”https:// news.google.com/sciences/definitions/physics-light-326/” data-more=”Read more”>light central regions of the galaxy.

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