in the media landscape in recent years and despite the mysteries that still surround them and touch on very deep questions of theoretical physics, they are widely considered in astrophysics and in astrophysics . We even study theirs They propagate at the speed of light and carry energy. We can compare them…” data-image=”https://cdn.futura-sciences.com/buildsv6/images/midioriginal/f/4/c/f4c81d66a7_86131_ligo-fusion-trou-noir-ligo-nsf-aurore -simonnet.jpg” data-url=”https://news.google.com/sciences/definitions/physics-gravitational-wave-4003/” data-more=”Read more”> on the occasion of collisions with others Here is a list of celestial objects that can be called celestial bodies (no…” data-image=”https://cdn.futura-sciences.com/buildsv6/images/midioriginal / 6/c /c/6cc6562b02_127395_astre-c-esa-hubble-nasa.jpg” data-url=”https://news.google.com/sciences/definitions/etoile-astre-851/” data-more=”Read more”> relativistic compacts. Lately, what the actual definition of a black hole is when it is a closed surface.
but doubting their presence in certain corners of the earth, only a cross-section can be observed…” 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”> and are becoming increasingly difficult to justify. What beginning in the 1960s when only a handful of visionaries, such as took out these solutions However, it also brings a new notion of space and time in which gravity becomes a geometric property of…” data-url=”https://news.google.com/sciences/definitions/physics-relativity-general- 3572/” data-more=”Read more”> even seriously Not.
The first contenders for the title of black hole, however, were washed out in the 1970s in the form of one
The result of that…” data-image=”https://cdn.futura-sciences.com/buildsv6/images/midioriginal/f/6/7/f678fd3677_50035322_eboulement-cmic-blog-cc-nc-2.jpg ” data-url=”https://news.google.com/planete/definitions/sustainable-development-landfall-6515/” data-more=”Read more”> gravity of a probably at least 30 Solar rays, was also a strong source of X-rays through accretion of organic matter, nitrogenous matter, etc.
There are different families like:
organic matter representing living beings (animal or plant) or…” data-image=”https://cdn.futura-sciences.com/buildsv6/images/midioriginal/e/7/0/e70ccaaf4a_91935_matiere. jpg” data-url=”https://news.google.com/sciences/definitions/matiere-matiere-15841/” data-more=”Read more”>from its companion star.
This matter, as it spirals towards the black hole, actually forms a compact disk in which viscous frictional forces act between the spiralsneighboring surfaces emit heat, physicists refer to heat as thermal energy. In the international system, it is therefore measured in joules (J). Heat more closely corresponds to a transfer…” data-image=”https://cdn.futura-sciences.com/buildsv6/images/midioriginal/7/3/5/735709801b_92578_chaleur.jpg” data-url=” https :/ /news.google.com/sciences/definitions/physics-heat-15898/” data-more=”Read more”> to the generation of a bright, hot plasma in the X-ray range.
Black holes are among the most opaque objects in the universe. Luckily, however, they are among the most attractive and we can recognize them by their overpowering attraction. Giant black holes are the most monstrous ogres in the cosmic zoo, but they are not weapons of mass destruction. The jets of matter they produced would have helped ignite the first stars and form the first galaxies. Hubert Reeves and Jean-Pierre Luminet, specialists in contemporary cosmology, will answer all your questions. To learn more, visit the website. © ECP Group, YouTube
However, we know that most stars form binary systems, so we have to assume that there are a certain number of themin the Milky Way. However, it is also possible for a stellar black hole to be so far away from its companion star that no appreciable transfer of material takes place. So no hard drive and also no X-rays, because the star has not yet become one, for example which has expanded until it overflows the so-called Roche lobe, named after the mathematician and French 19th centurye Century.
The first apex of a population of dormant black holes to appear
This type of stellar black hole is said to ”and so far none had been discovered. That has just changed thanks to an international team of astronomers who used the Flames instrument for their discovery (Fiber Large Array Multi-Element Spectrograph) on the 1993, ESO launched the VLT (Very Large Telescope) project and decided to install it at the Cerro Paranal site in the Chilean Andes, where the climate is particularly favorable for astronomical observations. It…” data-image=”https://cdn.futura-sciences.com/buildsv6/images/midioriginal/f/0/7/f073110cb2_50034377_vlt.jpg” data-url=”https://news.google .com/sciences/definitions/universe-vlt-2147/” data-more=”Read more”> of’ as the researchers explain in an article published in .
To do this, they had to focus the VLT’s gaze on thethe tarantula is in the , a neighboring galaxy of our own. Six years of observations were required for the team led by Tomer Shenar, who started this research at KU Leuven in Belgium and is now a Marie Curie fellow at the University of Amsterdam in the Netherlands.
The candidate for the title of dormant black hole has been dubbed VFTS 243. It contains at least nine times the mass of our earth. The sun is the closest star to the earth, from which it is about 150 million kilometers away. The Sun is 8.5 kParsecs from the center of the Milky Way. In the 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”> and revolves around a hot blue star 25 times the mass of the Sun. Remarkably, it is not accompanied by conspicuous traces of the remains of an explosion from Excerpt from…” data-image=”https://cdn.futura-sciences.com/buildsv6/images/midioriginal/a/9 /4 /a940132305_50034136_supernova1987a.jpg ” data-url=”https://news.google.com/sciences/definitions/universe-supernova-60/” data-more=”Read more”> (Slightly more precise I’ almost roundand the kinematics of VFTS 243 implies that the collapse of the progenitor star in athe black hole was associated with little or no ejected matter) suggesting that a gravitationally collapsing star can sometimes become a black hole directly without going through the supernova stage.
” The star that formed VFTS 243’s black hole appears to have collapsed completely, with no evidence of a previous explosionexplains Tomer Shenar in an ESO statement, adding: Evidence for this “direct collapse” scenario has surfaced recently, but our study provides arguably one of the most direct clues. This has huge implications for the formation of the melting point of water, which is the temperature at which ice melts…” data-image=”https://cdn.futura-sciences.com/buildsv6/images/midioriginal/ 7/d /0/7d0df59f3c_82086_fusion.jpg” data-url=”https://news.google.com/sciences/definitions/physics-fusion-15305/” data-more=”Read more”>Black holes in the cosmos. »
For a fairly accurate French translation, click the white rectangle at the bottom right. Then the English subtitles should appear. Then click on the nut to the right of the rectangle, then on “Subtitles” and finally on “Translate automatically”. Choose French. © European Southern Observatory (ESO)
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