Astrophysicists observed three consequential matter eruptions from a supermassive black hole at the center of NGC 5813 — a group of galaxies 105 million light years away from Earth.
A galaxy group is similar to a galaxy cluster but usually consists of 50 or less galaxies, whereas a cluster can comprise thousands of them.
Astronomers used the Chandra X-ray Observatory — NASA's flagship X-ray telescope — to conduct the longest study of a galaxy group ever: the research took over a week.
The study suggested that the center of galaxy group NGC 5813 contains a supermassive black hole, whose spin, "coupled with gas spiraling toward the black hole, can produce a rotating, tightly wound vertical tower of magnetic field that flings a large fraction of the inflowing gas away from the vicinity of the black hole in an energetic, high-speed jet", NASA explained.
The jets generate shock waves pushing the gas, heated to millions of degrees, outside, and carve out so-called "cavities", or "bubbles". During the latest observation, the astrophysicists detected the third pair of those "cavities", which is the biggest quantity of pairs of "cavities" in a cluster or a group of galaxies ever found. The "bubbles" are drifting away from the black hole similarly to a bubble that rises to the water's surface. The observed "bubbles" can preserve a stable state for up to 50 million years.
Studying the characteristics of the three pairs, the researchers calculated that the formation of the last pair of "cavities" took less energy than the two older pairs. The scientists deduced an inference that the eruption of matter still occurs at the center of NGC 5813. This means the center of NGC 5813 influences both the group of galaxies itself and its neighbors, too.
The study also supports the theory that supermassive black holes really derail the star formation process in many galaxies: the "bubbles" collide with cold clouds of gas (material for star formation) and therefore prevent them from entering galaxies. That is why half of all big galaxies in the Universe are giant "graveyards" of stars.
The fact of registration and authorization of users on Sputnik websites via users’ account or accounts on social networks indicates acceptance of these rules.
Users are obliged abide by national and international laws. Users are obliged to speak respectfully to the other participants in the discussion, readers and individuals referenced in the posts.
The websites’ administration has the right to delete comments made in languages other than the language of the majority of the websites’ content.
In all language versions of the sputniknews.com websites any comments posted can be edited.
A user comment will be deleted if it:
does not correspond with the subject of the post;
promotes hatred and discrimination on racial, ethnic, sexual, religious or social basis or violates the rights of minorities;
violates the rights of minors, causing them harm in any form, including moral damage;
contains ideas of extremist nature or calls for other illegal activities;
contains insults, threats to other users, individuals or specific organizations, denigrates dignity or undermines business reputations;
contains insults or messages expressing disrespect to Sputnik;
violates privacy, distributes personal data of third parties without their consent or violates privacy of correspondence;
describes or references scenes of violence, cruelty to animals;
contains information about methods of suicide, incites to commit suicide;
pursues commercial objectives, contains improper advertising, unlawful political advertisement or links to other online resources containing such information;
promotes products or services of third parties without proper authorization;
contains offensive language or profanity and its derivatives, as well as hints of the use of lexical items falling within this definition;
contains spam, advertises spamming, mass mailing services and promotes get-rich-quick schemes;
promotes the use of narcotic / psychotropic substances, provides information on their production and use;
contains links to viruses and malicious software;
is part of an organized action involving large volumes of comments with identical or similar content ("flash mob");
“floods” the discussion thread with a large number of incoherent or irrelevant messages;
violates etiquette, exhibiting any form of aggressive, humiliating or abusive behavior ("trolling");
doesn’t follow standard rules of the English language, for example, is typed fully or mostly in capital letters or isn’t broken down into sentences.
The administration has the right to block a user’s access to the page or delete a user’s account without notice if the user is in violation of these rules or if behavior indicating said violation is detected.