Bakin rami a tsakiyar Milky Way yakamata ya sake kunnawa bayan hadewa da Cloud Magellanic

Masana sararin samaniya sun yi nuni da cewa Sagitário A*, babban baƙar fata mai girma da ke tsakiyar Via Láctea, ya kasance cikin yanayin ƙarancin aiki na dogon lokaci. Wani sabon bincike ya nuna cewa wannan hoton zai iya canzawa lokacin da Grande Nuvem na Magalhães, wani gungu na dwarf maƙwabta, ya haɗu da galaxy ɗinmu. Taron, wanda aka yi hasashen zai ɗauki kimanin shekaru biliyan biyu, ana sa ran zai harba iskar gas mai yawa zuwa cikin baƙar fata da kuma canza shi zuwa wata cibiyar galactic.

Bakin rami ya tattara tarin yawa daidai da rana miliyan huɗu a cikin yanki mai ƙanƙanta. Ele ya fi shekaru dubu 25 haske nesa ba kusa ba daga Terra, a cikin ƙungiyar taurari Sagitário.

• An tabbatar da abin a matsayin babban rami mai girma ta hanyar lura da ya haifar da Prêmio Nobel na Física a cikin 2020.
• Telescopes kamar James Webb suna ba da gudummawa ga nazarin tsarin galactic mai nisa waɗanda ke taimakawa fahimtar matakai iri ɗaya.
• Simulators na sararin samaniya sun nuna cewa haɗe-haɗe tsakanin taurari masu kama da juna suna canza tsarin tauraron halo da kwararar kayan zuwa tsakiya.

Cikakkun bayanai game da babban rami mai girma

An rarraba Sagittarius A* a matsayin mafi kusancin bakin rami mafi kusa. Sua taro da wuri an kafa su ta hanyar ma’aunin ma’auni na taurari kewaye da shi. Instituto na Astrofísica na Andaluzia yana nuna cewa abu yana da ƙarancin aiki na musamman, wanda ya bambanta shi da mafi haske a cikin sauran taurari.

Abubuwan lura na baya-bayan nan tare da kayan aikin NASA kamar Imaging X-ray Polarimetry Explorer sun gano wani ƙaramin fashewa da ya faru kimanin shekaru ɗari biyu da suka gabata. Esse nau’in taron ya nuna cewa baƙar fata har yanzu yana nuna bambance-bambance, ko da yake akan iyakataccen ma’auni. Astrônomos yi amfani da wannan bayanan don tsara halin abin da ke gaba.

Haɗin galactic na gaba da kwararar abubuwa

Grande Nuvem na Magalhães yana kewayawa Via Láctea kusan shekaru dubu dari biyu da haske. Cálculos dangane da motsinsa na orbital ya nuna cewa a hankali yana rasa kuzari kuma dole ne ya karkata zuwa tsakiyar tauraron mu. Kamata ya yi karon ya faru kusan shekaru biliyan biyu da suka gabata, bisa ga hasashe na yanzu.

A lokacin haɗuwa, sojojin gravitational za su kai gas da ƙura zuwa tsakiyar yankin Via Láctea. Esse ƙarin kayan ya kamata su samar da faifai acretion a kusa da Sagitário A*, mai zafi zuwa miliyoyin digiri. The falling matter can then radiate energy in different bands of the electromagnetic spectrum, making the galactic core more luminous.

Abubuwan da ake tsammani akan tsarin galaxy

Binciken da aka yi akan siminti irin na aikin EAGLE ya nuna cewa haɗakar taurari iri ɗaya na haifar da haɓakar rami na tsakiya. Har ila yau, taurarin halo da kuma rarrabuwar taurarin suna fuskantar gagarumin canje-canje a cikin wannan tsari. Via Láctea ana sa ran yin gyare-gyare yayin da yake ɗaukar dwarf galaxy.

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Masana taurari suna bin tsarin nesa don kwatanta abin da zai iya faruwa a nan. Wani ƙaramin galaxy da aka yi nazari tare da Telescópio Espacial James Webb yana nuna fasaloli waɗanda suka yi kama da farkon farkon juyin halittar galactic. Misalai Esses suna ba da maƙasudai don tsinkaya tasirin hulɗa tare da Magalhães.

Tsaro hangen nesa ga duniya

Nisa na shekaru dubu 26 haske tsakanin Terra da Sagitário A* yana wakiltar babban rabuwa har ma da ma’aunin sararin samaniya. Farfesa Carlos Frenk, Universidade, Durham, ya bayyana cewa cibiyar galactic mai aiki da ke haifar da haɗin kai bai kamata ya isa isashen ikon yin barazana ga rayuwa a duniya ba.

Joseph Michail, Centro, Astrofísica, Harvard da Smithsonian, yana ƙarfafa cewa matakan kariya kamar yanayin duniya, filin maganadisu da Via Láctea zai iya ɗaukar nasu ƙarin radiation. Observadores Na gaba zai iya lura da sararin sama mai haske a cibiyar galactic, ba tare da wani tasiri kai tsaye akan tsarin hasken rana ba.

Abubuwan lura da ke goyan bayan yanayin

Astrophysics Nathalie Degenaar na Universidade na Amsterdã yayi bayanin cewa faɗuwar abubuwa a kusa da ramukan baƙar fata na iya haifar da hayaƙin da ake iya ganowa a tsawon magudanar ruwa. Dados da aka tattara ta na’urorin hangen nesa daban-daban na tushen ƙasa da na sararin samaniya suna ci gaba da daidaita ƙira game da halayen Sagitário A*.

Babban bincike kan wannan karo na gaba an buga shi a cikin mujallar Monthly Notices na Royal Astronomical Society. Equipes Masu bincike na duniya sun haɗu da simintin ƙididdiga tare da ainihin abubuwan lura don taswirar matakan hulɗar galactic. Ƙoƙarin Esses yana ba da damar ƙarin ingantattun ƙididdiga na lokaci da tasirin taron.

Baƙin rami a tsakiyar Via Láctea yana ci gaba da kulawa da kayan aiki da yawa. Embora cikakken farkawa ana hasashen zuwa nan gaba mai nisa, nazarin yanzu yana ba da fayyace fahimi kan yadda taurari ke tasowa ta hanyar haɗuwa. Matsakaicin halin yanzu na Sagitário A* ya bambanta da yuwuwar babban aiki wanda aka yi hasashen haduwar sararin samaniya.