Nyanzvi dzemitumbi yomudenga dzinodavira kuti rinenge boka renyeredzi riri rose rine buri dema guru pakati paro, nharaunda yechadenga yakakora zvokuti hapana chinowira mariri, kunyange chiedza, chinogona kupukunyuka. Pamwoyo yedu, iyo Milky Way, pane zvakare imwe. Inonzi Sagittarius A *, nekuda kwenzvimbo yayo muSagittarius renyeredzi. Uye, kana zvese zvikafamba zvinoenderana nehuwandu hwe 'madziva' esainzi, mumaawa mashoma tichaona mufananidzo wake kekutanga nekuda kwekuedza kweChiitiko Horizon Telescope kana Chiitiko Horizon Telescope (EHT nechidimbu chayo muChirungu), Chikwata chepasi rose chinoumbwa nemazana maviri evazivi venyeredzi vacharatidza "revolutionary results" yavo pane iyi 'monster' iri pakati penyeredzi yedu.
Inowanikwa 26.000 light years kubva kuZuva, Sagittarius A* inorema zvakanyanya: huremu hwayo hwakaenzana nemamiriyoni mana ezuva. Yakaonekwa mukupera kwema90 nevazivi venyeredzi kubva kuMax Planck Institute for Extraterrestrial Physics muGarching (Germany) neYunivhesiti yeCalifornia, nekuda kwekukwezva kwainoita kune nyeredzi dziri pedyo munzvimbo imwe chete yechadenga, ichidzidhonza nekumhanya giddy. . Reinhard Genzel wekuGermany uye wekuAmerica Andrea Ghez vakagashira Mubairo weNobel muFizikisi muna 2020 nokuda kwekuwanikwa uku.
Kusvika ikozvino, maitiro emitumbi yakatenderedza Sagittarius A * yanga iri nzira yega yekudzikisira kuvepo kwayo. Mapoka maviri eGenzel neGhez akaronga nemazvo kutenderera kweimwe nyeredzi, S2, iyo yakawana chinhambwe chakatenderedzwa kusvika kuSagittarius A * muna Chivabvu 2018 - isingasviki mabhiriyoni makumi maviri emakiromita (20.000 nguva chinhambwe chiri pakati peZuva nePasi). Chikwata chaitungamirirwa naGenzel chakawana kuti chiedza chakabudiswa nenyeredzi pedyo negomba guru dema rakanga rakatambanudzwa kusvika kureba kwemasaisai, chiitiko chinozivikanwa sekushanduka kwegiravhiti, zvichisimbisa kekutanga hukama hwese hwaEinstein padyo negomba dema guru. Kubva kutanga kwa120, timu yakazivisa kuti yakanga yaona kutamba kweS2020 kutenderedza gomba dema, zvichiratidza kuti kutenderera kwayo kuri muchimiro cherosette, mhedzisiro inonzi Schwarzschild precession yakafanotaurwa naEinstein.
Nyanzvi dzenyeredzi dzakayerawo kufamba kwenyeredzi ina dziri kure dzakapoteredza gomba dema. Mafambiro enyeredzi anoratidza kuti huremu huri pakati peboka renyeredzi hunenge hwakazara neSagittarius A* nyaya, zvichisiya kanzvimbo kadiki kenyeredzi, mamwe maburi matema, gasi renyeredzi neguruva, kana rima.
denderedzwa chimiro
Kazhinji, gomba dema rinenge rakanyarara uye rinoburitsa simba rakapetwa nemabhiriyoni esimba pane mahombe matema ari mune mamwe mapoka enyeredzi. Kukadzi wapfuura, timu yesainzi inotungamirwa naIlje Cho, muongorori weInstitute of Astrophysics yeAndalusia (IAA-CSIC), yakaburitsa bepa mavakanongedza kuti chimiro chemukati cheSagittarius A * chinenge chakatenderera. Kupedzisa, masayendisiti akashandisa nzira yeVLBI, iyo inosanganisira kushandiswa kwakaenderana kwenzvimbo dzakapatsanurwa nhamba dzeteresikopu yeredhiyo, kuitira kuti teresikopu inogadzirwa kubva kure pakati peteresikopu.
