Quasar

Templeeti:Nature timeline A quasar / / ˈkweɪzɑːr / KWAY - KWAY ) bụ oghere galactic na-arụ ọrụ nke ukwuu (AGN).  A na-akpọ ya mgbe ụfọdụ dị ka ihe na-adaba adaba, nke ese QSO .  Ihe na-esi na AGN na-esi na ya pụta bụ nnukwu oghere nwere oke sitere na nde mmadụ ruo iri puku igwe igwe igwe, nke diski ikuku gbara ya gburugburu.  Gas dị na diski ahụ na-adaba na oghere ojii na-ekpo ọkụ ma na- ike n'ụdị radieshon electromagnetic .  Ike na-ahụ mmetụta nke quasars dị oke;  quasars kasị ike nwere ike ọtụtụ puku ugboro ugboro nke mkpesa dị ka Ụzọ Milky Way .  [1] [2] A na-ekewa Quasars dị ka klaas nke ụdị AGN n'ozuzu ya.  Mgbanwe na-acha uhie nke quasars sitere na mbara igwe

Ihe ngosi nke onye na-ese ihe na diski accretion na ULAS J1120+0641, quasar dị anya na-akwado site na nnukwu oghere ojii nwere ngosipụta okpukpu abụọ nke ọmụmụ.

. Ihe dị ka otu nde quasars ka mgbasara na ha nwere ọrụ redshift spectroscopic a Brand na ya, [1] na n'etiti nde 2-3 mgbasara na katalọgụ photometric .  [2] [3] Quasar kacha nso kacha nso bụ ihe dị ka nde afọ 600 site na ike.  Ihe dị maka quasar kacha dị anya na-aga n'ihu na-agbanwe.  Na 2017, ọhụrụ quasar ULAS J1342 + 0928 na redshift z = 7.54.  Ìhè a ntọala site na quasar nke dị nde 800 nke esere mgbe mu na ụwa dị 690 nde afo.  [4] [5] [6] N'afọ 2020, ikikera quasar Pōniuā'ena site n'oge nanị 700 nde afọ ka Big Bang gachara, yana ọnụ ọgụgụ a na-eme ememe nke 1.5 ijeri ugboro uka nke ike.  [7] [8] Ná ngosi 2021, a kọrọ quasar QSO J0313-1806, nke nwere oghere ojii dị iche iche 1.6 ihuenyo, na z = 7.64, 670. nde afọ ka Big Bang gachara.