Video: Lub teeb quasar yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A quasar (/ˈkwe?z?ːr/) (tseem hu ua quasi-stellar object abbreviated QSO) yog ib qho luminous active galactic nucleus (AGN), uas lub qhov dub loj heev uas muaj huab hwm coj los ntawm ntau lab mus rau billions lub sij hawm qhov loj ntawm Lub hnub yog surrounded los ntawm ib tug gaseous acretion disk.
Tsis tas li ntawd, dab tsi yog quasar yooj yim txhais?
A quasar yog qhov kaj nruab nrab ntawm lub galaxy, ntseeg tau tias muaj lub zog los ntawm lub qhov dub loj heev. Lo lus " quasar " yog muab los ntawm quasi-stellar xov tooj cua, vim hais tias hom khoom no yog thawj zaug pom tias yog hom xov tooj cua. Quasars tseem hu ua quasi-stellar objects (QSOs).
Tsis tas li ntawd, lub quasar ci li cas? Tus tshiab nrhiav tau super- ci quasar yog catalog li J043947. 08+163415.7. Nws ci nrog lub teeb sib npaug rau 600 trillion hnub, los ntawm qhov deb 12.8 billion light-years from Earth.
Dhau li ntawm no, quasar zoo li cas?
Cov khoom ntuj ceeb tsheej mysterious hu ua quasars yog ib co ntawm cov khoom ci tshaj plaws hauv peb lub qab ntuj khwb. Quasars Qhov tseeb yog cov galaxies nrog lub qhov dub muaj zog ntawm lawv cov chaw, nqus cov teeb meem thiab ntuav tawm gouts ntawm x-rays uas tsim kom muaj huab cua loj heev.
Dab tsi ua rau quasar?
A quasar Cov ntaub ntawv thaum cov khoom poob rau hauv cov khoom siv pov tseg nyob ib ncig ntawm lub qhov dub supermassive ntawm qhov chaw ntawm lub galaxy.
Pom zoo:
Lub teeb sib tham txog tej yam ntuj tso thiab manmade qhov chaw ntawm lub teeb yog dab tsi?
Tej qhov chaw ntawm lub teeb muaj xws li lub hnub, hnub qub, hluav taws, thiab hluav taws xob nyob rau hauv cua daj cua dub. Tseem muaj qee cov tsiaj thiab nroj tsuag uas tuaj yeem tsim lawv tus kheej lub teeb, xws li fireflies, jellyfish, thiab nceb. Qhov no hu ua bioluminescence. Artificial light yog tsim los ntawm tib neeg
Dab tsi yog qhov txawv ntawm wavelength ntawm lub teeb liab thiab lub teeb violet?
Violet lub teeb yog hluav taws xob hluav taws xob hluav taws xob nrog wavelengths ntawm 410 nanometers thiab lub teeb liab muaj awavelength ntawm 680 nanometers. Qhov ntau ntawm wavelengths (400 - 700 nm) ntawm lub teeb pom kev yog nyob nruab nrab ntawm lub electromagnetic spectrum (Fig.1)
Qhov txawv ntawm lub teeb dawb thiab lub teeb dub yog dab tsi?
Dub tsuas yog qhov tsis muaj lub teeb, vim tias nws tsis nyob los yog vim nws tau nqus thiab tsis pom. Yog li hu ua 'dub teeb' tsuas yog ultra-violetlight, uas yog lub teeb zoo tib yam (electromagneticradiation) uas yog siab tshaj qhov pom spectrum. Lub teeb twg hu ua lub teeb dawb?
Dab tsi yog qhov teeb meem ntawm lub teeb nyob rau hauv lub ntuj hmo ntuj hu ua?
Gegenschein, tseem hu ua Counterglow, oval thaj ntawm faint luminosity raws nraim rau lub hnub nyob rau hauv lub hmo ntuj. Lub thaj ntawm lub teeb yog li faint nws tuaj yeem pom tsuas yog thaum tsis muaj lub hli, nyob deb ntawm lub nroog teeb, thiab nrog lub qhov muag yoog rau qhov tsaus ntuj
Kev sib raug zoo ntawm lub teeb thiab teeb meem yog dab tsi?
Lub teeb thiab teeb meem cuam tshuam rau ib leeg hauv ntau txoj hauv kev. Kev sib cuam tshuam ntawm lub teeb thiab teeb meem txiav txim siab qhov tshwm sim ntawm txhua yam nyob ib puag ncig peb. Lub teeb cuam tshuam nrog cov teeb meem xws li emission thiab nqus. Cov nyhuv photoelectric yog ib qho piv txwv ntawm qhov teeb meem absorbs lub teeb