Lub European Southern Observatory (ESO) tshaj tawm txog kev sau npe ntawm ib qho kev tshwm sim uas nws qhov tseem ceeb los ntawm kev tshawb fawb tsis tuaj yeem kwv yees ntau dhau. Thawj thawj zaug, kev tsim cov khoom hnyav thaum lub sij hawm sib tsoo ntawm cov hnub qub neutron tau sau tseg.
Nws yog lub npe hu hais tias cov txheej txheem thaum lub sij hawm cov ntsiab lus tsim tshwm sim nyob rau hauv lub sab hauv ntawm lub hnub qub zoo tib yam, nyob rau hauv supernova explosions los yog nyob rau hauv lub sab nrauv shells ntawm qub hnub qub. Txawm li cas los xij, kom txog rau thaum tam sim no nws tsis paub meej li cas lub npe hu ua ceev ceev neutrons, uas ua rau cov ntsiab lus hnyav tshaj plaws ntawm lub sij hawm, tshwm sim. Tam sim no qhov sib txawv no tau puv lawm.
Raws li ESO, nyob rau hauv 2017, tom qab kuaj pom gravitational nthwv dej mus txog lub ntiaj teb, lub soj ntsuam tau coj nws lub tsom iav raj ntsia hauv Chile mus rau lawv qhov chaw: lub hnub qub neutron merger site GW170817. Thiab tam sim no, ua tsaug rau X-shooter receiver ntawm ESO's Very Large Telescope (VLT), nws muaj peev xwm tsim kom muaj cov ntsiab lus hnyav tau tsim thaum lub sijhawm zoo li no.
"Tom qab qhov xwm txheej GW170817, ESO lub nkoj ntawm lub koob yees duab tau pib saib xyuas qhov tsim kho kilonova flare hla ntau lub wavelengths. Tshwj xeeb, cov koob ntawm kilonova spectra los ntawm ultraviolet mus rau thaj tsam ze-infrared tau txais siv X-shooter spectrograph. Twb tau thawj zaug kev tshuaj xyuas ntawm cov spectra no tau pom tias muaj cov kab ntawm cov ntsiab lus hnyav hauv lawv, tab sis tam sim no tsuas yog cov kws tshawb fawb muaj peev xwm txheeb xyuas cov ntsiab lus ntawm tus kheej, "ESO tshaj tawm hais tias.
Nws muab tawm tias strontium tau tsim los ntawm kev sib tsoo ntawm neutron hnub qub. Yog li, qhov "tsis muaj qhov txuas" nyob rau hauv qhov kev xav ntawm kev tsim cov tshuaj lom neeg tau sau.
Tau qhov twg los: 3d xov.ru