Injongo ye-ESA's PROBA-3, ethe yaphakama kwirokethi ye-ISRO's PSLV-XL nge-5 kaDisemba 2024, "kukwenza ukukhanya kwelanga" kukwenziwa kwesathelayithi ezimbini zeocculter kunye ne-coronagraph spacecrafts. Iya kwenza ukuba kubonwe i-corona yelanga ngesiphekepheke se-coronagraph iiyure ezi-6 kwiyure nganye ye-19 yemizuzu engama-36 ngokujikeleza ngokuyilwa okufunekayo kokusithwa kwelanga yinyanga yi-occulter spacecraft yokwakheka. Njengombonakaliso wobuchwephesha bokubhabha, i-PROBA-3 mission ivula indlela ye-LISA ye-interferometry-based mission yexesha elizayo (eya kuba yinkqubo ye-spacecrafts ezintathu kwindawo) ukuze kubonwe amaza aphantsi obunzima (GWs).
I-Laser Interferometer Space Antenna (i-LISA) mission eyafumana i-ESA iqhubela phambili ekuqaleni kwalo nyaka kwaye icwangciselwe ukuqaliswa ngo-2035, iya kuba yindawo yokuqala yokuhlola i-gravitational wave esekelwe ekuboneni nasekufundeni amaza aphantsi obunzima (GWs) kunye Ukuphindaphinda phakathi kwe-0.1 mHz kunye ne-1 Hz (okanye i-millihertz ripples) okubangelwa ukugqwetheka kwilaphu lexesha lesithuba ngaphesheya indalo iphela. Iya kuba liqela leenkwenkwezi zeziphekepheke ezithathu ngendlela echanekileyo yokwakheka kukanxantathu olinganayo esithubeni. Icala ngalinye likanxantathu liya kuba yi-2.5 yezigidi zeekhilomitha ubude. Ukwenziwa kweziphekepheke ezithathu ziya kujikeleza iLanga kwi-earth-trailing heliocentric orbit phakathi kwama-50 kunye nama-65 ezigidi zeekhilomitha ukusuka eMhlabeni ngelixa kugcinwa umgama ophakathi wokwahlula phakathi kweziphekepheke ozizigidi ezi-2.5 km.
Uthumo lwe-LISA luya kwakha phezu kwezinto ezimbini eziphambili - "ukubonwa kwamaza okuxhuzula okuphantsi kwisithuba" kunye "nokwakheka okuchanekileyo okubhabha esikhaleni". Ngelixa itekhnoloji efunekayo "kwi-low-frequency gravitational monitoring in space" yavavanywa kwinqwelomoya kwaye yaboniswa yi-LISA Pathfinder mission ngexesha le-2015-2017, itekhnoloji "yokwenziwa ngokuchanekileyo kokubhabha esikhaleni" isanda kuboniswa nge-5 kaDisemba 2024 nge. "itotali yokusithwa kwelanga yinyanga-ukwenza ulwakhiwo lwesathelayithi ezimbini zePROBA-3 yobuthunywa" engena kwi-elliptical orbit. Iphakame kwirokethi ye-ISRO's PSLV-XL.
I-PROBA (Iprojekthi ye-On-Board Autonomy) -i-3 mission ye-European Space Agency (ESA) ineenjongo ezimbini eziphambili: ukubonakaliswa kobuchwephesha bokubhabha, kunye nokufunda kwe-corona yangaphakathi yelanga.
I-PROBA-3 yeyokuqala "indlela echanekileyo yokwakheka ngokubhabha". Kukusekwa kweziphekepheke ezimbini: i-occulter kunye ne-coronagraph. Eyangaphambili (oko kukuthi, isiphekepheke se-Occulter) siphosa isithunzi esilawulwa ngokuchanekileyo kwisiphekepheke seCoronagraph ukuvelisa umnyama welanga xa ufuneka kwiiyure ezintandathu ngexesha, oko kuvumela ukubonwa kwecorona ebuthathaka kakhulu yelanga. I-spacecrafts ezimbini ekubunjweni zihlukaniswe ngumgama weemitha ezili-150 ngokuchaneka kweemilimitha ezimbalwa. Ulwakhiwo oluchanekileyo olubhabhayo lweeyunithi ezizimeleyo emajukujukwini lunkqubela phambili olubalulekileyo kubuchwepheshe bendawo evula ithuba lemishini emitsha efana ne-interferometry-based LISA mission yokubhaqa amaza aphantsi obunzima bokuxhuzula (GWs) esithubeni esingenakubhaqwa kusetyenziswa izixhobo ezibonwa emhlabeni. ezifana ne-LIGO, VIRGO, njl njl okanye iPulsar Timing Arrays (PTAs).
Ngelixa ukubunjwa kweenqwelo-moya ezithathu kwimishini ye-LISA kuya kwenza umlinganiselo (nge-laser interferometry) yotshintsho oluncinci kakhulu kumgama ophakathi kobunzima bovavanyo kwiziphekepheke ezibangelwa yimisinga yomxhuzulane, ukubunjwa kweenqwelo-moya ezimbini kwi-PROBA -3 mission yenzelwe ukuba kube lula ukujonga I-corona yelanga ngesiphekepheke se-coronagraph iiyure ezi-6 kwiyure nganye ye-19h yemizuzu engama-36 ijikeleza ngokuyilwa kwemfuno yokusithwa kwelanga yinyanga ngumlingo. i-spacecraft yokwakheka.
Izehlo zendalo zokusithwa kwelanga yinyanga aziboneleli ngamathuba aneleyo okubona umoya ongaphandle welanga kungoko ithuba lemfuno elibonelelwe yiPROBA-3 liya kuba luncedo kakhulu ekufundeni i-corona yelanga kunye neziganeko ezinxulumene nokuqikelela ngcono kwemozulu yendawo kunye nezaqhwithi zelanga ezaziwa ngokuba phazamisa iisathelayithi, iziseko zonxibelelwano kunye nothungelwano lwamandla eMhlabeni.
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Iingxelo:
- ESA. Iproba –3: Ukwakheka okuchanekileyo kubhabha ukujonga i-corona yeLanga. Ifumaneka e https://www.esa.int/Enabling_Support/Space_Engineering_Technology/Proba-3
- ESA. I-Eclipse-making double satellite iProba-3 ingena kwi-orbit. 5 Disemba 2024. Iyafumaneka e https://www.esa.int/Enabling_Support/Space_Engineering_Technology/Proba-3/Eclipse-making_double_satellite_Proba-3_enters_orbit
- ESA. Iimfihlakalo zesithuba ezintlanu Proba-3 ziya kunceda ukusombulula.Ifumaneka apha https://www.esa.int/Science_Exploration/Space_Science/Five_space_mysteries_Proba-3_will_help_solve
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Amanqaku afanelekileyo
- I-LISA Mission: Isixhobo esisekwe kwisithuba seGravitational Wave sifumana i-ESA phambili (9 February 2024)
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