Instituto Bafuputsi ba SETI ba phatlalalitse mosebetsi o botsang maano a setso a ho batla bohlale ba mafatše. Boithuto bona, bo lokollotsoeng ho The Astrophysical Journal, bo sekaseka hore na boemo ba leholimo ba sepakapaka ho potoloha linaleli bo ka fetola mats’oao a seea-le-moea a moqotetsane joang pele ba tloha tsamaisong ea bona ea lipolanete.
Ho khopama hona ho etsahala ka lebaka la plasma ea moferefere e hlahisoang ke moea oa linaleli le li-coronal mass ejections, liketsahalo tse tšoanang le tse bonoang ho Sol. Bangoli ba sebelisa lintlha tse tsoang mesebetsing ea khale ho lekanya sephetho le ho sisinya litokiso liphuputsong tse tlang.
Mosebetsi o ne o kenyelletsa setsebi sa linaleli Vishal Gajjar e le sengoli se seholo, hammoho le Grayce C. Brown.
Boemo ba leholimo sebakeng bo ama ho phatlalatsoa ha maqhubu a seea-le-moea
Ketsahalo e khethiloeng e fetola lets’oao le tsepamisitsoeng ka lebelo le nepahetseng ho ba tlhahiso e pharaletseng, e fokolang.
Phetoho ena e etsahala ha lets’oao le feta tikolohong e moferefere e haufi le naleli e tsoang.
Ka lebaka leo, liphatlalatso tse neng li tla tsoa joalo ka li-spikes tse bohale li ka hasana ho pholletsa le maqhubu a mangata, ho etsa hore ho be thata ho li-algorithms tsa hajoale tsa SETI ho nka.
Lintlha tse tsoang ho li-interplanetary probes li netefatsa mohlala
Sehlopha se ile sa hlahloba mats’oao a seea-le-moea a rometsoeng ke mamisio a kang Mariner 4, Pioneer 6, Helios 1, Helios 2 le Viking, e qalileng pakeng tsa 1964 le 1976.
Lintlha tsena li bontšitse hore ho atolosoa ha spectral ho etsahala ha ho tšela bohareng ba lipolanete tsa Sol, ka matla a maholo nakong ea lifefo tsa letsatsi.
Maikutlo a tsoang ho Helios probes, e neng e sebetsa haufi le Sol, e bontšitse hore ho khopama ho eketsa ha pontšo e feta ho naleli.
Ho latela litekanyo tsena tse tobileng, bafuputsi ba ile ba haha litšoantšo bakeng sa litsamaiso tse ling tsa linaleli le lihlopha tse fapaneng tsa maqhubu.
Li-dwarfs tse khubelu li baka phephetso e kholo
Linaleli tsa mofuta oa M, tse tsejoang e le red dwarfs, li etsa hoo e ka bang 75% ea linaleli ho Via Láctea.
Linaleli tsena li nyane, li bata ebile li sebetsa haholo, e leng se etsang hore ho be le maemo ao mats’oao a atolositsoeng a atisang ho hlahella haholoanyane.
Le hoja monyetla oa ho ntša coronal mass ejection e tsamaellanang hantle le phetisetso e tlase, e ka tlase ho 3%, ha e atolosoa e ka ikatisa ka makhetlo a fetang sekete ha e bapisoa le maemo a tloaelehileng.
Maqhubu a phahameng a ka ntlafatsa ho lemoha
Boithuto bona bo khothaletsa ho etelletsa pele maqhubu a seea-le-moea a holimo, moo phello ea plasma ea linaleli e seng ea bohlokoa haholo.
Ho feta moo, e fana ka maikutlo a ho atolosa mekhoa ea ho lemoha ho kenyelletsa matshwao a pharalletseng hanyane a neng a lahliloe pele.
Mokhoa ona o lumella lipatlisiso ho nahana ka se hlileng se fihlang ho Terra ka mor’a ho haola le boemo ba leholimo ba linaleli tse ling.
- Lipontšo tsa megahertz tse 100 li ka atolosoa ho fihla ho 100 hertz tlas’a maemo a tloaelehileng.
- Ho feta 60% ea litsamaiso tse etsisitsoeng, maqhubu a tlase a hlahisa khopamiso e kholo le ho feta.
- Hoo e ka bang 70% ea litsamaiso li baka mollo o bobebe, athe 30% e baka khopamiso e matla le ho feta.
Mekhoa ea ho batla e hloka ho ntlafatsoa
Mekhoa ea setso ea SETI e shebana le litlhoro tse moqotetsane haholo, kaha ho thata ho hlahisa lits’ebetso tsa tlhaho.
Leha ho le joalo, mohlala o mocha o bontša hore matšoao a maiketsetso a ka boomo a ka lahleheloa ke tšobotsi ena ha a tloha tsamaisong e qalang.
Patlisiso ha e rarolle bothata ba Fermi, empa e fana ka mokhoa o thusang ho utloisisa khutso ea bokahohle e bonoang ho fihlela joale.
Lipapiso li supa likarolo tse kholo
Lipalo li bontša hore phello e atolositsoeng e etsahala karolong e kholo ea litsamaiso tsa linaleli.
Tlas’a maemo a hlahlobiloeng, libaka tse ngata tsa linaleli li fetola matšoao hanyenyane, ha karolo e nyenyane e baka liphetoho tse matla haholo.
Liphetho tsena li fumanoe ho tsoa ho hlahisoeng ha lintlha tsa ‘nete tse bokelletsoeng ke batho ho Sistema Solar.
Mosebetsi o kenya letsoho ho ntlafatseng lipatlisiso tsa technosignal, ho li lokisa ho ea ka ‘nete ea sebele ea libaka tsa linaleli. Pesquisadores tsoela pele ho bokella lintlha tse ling ho leka likhakanyo tsa moetso ona litebollong tsa nakong e tlang tsa thelesekoupo ea radio.
