Izazi ngeenkwenkwezi kutshanje ziye zaxela ukufunyanwa kwento ebambekayo emalunga ne-2.35 yobunzima belanga kwiqela leglobula iNGC 1851 kwikhaya lethu. Galaxy Indlela yobisi. Kuba oku kusekupheleni kwe “Umngxunya omnyama mass-gap”, le nto icwengileyo inokuba yi-neutron enkulu Nkwenkwezi okanye eyona ilula Umngxunya omnyama okanye enye into engaziwayo inkwenkwezi. Ubume obuchanekileyo balo mzimba akukacaciswa. Nangona kunjalo, yintoni enomdla ngakumbi kukuba, ngokungafaniyo nomzimba ohlangeneyo ofanayo ofunyenwe kwisiganeko sokudibanisa i-GW 190814, lo mzimba odibeneyo ufunyenwe kwi-binary system formation njengeqabane le-pulsar. Ukuba lo mzimba ohlangeneyo ekubunjweni kokubini kunye ne-pulsar uzimisele ukuba a Umngxunya omnyama kwixesha elizayo, le iya kuba yeyokuqala "ipulsar - Umngxunya omnyama inkqubo” eyaziwayo.
Xa amafutha ephela, inyukliya fusion kwi iinkwenkwezi iyayeka kwaye akukho mandla okufudumeza imathiriyeli ukulinganisa amandla angaphakathi womxhuzulane. Ngenxa yoko, undoqo uwela phantsi komxhuzulane wawo, ushiye ngasemva i-compact intsalela. Esi sisiphelo senkwenkwezi. Inkwenkwezi efileyo inokuba mhlophe qhwa okanye neutron star okanye Umngxunya omnyama kuxhomekeke kubunzima benkwenkwezi yokuqala. Iinkwenkwezi phakathi kwe-8 ukuya kwi-20 ubunzima belanga buphela njengeenkwenkwezi ze-neutron (NSs) ngelixa iinkwenkwezi ezininzi zisiba nzima imingxunya emnyama (iiBH).
Ubuninzi bobunzima be iinkwenkwezi zeneutron imalunga ne-2.2 ubunzima belanga ngelixa imingxunya emnyama Ukwakhiwa ekupheleni komjikelo wobomi beenkwenkwezi ngokuqhelekileyo zingaphezu kwe-5 ubunzima belanga. Lo msantsa uphakathi kwelona khaya limnyama likhaphukhaphu (oko kukuthi 5 M⊙) neyona neutron inzima Nkwenkwezi (oko kukuthi 2.2 M⊙) kubhekiselwa “kwi-black hole mass-gap”.
Izinto ezibambeneyo kwi "Umngxunya omnyama umsantsa omkhulu”
Izinto ezixineneyo eziwela kwi-mass-gap (phakathi kwe-2.2 ukuya kwi-5 ubunzima belanga) aziqhelekanga ukudibana nazo kwaye aziqondwa kakuhle. Ezinye izinto ezixineneyo zibonwe kwi iliza lomxhuzulane imisitho ikummandla we-mass-gap. Omnye umzekelo wamva nje yayikukufunyaniswa kobunzima belanga obuyi-2.6 ngomhla we-14 ku-Agasti ka-2019 kumsitho wokudityaniswa kwe-GW190814 okhokelele kwikhaya elimnyama lomngxunya wokugqibela omalunga nama-25 obunzima belanga.
Izinto ezihlangeneyo kwi-mass-gap kwi-"binary system" yokwakheka
Izazinzulu zisandula ukuxela ukufunyanwa kwento ebambekayo emalunga ne-2.35 yobunzima belanga kwiqela leglobula iNGC 1851 yethu. kumnyele wasekhaya iMilkyway. Kuba oku kusekupheleni kwe “Umngxunya omnyama mass-gap”, le nto icwengileyo inokuba yi-neutron enkulu Nkwenkwezi okanye eyona ilula Umngxunya omnyama okanye enye into engaziwayo inkwenkwezi.
Ubume obuchanekileyo balo mzimba akukacaciswa.
Nangona kunjalo, yintoni enomdla ngakumbi kukuba, ngokungafaniyo nomzimba ohlangeneyo ofanayo ofunyenwe kwisiganeko sokudityaniswa kwe-GW 190814, lo mzimba ohlangeneyo ufunyenwe kwi-binary system formation njengeqabane le-eccentric binary millisecond pulsar.
Ukuba lo mzimba ohlangeneyo ekubunjweni kokubini kunye ne-pulsar uzimisele ukuba a Umngxunya omnyama kwixesha elizayo, le iya kuba yeyokuqala "ipulsar - Umngxunya omnyama inkqubo” eyaziwayo. Oku koko izazi ngeenkwenkwezi zepulsar zijonge amashumi eminyaka.
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Iingxelo:
- LIGO. Ukukhutshwa kweendaba - i-LIGO-Virgo ifumana i-Mystery Object kwi "Mass Gap". Ithunyelwe nge-23 Juni 2020. Ifumaneka apha https://www.ligo.caltech.edu/LA/news/ligo20200623
- E. Barr et al., I-pulsar kwibinary enezinto ezixineneyo kumsantsa phakathi kweenkwenkwezi ze-neutron kunye nemingxuma emnyama yeSayensi, nge-19 kaJanuwari 2024. DOI: https://doi.org/10.1126/science.adg3005 Ukuprintwa kwangaphambili https://doi.org/10.48550/arXiv.2401.09872
- I-Fishbach M., 2024. Imfihlelo kwi "gap mass". ISAYENSI. 18 Jan 2024. Vol 383, Issue 6680. iphepha 259-260. DOI: https://doi.org/10.1126/science.adn1869
- SARAO 2024. Iindaba – Owona mngxuma ukhaphukhaphu omnyama okanye eyona nkwenkwezi ineutron inzima? I-MeerKAT ityhila into engaqondakaliyo kumda ophakathi kwemingxuma emnyama kunye neenkwenkwezi ze-neutron. Ithunyelwe nge-18 kaJanuwari 2024. Iyafumaneka e https://www.sarao.ac.za/news/lightest-black-hole-or-heaviest-neutron-star-meerkat-uncovers-a-mysterious-object-at-the-boundary-between-black-holes-and-neutron-stars/
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