Free Astronomy Magazine May-June 2024 ARABIC VERSION

N Astronomers measure heaviest black hole pair ever found byNOIRLab − JosieFenske early every massive galaxy hosts a supermassive black holeatitscenter.Whentwo galaxies merge, their black holes can form a binary pair, meaning they are in a bound orbit with one another. It’s hypothesized that these binaries are fated to eventu- allymerge,butthishasneverbeen observed. The question of whether such an event is possible has been a topic of discussion amongst as- tronomersfordecades.Inarecently published paper in The Astrophysi- calJournal ,ateamofastronomers have presented new insight into this question. The team used data fromtheGeminiNorthtelescopein Hawai’i, one half of the Interna- tional Gemini Observatory oper- atedbyNSF’sNOIRLab,whichis 34 ﻣﺠﻠﺔ FreeAstronomy ﺎﻟﻌﺮ ﺔ ﻋﻠﻤﺎء اﻟﻔﻠﻚ ﻘ ﺴﻮن أﺛﻘﻞ ﺛﻘﺐ أﺳﻮد ﺗﻢ اﻛﺘﺸﺎﻓ ﮫ : ﻘﻠﻢ ﺟﻮزيﻓ ﻨﺴﻜﻲ - ﻣﺨﺘ ﻧﻮﻳﺮﻻب - ﻣﺎﻳﻮ ﻳﻮﻧﻴﻮ 2 0 2 4 ﺗﺴﺘﻀ ﻒ ﻛﻞ ﻣﺠﺮة ﺿـﺨﻤﺔ ﺗﻘﺮﻳﺒـﺎً ﺎً ﺛﻘﺒـ ا اُ ﻫـﺎﺋﻼً ﺳـﻮد ﰲ ﻣﺮﻛﺰﻫـﺎ . ﻋﻨـﺪﻣﺎ ﺗﻨ ـﺪﻣﺞ ﻳﻤ ﻣﺠﺮﺗﺎن ﻜﻦ أن ﻳﺸﻜﻞ ﺛﻘﺒﺎﻫﻤﺎ اﻷﺳـﻮدان ﺎً زوﺟ ﺛﻨﺎﺋﻴﺎً ﻣﻤﺎ ﻳﻌﻨﻲ أﻧﻬﻤﺎ ﰲ ﻣـﺪار ﻣﺤـﺪد ﻣﻊ ﺑﻌﻀﻬﻤﺎ . ﻣﻦ ا ﻔﱰض أن ﻫﺬه اﻟﺜﻨﺎﺋﻴﺎت ﻣﺤﻜﻮم ﻋﻠﻴﻬﺎ أن ﺗﻨﺪﻣﺞ ﰲ اﻟﻨﻬﺎﻳﺔ، ﻟﻜﻦ ﻫﺬا ﻟﻢ ﻳﺘﻢ رﺻﺪه . ﺎً ﻘﻣﻄﻠ ﻟﻘﺪ ﻛﺎﻧﺖ ا ﺴﺄﻟ ﺔ ﻣﺎ إذا ﻛﺎن ﻣﺜﻞ ﻫﺬا اﻟﺤﺪث ﺎً ﻣﻤﻜﻨ ﺎً ﻣﻮﺿﻮﻋ ﻟﻠﻨﻘﺎش ﺑـ ﻋﻠﻤـﺎء اﻟﻔﻠـﻚ ﻌﺪة ﻟ ﻋﻘﻮد ﻣﻦ اﻟﺰﻣﻦ . ﰲ ورﻗـﺔ ﺑﺤﺜﻴـﺔ ﻧـ ـ ﴩت ﻣـﺆﺧﺮا ﰲ ﻣﺠﻠـﺔ ــــــــ اﻟﻔﻴﺰﻳﺎء اﻟﻔﻠﻜﻴﺔ، ﻗﺪم ﻓﺮﻳﻖ ﻣﻦ ﻋﻠﻤﺎء اﻟﻔﻠﻚ رؤﻳﺔ ﺟﺪﻳﺪة ﻟﻬﺬا اﻟﺴﺆال . اﺳـﺘﺨﺪم اﻟﻔﺮﻳـﻖ ﺑﻴﺎﻧﺎت ﻣﻦ ﺗﻠﺴﻜﻮب ﺟﻴﻤ ﻴﻨﻲ ﻧﻮرث ﰲ ﻫﺎواي وﻫﻮ ﺟﺰء ﻣﻦ ﻣﺮﺻﺪ ﺟﻴﻤﻴﻨـﻲ اﻟـﺪوﱄ اﻟـﺬي ﻳﺪﻳﺮه ﻣﺨﺘﱪ ﻧﻮﻳﺮﻻب ﺑﺘﻤﻮﻳﻞ ﻣـﻦ ﻣﺆﺳﺴـﺔ اﻟﻌﻠﻮم اﻟﻮﻃﻨﻴﺔ اﻷﻣﺮﻳﻜﻴﺔ ﻟﺘ ـ ﺤﻠﻴﻞ ﺛﻘﺐ أﺳﻮد