Free Astronomy Magazine September-October 2026 ARABIC VERSION

SEPTEMBER-OCTOBER2026 A hidden starburst galaxy linked to a high-energyneutrino byALMAObservatory Nicolás Lira, Jill Malusky, Bárbara Ferreira stronomers using the Ata- cama Large Millimeter/sub- millimeterArray(ALMA) haverevealedthehiddenstructure of an intensely star-forming galaxy asitappearednearly11billionyears ago. Located in the same patch of sky as a high-energy neutrino de- tectedbytheIceCubeNeutrinoOb- servatory, the galaxy is the most plausible electromagnetic counter- part yet identified for that event. Officially designated JCMT0402−0424 and nicknamed “Shadow Blaster,” the galaxy is so deeply ob-scured by dust that it is nearly invis-ible at optical wavelengths. ALMA observationsshowedthatitslight ﻣﺠﺮة اﻧﻔﺠﺎرﻧ ﻤﻲﻣﺮ ﻄﺔ ﻨﻴﻮﺗﺮ ﻨﻮ ﻋﺎﻟﻲاﻟﻄﺎﻗﺔ : ﻘﻠﻢ ﻧﻴ ﻮﻻس ﻟ ا، ﺟﻴﻞ ﻣﺎﻟﻮﺳﻜﻲ، ﺎر ﺮا ﻓ ﺮا ﻣﺮﺻﺪ ﻣﺼﻔﻮﻓﺔ أﻟﻤﺎ ﻳﻮﺿــــﺢ ــــﺔ ــــﺎﻧﻲ أﻋــــﻼﻩ ﻛ ﻔ اﻟﺮﺳــــﻢ اﻟﺒ ﻋﻤــــﻞ ﺗــــﺄﺛ ﻋﺪﺳــــﺔ اﻟــــ ـ ﺠﺎذﺑ ﺔ إذ ﺗﻘــــﻮم ﻣﺠﺮة ﺿــــ ﻤﺔ ﺟـﺪاً ﺗﻘـﻊ ﻓــﻲ اﻟﻤﻘﺪ ﺜــ ﻣـﺔ ــﺎن اﻟﺰﻣ ﻓﺘﻌﻤــﻞ ــﺔ ﻤﺜﺎ ﻋﺪﺳـــﺔ ﺗﻜﺒـــ ـــﺔ ﻮﻧ ﺗﻜـــ ﺻـــﻮرة ﻣﺠـــﺮة أ ﻌــــــﺪ ﺗﻘـــــــﻊ ﺧﻠﻔﻬـــــــﺎ وﺗﺸــــــﻮﻫﻬﺎ ﻔﻌـــــــﻞ ﺗـــــــﺎﺛ ﺟﺎذﺑ ﺘﻬـــــﺎ اﻟﻬﺎﺋــــــﻞ ﻋﻠــــــﻰ اﻟﻀـــــﻮء اﻟﻘــــــﺎدم ﻣــــــﻦ اﻟﻤﺠﺮة اﻟـﺨﻠﻔ ﺔ . [ALMA Observatory] ﻛﺸـﻒ ﻋﻠﻤـﺎء ﻓﻠ ـﻚ ﺑﺎﺳـﺘ ﺨﺪام ﻣﺼـﻔﻮﻓﺔ أﺗﺎﻛﺎﻣـﺎ ا ﻠﻴﻤﱰﻳـﺔ دون ا ﻠﻴﻤﱰﻳـﺔ اﻟﻜﺒـ ة أ ﺎ) ( اﻟﺒﻨﻴﺔ اﻟﺨﻔﻴـﺔ ﺠـﺮة ﺗﺸـﻬ ﺪ اﻧﻔﺠـﺎر اً ﻫﺎﺋﻼً ﰲ ﺗﻜﻮّن اﻟﻨﺠﻮم ﻛﻤﺎ ﻛﺎﻧﺖ ﻗﺒـﻞ ﻧﺤـﻮ 11 ﻣﻠﻴﺎر ﺳﻨﺔ وﺗﻘﻊ ﻫـﺬه ا ﺠـﺮة ﰲ ﻧﻔـﺲ اﻟﺮﻗﻌﺔ ﻣﻦ اﻟﺴﻤﺎء اﻟﺘﻲ ر ﺻﺪ ﻓﻴﻬﺎ ﻧﻴﻮﺗﺮﻳﻨـﻮ ﻋﺎﱄ اﻟﻄﺎﻗﺔ ﺑﻮاﺳـﻄﺔ ﻣﺮﺻـﺪ آﻳـﺲ ﻛﻴـﻮب ﻟﻠﻨﻴﻮﺗﺮﻳﻨﻮات وﺗ ﻌﺪ ﺣﺘـﻰ اﻵن أﻛﺜـﺮ اﻟﻨﻈـﺎﺋﺮ اﻟﻜﻬﺮوﻣﻐﻨﺎﻃﻴﺴﻴﺔ اﺣﺘﻤﺎﻻً ا ﺮﺗﺒﻄـﺔ ﺑـﺬﻟﻚ اﻟﺤـﺪث . وﺗﺤﻤـﻞ ا ﺠـ ﺮة اﻻﺳـﻢ اﻟﺮﺳـﻤﻲ اﻟﻜﻬﺮوﻣﻐﻨﺎﻃﻴﺴ ﻴﺔ اﺣﺘﻤﺎﻻً ا ﺮﺗﺒﻄـﺔ ﺑـﺬﻟﻚ اﻟﺤــﺪث وﺗﺤﻤ ـﻞ ا ﺠــﺮة اﻻ ﺳـﻢ اﻟﺮﺳــﻤﻲ JCMT0402−0424 ﻛﻤ ـﺎ ﺗ ﻌــﺮف ﺑﺎﻻﺳــﻢ ا ﺴﺘﻌﺎر » ﺷﺎدو ﺑﻼﺳـﱰ « وﻫـﻲ ﻣﺤﺠﻮﺑـﺔ ﺑﺎﻟﻐﺒﺎر إﱃ درﺟﺔ ﺗﺠﻌﻠﻬﺎ ﻏ ﻣﺮ ﺋﻴﺔ ﺗﻘﺮﻳﺒـﺎً ﻋﻨﺪ اﻷﻃـﻮال ا ﻮﺟﻴـﺔ اﻟـ ﺒﴫﻳﺔ ـ وأﻇﻬـﺮت أرﺻﺎد أ ـﺎ ) ﻣﺼﻔﻮﻓﺔ ( أن ﺿـﻮءﻫﺎ ﺗﻌـﺮض ﻟﻠﺘﻜﺒـ واﻟﺘﺸـﻮﻳﻪ ﺑﻔﻌـﻞ ﺟﺎذﺑﻴـﺔ ﻣﺠـﺮة ﺿﺨﻤﺔ ﺗﻘﻊ ﰲ ا ﻘﺪﻣﺔ، ﻣﻤﺎ أدى إﱃ اﻧ ﻘﺴـﺎم ﺻﻮرﺗﻬﺎ إﱃ أرﺑﻊ ﺻﻮر ﻣﻨﻔﺼﻠﺔ . وﻣﻦ ﺧـﻼل - ﺳﺒﺘﻤﺒﺮ ﺃﻛﺘﻮﺑﺮ 2 0 2 6