Free Astronomy Magazine September-October 2025 ARABIC VERSION

T New clues about gamma-rayburstsjets byIAC RamónGarcíaLópez AliciaLópezOramas Juan Cortina heinternationalCTAOLSTCol- laboration,inwhichtheInsti- tuto de Astrofísicade Canarias (IAC) plays a prominent role, re- leased remarkable findings from observations of GRB 221009A—the brightestgamma-rayburst(GRB) everrecorded.Theresultswerepub- lished by the renowned journal The Astrophysical Journal Letters (ApJ Letters).Thepublicationpresentsin- depth observations conducted in 2022 with the Large-Sized Telescope (LST)prototype,theLST-1,during its commissioning phase at the Roque de los Muchachos Observa- tory (ORM) on the CTAO-North site in La Palma, Spain. The observations revealed a hint of an excess in the gamma-rayflux,whichhelpprovide newinsightsintotheenigmaticand SEPTEMBER-OCTOBER2025 ﻣﺠﻠﺔ FreeAstronomy ﺎﻟﻌﺮ ﺔ 22 أدﻟﺔﺟﺪ ﺪةﺣﻮل ﻧﻔﺎﺛﺎت اﻧﻔﺠﺎرات أ ﺎﻣﺎ ﺷﻌﺔ ﻏ : ﻘﻠﻢ راﻣﻮن ﻏﺎرﺳ ﺎ ﻟﻮﺑ أﻟ ﺴ ﺎ ﻟﻮﺑ أوراﻣﺎس ﺧﻮان ﻮر ﻨﺎ ﻣﻌﻬﺪ اﻟﻔ ﺎء اﻟﻔﻠﻜ ﺔ ﻓﻲﺟﺰر اﻟﻜﻨﺎري أﺻـﺪر اﻟﺘﻌﺎون اﻟﺪوﱄ ﰲ اﻟﺘﻠﺴـﻜﻮب اﻟﻜﺒـ اﻟﺘــﺎﺑﻊ ﺮﺻــﺪ ﻣﺼــﻔﻮﻓﺔ ﺗﻠﺴــﻜﻮﺑﺎت ﺷ ﻳﻨﻜﻮف اﻟﺬي ﻳﻠﻌﺐ ﻓﻴﻪ ﻣﻌﻬـﺪ ا ﻟﻔﻴﺰﻳـﺎء اﻟﻔﻠﻜﻴﺔ ﰲ ﺟﺰر اﻟﻜﻨـﺎري دور اً اً ﺑـﺎرز ﻧﺘـﺎﺋﺞ ﻬﻤﺔ ﻣ ﻣﻦ ﻋﻤﻠﻴﺎت رﺻﺪ اﻧﻔﺠﺎر أﺷﻌﺔ ﻏﺎﻣـﺎ GRB 221009A - أ ﻊ اﻧﻔﺠﺎر أﺷـﻌﺔ ﻏﺎﻣـﺎ ـــ ﻋﲆ اﻹﻃﻼق ﻧ. ﴩت ﻫـﺬه اﻟﻨﺘـﺎﺋﺞ ﰲ ﻣﺠﻠـﺔ رﺳﺎﺋﻞ اﻟﻔﻴﺰﻳﺎء اﻟﻔﻠﻜﻴﺔ ا ﺮﻣﻮﻗﺔ . وﻛﺸـﻔﺖ ﻋﻦ ﻋﻤﻠﻴﺎت رﺻﺪ ﻣﺘﻌﻤﻘﺔ أُﺟﺮﻳﺖ ﻋﺎم 2022 ﺑﺎﺳﺘﺨﺪام اﻟﻨﻤـ ﻮذج اﻷوﱄ ﻟﻠﺘﻠﺴـﻜﻮب ﻛﺒـ اﻟﺤﺠﻢ LST) (LST-1 ﺧﻼل اﻟ ﻣﺮﺣﻠﺔ ﺘﺸﻐﻴﻞ ﰲ ﻣﺮﺻﺪ روﻛﻲ دي ﻟـﻮس ﻣﻮﺗﺸﺎﺗﺸـﻮس ﰲ ــــ ﻣﻮﻗﻊ ا ﺼﻔﻮﻓﺔ ﰲ اﻟﻨﺼـﻒ اﻟﺸـﻤﺎﱄ ﻟﻠﻜـﺮة اﻷرﺿﻴﺔ ﰲ اﻻ ﻻﺑﺎ ﺎ ﺟﺰﻳﺮة . ﺔ ﺳـﺒﺎﻧﻴ ﻛﺸـﻔﺖ ﻋﻤﻠﻴﺎت اﻟﺮﺻﺪ ﻋﻦ وﺟـﻮد ﻓـ ﺎﺋﺾ ﰲ ﺗـﺪﻓﻖ أﺷﻌﺔ ﻏﺎﻣﺎ ﻣﻤﺎ ﻳ ﺴﻬﻢ ﰲ ﺗﻘﺪﻳﻢ رؤى ﺟﺪﻳـﺪة ﺣﻮل اﻟﻄﺒﻴﻌﺔ اﻟﻐﺎﻣﻀـ ﺔ ﻹ ﻧﻔﺠـﺎرات أﺷـ ﻌﺔ ﻏﺎﻣﺎ ﻋﻨﺪ ﻃﺎﻗﺎت ﻋﺎﻟﻴﺔ ﺟﺪ . اً ﺳﺒﺘﻤﺒﺮ - ﺃﻛﺘﻮﺑﺮ 2 0 2 5