Free Astronomy Magazine November-December 2024 ARABIC VERSION

Earth, increasing the resolution of their ground-based observations calledforadifferentapproach.An- otherwaytoincreasetheresolution ofatelescopeistoobservelightof a shorter wavelength — and that’s what the EHT Collaboration has now done. “With the EHT, we saw the first im- ages of black holes using the 1.3- mm wavelength observations, but the bright ring we saw, formed by light bending in the black hole’s gravity, still looked blurry because wewereattheabsolutelimits of how sharp we could make the images,” saidthestudy’sco-lead Alexander Raymond, previously a postdoctoral scholar at the Center for Astrophysics | Harvard &Smith- sonian(CfA),andnowattheJet Propulsion Laboratory, both in the United States. “At 0.87 mm, our im- ages will be sharper and more de- tailed,whichinturnwilllikely ﻈﻬــﺮ ﻫــﺬا اﻟﺮﺳـــﻢ اﻟﺘﺨ ﻠـــﻲ ﻣﻮاﻗـــﻊ ـــﺔ ﻣﺘﻌـــﺪدة ﻋــ اﻟ ﻮﻛـــﺐ ﻣﺮاﺻــﺪ رادﻳﻮ ﺷـــﺎرﻛﺖ ﻓــﻲ ﺗﺠﺮـــﺔ ﺗ واﻟـــ ـــﺔ أﺟﺮاﻫـــﺎ ﻣﺸــﺮوع ﺠﺮ ﺒ ﺗﻠﺴـــ ﻮب ا ﻔ ﻨـــﺖ ﻫـــﻮراﻳﺰون ﺣﺼـﻞ ﻋﻠــﻰ اﻟﺘﻌــﺎوﻧﻲ اﻟــﺬ ــﺔ اﻟ أرﺻــﺎد ﻋﺎﻟ ﺪﻗــﺔ ﻣــﻦ اﻷرض . اﻛﺘﺸــﻔﺖ اﻷرﺻــﺎد ــﺔ اﻟﺘﺠﺮ ﺒ ــﺪة ﻄــﻮل ﻣــﻮﺟﻲ اﻟﻀــﻮء ﻣــﻦ اﻟﻤﺠــﺮات اﻟ ﻌ 0.87 ﻣــﻢ وﺗـﻢ إﺟﺮاؤﻫــﺎ ﺎﺳـﺘﺨﺪام ﻌــﺾ اﻟﻤﺮاﺻـﺪ ) ــﺎﻟﻠﻮن اﻷ ﻤـﺮ ( ﺗﻌـﺪ ﺟــﺰءًا ﻣـﻦ ﻣﺸــﺮوع اﻟــ ﺗﻠﺴـ ﻮب ا ﻔ ﻨــﺖﻫـﻮراﻳﺰو ن ـ ــﻢ اﻷرض ﺗﻘﺮ وﻫــﻮ ﺗﻠﺴـ ﻮب ﺑﺤ . ﺎً اﻟﻤﺠــﺮات ﺗﻈﻬــﺮإﺣـﺪ اﻟ ﻌ ﺪة ﺗﺸ ﮫ اﻟﻨﻘﻄﺔ ﻓﻲ أﻋﻠﻰ اﻟ اﻟ ﺴﺎر وﻫﻲ ﺗﺮﺳﻞ إﺷﺎرات رادﻳﻮ ﺔ ﻧﺤﻮ اﻷرض ]. ESO/M.Kornmesser [ وﺳﻤﻴﺜﺴــﻮﻧﻴﺎن " ﺑﺎﺳــﺘﺨﺪام ﺗﻠﺴــﻜﻮ ب اﻳﻔﻴﻨ ـﺖ ﻫــﻮراﻳﺰون رأﻳﻨ ـﺎ اﻟﺼــﻮر اﻷوﱃ ﻟﻠﺜﻘﻮب اﻟﺴﻮداء ﺑﺎﺳﺘﺨﺪام أرﺻﺎد اﻟﻄـﻮل ـــــ ا ﻮﺟﻲ 1.3 ﻣﻢ ﻟﻜﻦ اﻟﺤﻠﻘﺔ اﻟﺴﺎﻃﻌﺔ اﻟﺘﻲ رأﻳﻨﺎﻫﺎ واﻟﺘﻲ ﺗﺸﻜﻠﺖ ﻣﻦ اﻧﺤﻨﺎء اﻟﻀﻮء ﰲ ﺟﺎذﺑﻴﺔ اﻟﺜﻘﺐ اﻷﺳﻮد ﻻ ﺗﺰال ﺗﺒﺪو ﺿـﺒﺎﺑﻴﺔ ـ ﻗﺎل ا ﺸﺎرك اﻟﺮﺋ ـ ﻴﴘ ﰲ اﻟﺪراﺳﺔ أﻟﻜﺴﻨﺪر راﻳﻤﻮﻧﺪ ﺑﺎﺣﺚ ﻣﺎ ﺑﻌﺪ اﻟـﺪﻛﺘﻮراه ﺳـﺎﺑﻘ ﰲ ﺎً ﻣﺮﻛ ــﺰ اﻟﻔﻴﺰﻳـــﺎء اﻟﻔﻠﻜﻴ ــﺔ ﻫﺎرﻓ ــﺎرد ــــــــــــــــــ ﻧﻮﻓﻤﺒﺮ - ﺩﻳﺴﻤﺒﺮ 2 0 2 4