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   talk.origins      Evolution versus creationism (sometimes      142,579 messages   

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   Message 141,465 of 142,579   
   erik simpson to All   
   God's first words   
   08 Sep 25 17:03:18   
   
   From: eastside.erik@gmail.com   
      
   It may be that God's first words of creation were "Let there be light,   
   and also black holes.   
      
   JWST observations of one of the "Little red dots" seems to something   
   pretty close to a naked black hole that is just beginning to accumulate   
   material the make stars.  One of the possibilities is a primordial black   
   hole (one that formed very soon (~ seconds or less) after the Big Bang.   
      
   https://arxiv.org/pdf/2508.21748   
      
   A direct black hole mass measurement in a Little Red Dot at the Epoch of   
   Reionization   
   Ignas Juodžbalis 1,2★, Cosimo Marconcini 3,4, Francesco D’Eugenio 1,2,   
   Roberto Maiolino 1,2,5,   
   Alessandro Marconi 3,4, Hannah Übler 6, Jan Scholtz 1,2, Xihan Ji 1,2,   
   Santiago Arribas 7,   
   Jake S. Bennett 8, Volker Bromm 9, Andrew J. Bunker 10, Stefano Carniani   
   11, Stéphane Charlot 12,   
   Giovanni Cresci 4, Pratika Dayal 13,14, Eiichi Egami 15, Andrew Fabian   
   16, Kohei Inayoshi 17,   
   Yuki Isobe 1,2,18, Lucy R. Ivey 1,2, Gareth C. Jones 1,2, Sophie   
   Koudmani 19,20, Nicolas Laporte 21,   
   Boyuan Liu 22, Jianwei Lyu 15, Giovanni Mazzolari 6, Stephanie Monty 16,   
   Eleonora Parlanti 11,   
   Pablo G. Pérez-González 7, Michele Perna 7, Brant Robertson 23,   
   Raffaella Schneider 24,   
   Debora Sijacki 1,16, Sandro Tacchella 1,2, Alessandro Trinca 25, Rosa   
   Valiante 26, Marta Volonteri 12,   
   Joris Witstok 27,28, Saiyang Zhang 29,30   
   Recent discoveries of faint active galactic nuclei (AGN) at the redshift   
   frontier have revealed a plethora of broad Hα emitters   
   with optically red continua, named Little Red Dots (LRDs)1, which   
   comprise 15-30% of the high redshift broad line AGN   
   population2. Due to their peculiar spectral properties3–5 and X-ray   
   weakness6, modeling LRDs with standard AGN templates   
   has proven challenging. In particular, the validity of single-epoch   
   virial mass estimates in determining the black hole (BH)   
   masses of LRDs has been called into question, with some models claiming   
   that masses might be overestimated by up to   
   2 orders of magnitude7–10, and other models claiming that LRDs may be   
   entirely stellar in nature11. We report the direct,   
   dynamical BH mass measurement in a strongly lensed LRD at 𝑧 = 7.04. The   
   combination of lensing with deep spectroscopic   
   data reveals a rotation curve that is inconsistent with a nuclear star   
   cluster, yet can be well explained by Keplerian rotation   
   around a point mass of 50 million Solar masses, consistent with virial   
   BH mass estimates from the Balmer lines. The Keplerian   
   rotation leaves little room for any stellar component in a host galaxy,   
   as we conservatively infer 𝑀BH/𝑀∗ > 2. Such a “naked”   
   black hole, together with its near-pristine environment12, indicates   
   that this LRD is a massive black hole seed caught in its   
   earliest accretion phase.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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