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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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