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Research Paper#Nuclear Astrophysics, Big Bang Nucleosynthesis🔬 ResearchAnalyzed: Jan 3, 2026 17:14

THM Improves Big Bang Nucleosynthesis Predictions

Published:Dec 30, 2025 17:10
1 min read
ArXiv

Analysis

This paper highlights the application of the Trojan Horse Method (THM) to refine nuclear reaction rates used in Big Bang Nucleosynthesis (BBN) calculations. The study's significance lies in its potential to address discrepancies between theoretical predictions and observed primordial abundances, particularly for Lithium-7 and deuterium. The use of THM-derived rates offers a new perspective on these long-standing issues in BBN.
Reference

“The result shows significant differences with the use of THM rates, which in some cases goes in the direction of improving the agreement with the observations with respect to the use of only reaction rates from direct data, especially for the $^7$Li and deuterium abundances.”

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Research Paper#Astrophysics, Kilonova, Nucleosynthesis🔬 ResearchAnalyzed: Jan 3, 2026 15:43

Revised Lanthanide Abundance in Kilonova AT 2017gfo

Published:Dec 30, 2025 14:32
1 min read
ArXiv

Analysis

This paper improves the modeling of the kilonova AT 2017gfo by using updated atomic data for lanthanides. The key finding is a significantly lower lanthanide mass fraction than previously estimated, which impacts our understanding of heavy element synthesis in neutron star mergers.
Reference

“The model necessitates $X_{ extsc{ln}} \approx 2.5 imes 10^{-3}$, a value $20 imes$ lower than previously claimed.”

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Research Paper#Nuclear Astrophysics, Stellar Evolution, Nucleosynthesis🔬 ResearchAnalyzed: Jan 3, 2026 19:23

Impact of Oxygen Fusion Rate on Pop III Star Nucleosynthesis

Published:Dec 28, 2025 15:11
1 min read
ArXiv

Analysis

This paper investigates the impact of the $^{16}$O($^{16}$O, n)$^{31}$S reaction rate on the evolution and nucleosynthesis of Population III stars. It's significant because it explores how a specific nuclear reaction rate affects the production of elements in the early universe, potentially resolving discrepancies between theoretical models and observations of extremely metal-poor stars, particularly regarding potassium abundance.
Reference

“Increasing the $^{16}$O($^{16}$O, n)$^{31}$S reaction rate enhances the K yield by a factor of 6.4, and the predicted [K/Ca] and [K/Fe] values become consistent with observational data.”

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Physics#Cosmology, Gravitational Waves, Dark Matter🔬 ResearchAnalyzed: Jan 3, 2026 20:01

Detecting Primordial Black Hole Relics with Gravitational Waves

Published:Dec 27, 2025 03:37
1 min read
ArXiv

Analysis

This paper proposes a novel method to detect primordial black hole (PBH) relics, which are remnants of evaporating PBHs, using induced gravitational waves. The study focuses on PBHs that evaporated before Big Bang nucleosynthesis but left behind remnants that could constitute dark matter. The key idea is that the peak positions and amplitudes of the induced gravitational waves can reveal information about the number density and initial abundance of these relics, potentially detectable by future gravitational wave experiments. This offers a new avenue for probing dark matter and the early universe.
Reference

“The peak frequency scales as $f_{ ext {relic }}^{1 / 3}$ where $f_{ ext {relic }}$ is the fraction of the PBH relics in the total DM density.”

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Research#Astrophysics🔬 ResearchAnalyzed: Jan 10, 2026 18:05

Pre-Supernova Shell Mergers: A New Source of Titanium-44?

Published:Dec 19, 2025 15:38
1 min read
ArXiv

Analysis

This article discusses a specific astrophysical phenomenon relevant to understanding the origins of elements. The research, published on ArXiv, is a highly technical discussion not broadly accessible to a general audience but important for experts in astrophysics.
Reference

“Pre-supernova O-C shell mergers could produce more $^{44}\mathrm{Ti}$ than the explosion.”

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