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241
Following Fission Products in Explosive Astrophysical Environments
Published 2020-01-01“…The astrophysical process by which the heaviest elements are formed in the universe is known as the rapid neutron capture process, or r process, of nucleosynthesis. The r process is characterized by the neutron capture and β− decay of short-lived, neutron-rich atomic nuclei; in suitably extreme environments, nuclear fission can also play a major role in determining the ensuing nucleosynthesis. …”
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242
Dark nuclei. I. Cosmology and indirect detection
Published 2015“…For asymmetric dark matter, dark nucleosynthesis may alter the capture of dark matter in stars, allowing for captured particles to be processed into nuclei and ejected from the star through dark nucleosynthesis in the core. …”
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243
Does the CMB prefer a leptonic Universe?
Published 2013-01-01“…We compare recent data with a big bang nucleosynthesis code, assuming neutrino flavour equilibration via neutrino oscillations before the onset of big bang nucleosynthesis. …”
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244
The Influence of Nuclear Reactions and Nuclear Structure in Astrophysics
Published 2017-01-01“…Nuclear reactions play an important role for the energy production and the nucleosynthesis in stars. New facilities, able to accelerate radioactive nuclei or high-intensity stable beams have allowed us to measure in the laboratory reactions involving short-lived nuclei or processes with very small cross sections, which are crucial for stellar nucleosynthesis. …”
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245
The long-standing connection of BBN and Indirect measurements: The 3He(n,p)3H reaction at Big Bang energies
Published 2023-01-01“…Nuclear reactions play a key role in the framework of the Big Bang Nucleosynthesis. A network of 12 principal reactions has been identified as the main path which drives the elemental nucleosynthesis in the first twenty minutes of the history of the Universe. …”
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246
Constraints on ultralight scalar dark matter with quadratic couplings
Published 2023-03-01“…In this work, we examine the impact of quadratically-coupled ultralight dark matter on the predictions of Big Bang Nucleosynthesis. The presence of ultralight dark matter can modify the effective values of fundamental constants during Big Bang Nucleosynthesis, modifying the predicted abundances of the primordial elements such as Helium-4. …”
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247
Nuclear reactions in astrophysics
Published 2021-11-01“…This work is an attempt to present some problems on the evolution of the Universe: the nucleosynthesis and cosmochronology from the standpoint of physics of particles and nuclei, in particular with the use of the lat est results, obtained by means of radioactive nuclear beams. …”
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248
Improved BBN constraints on the variation of the gravitational constant
Published 2020-02-01“…Abstract Big Bang Nucleosynthesis (BBN) is very sensitive to the cosmological expansion rate. …”
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249
Probing the fission properties of neutron-rich actinides with the astrophysical r process
Published 2020-01-01“…We review recent work examining the influence of fission in rapid neutron capture (r-process) nucleosynthesis which can take place in astrophysical environments. …”
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250
The Nuclear Astrophysics program at n_TOF (CERN)
Published 2017-01-01“…An important experimental program on Nuclear Astrophysics is being carried out at the n_TOF since several years, in order to address the still open issues in stellar and primordial nucleosynthesis. Several neutron capture reactions relevant to s-process nucleosynthesis have been measured so far, some of which on important branching point radioisotopes. …”
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251
THE <sup>2</sup>H(alpha, gamma)<sup>6</sup>LI REACTION AT LUNA AND BIG BANG NUCLEOSYNTHETIS
Published 2013-12-01“…The preliminary data and their implications for Big Bang nucleosynthesis and the purported <sup>6</sup>Li problem will be shown.…”
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252
Nuclear Astrophysics at the Low-Energy Frontiers: Updates from underground laboratories
Published 2023-01-01“…Nuclear fusion reactions are the heart of nuclear astrophysics: they sensitively influence the nucleosynthesis of the elements in the earliest stages of the Universe and in all the objects formed thereafter; control the associated energy generation and neutrino luminosity; influence the evolution of stars. …”
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253
Sliding along the Eddington Limit—Heavy-Weight Central Stars of Planetary Nebulae
Published 2018-06-01“…Due to thermal pulses, asymptotic giant branch (AGB) stars experience periods of convective mixing that provide ideal conditions for slow neutron-capture nucleosynthesis. These processes are affected by large uncertainties and are still not fully understood. …”
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254
Neutrino Flavor Conversions in High-Density Astrophysical and Cosmological Environments
Published 2022-02-01“…Apart from being theoretically interesting, such a problem has several phenomenological implications in cosmology and in astrophysics, including the primordial nucleosynthesis of light elements abundance and other cosmological observables, nucleosynthesis of heavy nuclei, and the explosion of massive stars. …”
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255
Cosmological production of dark nuclei
Published 2019-04-01“…Models with singlets do not undergo dark nucleosynthesis unless a dark photon is added to the theory.…”
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256
The intermediate neutron-capture process in AGB stars
Published 2023-01-01“…After discussing the differences between the s- and i-processes in AGB stars, we highlight some critical (n, γ) reactions for i-process nucleosynthesis that may be experimentally constrained by the β-Oslo method. …”
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257
Hypothesis about Enrichment of Solar System
Published 2020-06-01“…Despite significant progress in the understanding of <i>galactic nucleosynthesis</i> and its influence on the solar system neighborhood, challenges remain in the understanding of enrichment of the <i>solar system</i> itself. …”
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258
Imprint of galactic rotation curves and metric fluctuations on the recombination era anisotropy
Published 2023-05-01“…We show that the amplitudes of metric fluctuations that originate in the nucleosynthesis era can grow by a factor of 1012 by recombination, and by a factor of 1018 by the current time. …”
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259
Expected Hard X-Ray and Soft Gamma-Ray from Supernovae
Published 2014-12-01“…High energy emissions from supernovae (SNe), originated from newly formed radioactive species, provide direct evidence of nucleosynthesis at SN explosions. However, observational diculties in the MeV range have so far allowed the signal detected only from the extremely nearby core-collapse SN 1987A. …”
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260
Experimental studies of neutron-rich nuclei around N = 126 at KEK isotope separation system
Published 2019-01-01“…Nuclear parameters such as lifetimes and masses of the waiting point nuclei of r-process nucleosynthesis are significant to investigate its astrophysical environment. …”
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