Showing 361 - 380 results of 567 for search '"nucleosynthesis"', query time: 0.14s Refine Results
  1. 361

    Overview of Numerical Simulations for Calculating In-Plasma β-Decay Rates in the Framework of PANDORA Project by Mishra Bharat

    Published 2023-01-01
    “…β-decay rates are essential inputs in stellar nucleosynthesis models to explain observed nuclear abundances. …”
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    Article
  2. 362

    A CMB search for the neutrino mass mechanism and its relation to the Hubble tension by Miguel Escudero, Samuel J. Witte

    Published 2020-04-01
    “…In this work, we investigate potential imprints in the cosmic microwave background (CMB) arising from massive majorons, should they thermalize with neutrinos after Big Bang Nucleosynthesis via inverse neutrino decays. We show that Planck2018 measurements of the CMB are currently sensitive to neutrino-majoron couplings as small as $$\lambda \sim 10^{-13}$$ λ∼10-13 , which if interpreted in the context of the type-I seesaw mechanism correspond to a lepton number symmetry breaking scale $$v_L \sim {\mathcal {O}}(100) \, \mathrm{GeV}$$ vL∼O(100)GeV . …”
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  3. 363

    Intriguing Revelations from Lithium, Beryllium, and Boron by Ann Merchant Boesgaard

    Published 2023-01-01
    “…It is not a comprehensive review of work on these light elements, but contains sections on Big Bang nucleosynthesis of Li and the rarity of these light elements. …”
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    Article
  4. 364

    Correlated iron 60, nickel 62, and zirconium 96 in refractory inclusions and the origin of the solar system by Quitte, G, Halliday, A, Meyer, B, Markowski, A, Latkoczy, C, Guenther, D

    Published 2007
    “…The effects show the signature of neutron-burst nucleosynthesis in a massive star. Such a neutron burst is plausibly responsible for the abundance of many of the short-lived radioactivities present in the early solar system; therefore, at least some of the nucleosynthetic heterogeneity previously reported from CAIs, leached carbonaceous chondrites, and presolar grains is likely to have been generated by dust injection from a supernova at a time close to the beginning of the solar system, which is consistent with a trigger for solar nebula collapse, or generated directly by dust injection into the protoplanetary disk. © 2007. …”
    Journal article
  5. 365

    Impact of Ejecta Temperature and Mass on the Strength of Heavy Element Signatures in Kilonovae by Tak, D, Uhm, ZL, Gillanders, JH

    Published 2024
    “…A kilonova, the electromagnetic emission produced by compact binary mergers, is formed through a delicate interplay of physical processes, involving r-process nucleosynthesis and interactions between heavy elements and photons through radiative transfer. …”
    Journal article
  6. 366

    First Estimations of Cosmological Parameters From BOOMERANG by Lange, A, Ade, P, Bock, J, Bond, JR, Borrill, J, Boscaleri, A, Coble, K, Crill, B, Bernardis, P, Farese, P, Ferreira, P, Ganga, K, Giacometti, M, Hivon, E, Hristov, V, Iacoangeli, A, Jaffe, A, Martinis, L, Masi, S, Mauskopf, P, Melchiorri, A, Montroy, T, Netterfield, C, Pascale, E, Piacentini, F

    Published 2000
    “…We find that the data prefer a baryon density $\Omega_b h^2$ above, though similar to, the estimates from light element abundances and big bang nucleosynthesis. When combined with large scale structure observations, the BOOMERANG data provide clear detections of both dark matter and dark energy contributions to the total energy density $\Omega_{\rm {tot}}$, independent of data from high redshift supernovae.…”
    Journal article
  7. 367

    Laboratory for Underground Nuclear Astrophysics by Piatti Denise

    Published 2024-01-01
    “…LUNA early activity was dedicated to reactions relevant to the Sun, and then, thanks to the installation of a new accelerator (LUNA400), it focused on the study of the Big Bang Nucleosynthesis (BBN) and of the CNO, NeNa and MgAl cycles. …”
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    Article
  8. 368

    THERMAL AND CHEMICAL EVOLUTIONS OF GALAXY CLUSTERS OBSERVED WITH SUZAKU by Kosuke Sato, Kyoko Matsushita, Yoshitaka Ishisaki, Noriko Y. Yamasaki, Takaya Ohashi

    Published 2013-12-01
    “…Comparing the results with supernova nucleosynthesis models, the number ratio of type II to Ia supernovae is estimated to be ~3.5. …”
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    Article
  9. 369

    A Time-Dependent Λ and G Cosmological Model Consistent with Cosmological Constraints by L. Kantha

    Published 2016-01-01
    “…The prevailing constant Λ-G cosmological model agrees with observational evidence including the observed red shift, Big Bang Nucleosynthesis (BBN), and the current rate of acceleration. …”
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  10. 370

    BBN photodisintegration constraints on gravitationally produced vector bosons by Chee Sheng Fong, Moinul Hossain Rahat, Shaikh Saad

    Published 2022-11-01
    “…As a result, much stronger constraints from the Big Bang Nucleosynthesis (BBN) can be placed on the lifetime and mass of the vector bosons compared to the scenario where only thermal production is considered. …”
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    Article
  11. 371

    Nonabelian kinetic mixing in a confining phase: a framework for composite dark photons by Gonzalo Alonso-Álvarez, Ruike Cao, James M. Cline, Karishma Moorthy, Tianzhuo Xiao

    Published 2024-02-01
    “…We comprehensively study the constraints on such models from colliders, rare decays, direct detection, and big bang nucleosynthesis.…”
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    Article
  12. 372

    Non-equilibrium quantum domain reconfiguration dynamics in a two-dimensional electronic crystal and a quantum annealer by Jaka Vodeb, Michele Diego, Yevhenii Vaskivskyi, Leonard Logaric, Yaroslav Gerasimenko, Viktor Kabanov, Benjamin Lipovsek, Marko Topic, Dragan Mihailovic

    Published 2024-06-01
    “…Abstract Relaxation dynamics of complex many-body quantum systems trapped into metastable states is a very active field of research from both the theoretical and experimental point of view with implications in a wide array of topics from macroscopic quantum tunnelling and nucleosynthesis to non-equilibrium superconductivity and energy-efficient memory devices. …”
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  13. 373

    O and Fe abundance correlations and distributions inferred for the thick and thin disk by Caimmi R.

    Published 2015-01-01
    “…Besides that, the iron-to-oxygen yield ratio and the primary to not primary contribution ratio for the iron production are obtained from the data, resulting consistent with the SNII progenitor nucleosynthesis and with the iron production from SNIa supernova events.…”
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  14. 374

    Smooth reheating and dark matter via non-Abelian gauge theory by S. Biondini, H. Kolešová, S. Procacci

    Published 2024-10-01
    “…Moreover, indirect detection and Big-Bang nucleosynthesis set bounds on the scale of portal interactions. …”
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  15. 375

    Hubble constant in the axi-Higgs universe by Leo W. H. Fung, Lingfeng Li, Tao Liu, Hoang Nhan Luu, Yu-Cheng Qiu, S.-H. Henry Tye

    Published 2023-06-01
    “…It relaxes the H_{0} tension as well as explains the ^{7}Li puzzle in big bang nucleosynthesis, the clustering S_{8} tension with the weak-lensing (WL) data, and the observed isotropic cosmic birefringence in CMB. …”
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    Article
  16. 376

    A 30m Large Program: The CO Line Atlas of the Whirlpool Galaxy Survey (CLAWS) by den Brok Jakob, Bigiel Frank

    Published 2022-01-01
    “…Likely drivers include CO abundance variations due to selective nucleosynthesis and changes in the optical depth. Our analysis concludes that a combination of variation in opacity and relative abundances is the dominant driver for the observed CO isotopologue ratio trends on large (kpc) scales. …”
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  17. 377
  18. 378

    Presolar grain isotopic ratios as constraints to nuclear physics inputs for s-process calculations by Palmerini Sara, Busso Maurizio, Vescovi Diego, Cristallo Sergio, Mengoni Alberto, Simonucci Stefano, Taioli Simone

    Published 2023-01-01
    “…The isotopic abundances in presolar SiC grains of AGB origin provide important and precise constraints to those star nucleosynthesis models. By comparing the values of the s-element abundances resulting from calculations with the ones measured in these dust grains, it turns out that new measurements of weak-interaction rates in ionized plasmas, as well as of neutron-capture cross sections, are needed, especially in the region near the neutron magic numbers 50 and 82.…”
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  19. 379

    Primordial Black Holes as dark matter candidates: Constraints from the diffuse MeV emission by Berteaud Joanna, Francesca Calore, Iguaz Joaquim, Serpico Pasquale Dario, Siegert Thomas

    Published 2023-01-01
    “…Hypothetically formed from the collapse of over-densities before Big Bang nucleosynthesis, PBHs are interesting candidates for DM in the ΛCDM model of cosmology. …”
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  20. 380

    Inelastic Dirac dark matter by Anastasiia Filimonova, Sam Junius, Laura Lopez Honorez, Susanne Westhoff

    Published 2022-06-01
    “…We show that inelastic Dirac relics are consistent with cosmological observations, in particular with nucleosynthesis and the cosmic microwave background. Searches for dark sectors at colliders and fixed-target experiments, in turn, are very sensitive probes. …”
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    Article