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    New insights into axion freeze-in by Mudit Jain, Angelo Maggi, Wen-Yuan Ai, David J. E. Marsh

    Published 2024-11-01
    “…Such heavy axions are unstable and subsequently decay, leading to strong constraints on g ϕγ from astrophysics and cosmology. In this work, we revisit the computation of the freeze-in abundance and clarify important issues. …”
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  10. 750

    The cosmic timeline implied by the highest redshift quasars by Fulvio Melia

    Published 2024-12-01
    “…Our goal in this Letter is to demonstrate that the emergence of these black holes is instead fully consistent with standard astrophysics in the context of the alternative Friedmann–Lemaître–Robertson–Walker cosmology known as the $$R_\textrm{h}=ct$$ R h = c t universe. …”
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  11. 751

    Role of Time-Varying Magnetic Field on QGP Equation of State by Yogesh Kumar, Poonam Jain, Pargin Bangotra, Vinod Kumar, D. V. Singh, S. K. Rajouria

    Published 2024-01-01
    “…The study plays a pivotal role in the field of cosmology, astrophysics, and heavy-ion collisions. In order to explore the structure of quark-gluon plasma to deal with the dynamics of quarks and gluons, we investigate the equation of state (EoS) not only in the environment of static magnetic field but also in the presence of time-varying magnetic fields. …”
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  12. 752

    The Badhwar‐O'Neill 2020 GCR Model by T. C. Slaba, K. Whitman

    Published 2020-06-01
    “…Parameters in the new model are calibrated to available data, which include the new Alpha Magnetic Spectrometer (AMS‐02) and Payload for Antimatter Matter Exploration and Light‐nuclei Astrophysics (PAMELA) high‐precision measurements. It is found that the BON2020 model is a significant improvement over BON2014. …”
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