Closing a Window for Massive Photons by Sergio A. Hojman, Benjamin Koch

“…Working with the assumption of nonzero photon mass and a trajectory that is described by the nongeodesic world line of a spinning top we find, by deriving new astrophysical bounds, that this assumption is in contradiction with current experimental results. …”
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X-ray pulsed light curves of highly compact neutron stars as probes of scalar–tensor theories of gravity by Tulio Ottoni, Jaziel G. Coelho, Rafael C. R. de Lima, Jonas P. Pereira, Jorge A. Rueda

“…Abstract The strong gravitational potential of neutron stars (NSs) makes them ideal astrophysical objects for testing extreme gravity phenomena. …”
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Experimental dynamos: from models to applications to the geodynamo by Pétrélis, François

“…This phenomenon, known as the dynamo effect, is considered to be responsible for most of the magnetic fields of astrophysical objects, including that of the Earth. It took over 80 years after Larmor’s explanation for the first laboratory experiments to demonstrate the dynamo instability. …”
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Seeking for the Leading Actor on the Cosmic Stage: Galaxies versus Supermassive Black Holes by Angela Bongiorno, Francesco Shankar, Francesca Civano, Isabelle Gavignaud, Antonis Georgakakis

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An Interior Solution for the Kerr Metric: A Novel Approach by Yu-Ching Chou

“…The proposed solution offers a more realistic description of rotating black hole interiors, with implications for understanding compact astrophysical objects.…”
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Testing a Dilaton Gravity Model Using Nucleosynthesis by S. Boran, E. O. Kahya

“…Our results show that abundances of light elements (primordial D, 3He, 4He, T, and 7Li) are significantly different for some cases, and a comparison is given between a particular dilaton gravity model and Λ-CDM in the light of the astrophysical observations.…”
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Intermediate Mass Black Holes: Their Motion and Associated Energetics by C. Sivaram, Kenath Arun

“…There is a lot of current astrophysical evidence and interest in intermediate mass black holes (IMBH), ranging from a few hundred to several thousand solar masses. …”
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Curvature-Restored Gauge Invariance and Ultraviolet Naturalness by Durmuş Ali Demir

“…It can source various cosmological, astrophysical, and collider phenomena depending on its spectrum and couplings to the SM.…”
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Relating quantum mechanics and kinetics of neutrino oscillations by A. Kartavtsev

“…Abstract Simultaneous treatment of neutrino oscillations and collisions in astrophysical environments requires the use of (quantum) kinetic equations. …”
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Star shearing season: transient signals in wave-like dark matter experiments from black hole formation by Arturo de Giorgi, Joerg Jaeckel

“…This signal can be correlated with the corresponding astrophysical signal of the event. In this note, we consider a variety of couplings and the associated signals and estimate the corresponding sensitivities.…”
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An ultrafast algorithm for ultrafast time-resolved coherent Raman spectroscopy by Francesco Mazza, Dirk van den Bekerom

“…This result could greatly expand the application of time-resolved CRS, particularly in plasma research, as well as in broader atmospheric and astrophysical sciences.…”
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Complements to the Theoretical Treatments of the Electron Collision with : An R-Matrix Approach by V. Stancalie

“…To the best of our knowledge, the work reported herein describes for the first time a detailed calculation for this atomic system, and the results are relevant to the laboratory and astrophysical plasmas.…”
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Negative frequencies and negative norms in analogue Hawking radiation systems by Aguero-Santacruz, Raul, Bermudez, David

“…In this work, we study the core concepts of Hawking radiation in the astrophysical and analogue systems. We focus on negative frequencies and negative norms: their definition, their relationship, and their role in the particle creation process of the Hawking effect. …”
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Spacetime Deformation-Induced Inertia Effects by Gagik Ter-Kazarian

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Dark Atoms and the Positron-Annihilation-Line Excess in the Galactic Bulge by J.-R. Cudell, M. Yu. Khlopov, Q. Wallemacq

“…The cross-section for OHe collisions with excitation to 2s level is calculated and it is shown that the rate of such excitations in the galactic bulge strongly depends not only on the mass of O-helium, which is determined by the mass of O--, but also on the density and velocity distribution of dark matter. Given the astrophysical uncertainties on these distributions, this mechanism constrains the O-- mass to lie in two possible regions. …”
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Analyzing the speed of sound in neutron star with machine learning by Sagnik Chatterjee, Harsha Sudhakaran, Ritam Mallick

“…In this work, we use a neural network approach to study matter at intermediate densities to analyze the variation of the speed of sound and the measure of trace anomaly considering astrophysical constraints of mass–radius measurement of 18 neutron stars. …”
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Charged superradiant instability in a spherical regular black hole by Yizhi Zhan, Hengyu Xu, Shao-Jun Zhang

“…This growth rate significantly exceeds the instability identified in ABG black holes discussed in prior research, suggesting a notable timescale for detecting this phenomenon in astrophysical scenarios. Additionally, we conduct a thorough investigation into how the three parameters of the model influence the onset and intensity of the instability. …”
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The Discreet Charm of Higgsino Dark Matter: A Pocket Review by Kamila Kowalska, Enrico Maria Sessolo

“…In the second part we properly review the prospects for detection of a higgsino-like neutralino in direct underground dark matter searches, collider searches, and indirect astrophysical signals. We provide estimates for the typical scale of the superpartners and fine tuning in the context of traditional scenarios where the breaking of supersymmetry is mediated at about the scale of Grand Unification and where strong expectations for a timely detection of higgsinos in underground detectors are closely related to the measured 125 GeV mass of the Higgs boson at the LHC.…”
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Analysis of coupled acoustic and drift modes leading to modons in Maxwellian and non-Maxwellian dusty plasma by Zahida Ehsan, Nazia Batool, V. M. Lashkin

“…Numerical analysis shows the formation of vortices is impacted by nonthermality. The astrophysical and laboratory contexts provide a useful perspective on the significance of this analysis.…”
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Models of Anisotropic Self-Gravitating Source in Einstein-Gauss-Bonnet Gravity by G. Abbas, M. Tahir

“…Each solution can be represented in term of arbitrary function of time; this function has been chosen arbitrarily to fit the different astrophysical time profiles. The existing solutions forecast gravitational expansion and collapse depending on the choice of initial data. …”
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