本次会议共收录 601 篇报告,分布于 60 个分会。可按标题、作者或正文关键词检索。
共 601 条结果
The water Cherenkov neutrino telescope ANTARES was a 0.01 km3 volume detector located in the Mediterranean Sea which aimed at the detection of high-energy cosmic neutrinos, specially those of Galactic origin. It operated from 2007 until the beginning of 2022,…
Although calculations of QCD thermodynamics from first-principle lattice simulations are limited to zero net-density due to the fermion sign problem, several methods have been developed to extend the equation of state (EoS) to finite values of the B, Q, S chem…
This year marks the anniversary of the discovery of the Hulse-Taylor pulsar, which ushered in a a new era in the study of relativistic gravity. This Nobel Prize-winning discovery not only provided evidence for the existence of gravitational waves, but also led…
We will present a mathematical formulation of Ashtekar variables using the language of differential topology, aligning as closely as possible with the mathematical description of Yang-Mills theories. This approach illuminates the similarities while highlightin…
10691 Stockholm, Sweden 5 School of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UK 6 ICRANet, Piazza della Repubblica 10, I-65122 Pescara, Italy 7 Center for Space Plasma and Aeronomic Research, University of Alabama in…
We reveal a new structure of black holes previously unexplored in the 20th Century. A black hole with an angular momentum and an angular velocity has a moment of inertia. It is a hidden property of the Kerr metric. When the rotation stops in an energy extracti…
Gamma-ray bursts (GRBs), as they are observed at high redshift (z = 9.4), are vital to cosmological studies and investigating Population III stars. To tackle these studies, we need correlations among relevant GRB variables with the requirement of small uncerta…
We reflect on the possibility of breaking the diffeomorphism (Dif) invariance in the gravitational couplings of matter down to only transverse diffeomorphisms (TDif), and study the consequences on a scalar field theory. We then explore the possibility of res…
Given a base manifold M and a Lie group G, we define ] calAM a space of generalized G-connections on M with the following properties: • The space of smooth connections calA∞ M = ⊔πcalA∞ π is densely embedded in ] calAM = ⊔π ] calA ∞ π ; moreover, in contrast w…
In this presentation, we discuss a treatment of Casimir-Polder gravitational fluctuation forces based on a classical general relativistic gravitational field framework. In analogy with the acoustic Casimir effect, we analyze the interaction between high densit…
The first detection of a binary neutron star merger has made sharp reality the long-standing paradigm that these cosmic fireworks are exciting laboratories for extreme physics. To get the most out of observations, however, we need accurate modelling of the mer…
In this talk, I will present two recent models for explaining the observed GRB spectra. As a GRB jet drills its way through the collapsing star, it traps a baryonic “cork” ahead of it. If the jet does not cross this cork, but rather photons that are emitted de…
I will introduce a dynamical system formulation for inhomogeneous LRS-II spacetimes using the covariant 1+1+2 decomposition approach, that we recently proposed in 2404.01161. Our approach describes the LRS-II dynamics from the point of view of a comoving obser…
In this talk the possible geodesic completeness of an electromagnetic dipole wormhole is studied in detail. The space-time contains a curvature singularity, and belongs to a class of solutions to the Einstein-Maxwell equations with a coupled scalar field that…
The nature of recently discovered ultra-long period radio transients is uncertain. If these sources are neutron stars, their long periods strongly challenge rotation-powered emission models. In this talk, I will present a new model of radio emission from ultra…
In this talk I will present a method devised to test the consistency between the background expansion and the evolution of cosmological perturbations. Such a test can be performed in a model independent way thanks to machine learning techniques and it will all…
Observations with the Gaia satellite have confirmed that the satellite galaxies of the Milky Way are not distributed as homogeneously as expected. The same occurs in galaxies such as Andromeda and Centaurus A, where satellite galaxies around their host galaxie…
I will illustrate a new method to search for long transient gravitational wave signals, like those expected from fast spinning newborn magnetars, in interferometric detector data. Because of the fast frequency variation of these signals, matched filter techniq…
Existence of naked singularities is a topical and fundamental issue of physics. The formation mechanism of such objects, particularly those with near-solar-mass, is not yet clear. Since, recent gravitational wave events have suggested the existence of near-sol…
The advent of a new generation of observational facilities, such as the James Webb Space Telescope (JWST) and the Euclid space telescope, has just inaugurated a new era of discoveries that are destined to revolutionize all fields of astrophysics, including str…
In some modern theories, fields of the Standard Model of particle physics are allowed to interact with dark matter and dark energy. Such interactions, if they exist, may give rise to temporal evolution of the fine structure constant (α) or its spatial variatio…
In this paper, we develop a new model representing a spherically symmetric dark matter fluid sphere that could describe compact stellar objects. We consider that the compact star contains two regions namely, an isotropic inner core region with constant density…
We construct a (quantum mechanically) modified model for the Oppenheimer-Snyder collapse scenario where the exterior of the collapsing dust ball is a Hayward black hole spacetime and the interior is a dust Friedmann-Robertson-Walker cosmology. This interior co…
International Centre for Theoretical Sciences, Tata Institute of Fundamental Research, Bangalore, India Magnetars are slowly rotating, young, and isolated neutron stars with surface dipole magnetic fields exceeding the quantum electrodynamic magnetic field lim…
Fast Radio Bursts are known to exhibit scintillation and scattering phenomena , often attributed to the interaction of multiple screens. A common argument is that two screens, when appearing “pointlike” to each other, scintillate on both scales. This condition…