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Álvaro Cendal (Universidad Complutense de Madrid)10/12/2025, 09:30Oral presentation
Dark matter may not be completely stable, and its decay could lead to new signatures in the form of gravitational waves. In this talk I will present model-independent predictions for the stochastic gravitational wave background produced by dark matter decaying into gravitons. Using this framework, I forecast the sensitivity of current and upcoming gravitational wave detectors to these signals.
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Javier Banegas Paredes (Universidad Complutense de Madrid)10/12/2025, 09:43Oral presentation
We report evidence of the detection of two super-Earth candidates orbiting nearby M-dwarf stars, identified through CARMENES observations. Both stars show clean periodic signals of a few days and amplitudes consistent with low-mass planets. Thanks to ground-based photometry the stellar activity of the two targets were studied obtaining the stellar rotacional periods. Through Gaussian-process...
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Diego Tessainer Bonet (Universidad Complutense de Madrid)10/12/2025, 09:56Oral presentation
General Relativity (GR) is currently the established theory for describing gravity. However, there are certain unresolved theoretical issues (such as the vacuum energy problem) and observational ones (cosmological tensions) that point to the need to consider modifications or extensions of the theory. On the other hand, observations indicate that the universe is undergoing accelerated...
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Guillermo Valé Arteaga (UCM)10/12/2025, 10:09Oral presentation
Understanding the mechanisms that govern star formation in galaxies is essential to uncover their evolution. This work employs Bayesian statistics and data-mining techniques to analyze metallicity gradients, which provide valuable insights into the processing and enrichment of gas in galaxies. A notable trend is the manifestation of the downsizing effect in the resolved properties of galaxies,...
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Pablo Navarro Moreno (Universidad Complutense de Madrid)10/12/2025, 11:00Oral presentation
Wormholes are objects frequently used in science fiction to traverse great distances on human time scales, taking advantage of these strange geometries to connect regions that appear to be far apart. Surprisingly, these objects are solutions to the field equations of General Relativity if additional fields are included. In particular, the Ellis–Bronnikov solution makes use of a phantom scalar...
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Christian Duque (UCM)10/12/2025, 11:13Oral presentation
M dwarfs are the most abundant stars in the Galaxy and key targets for stellar population and exoplanet studies, yet their molecularly rich spectra make chemical analysis difficult. This work presents a set of complementary methods to improve metallicity and abundance determinations in M dwarfs using photometry, low- and high-resolution spectroscopy, and data-driven techniques.
Wide FGK+M...
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Diego Voces Porteiro (Universidad Complutense de Madrid (UCM))10/12/2025, 11:26Oral presentation
Higher-derivative theories of gravity introduce powers of the Ricci scalar and Ricci tensor in the Hilbert-Einstein action in order to improve renormalizability at the cost of adding massive ghost-like particles. The muon anomalous magnetic moment, $a_\mu = \frac{( g_\mu -2 )}{2} $, given its precise measurement, is a perfect observable to test the viability of these theories and impose...
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Adithiya Dinesh10/12/2025, 11:39
Blazars are among the most powerful gamma-ray emitters, displaying rapid variability and extreme spectral properties. High synchrotron-peaked blazars (HSPs) and extreme high synchrotron-peaked blazars (EHSPs), with synchrotron peaks exceeding $10^{15}$ Hz and $10^{17}$ Hz, respectively, are crucial for understanding the full range of blazar phenomena and testing models of jet physics. Yet,...
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Eric García Hemon (Departamento de Física Teórica, Facultad de Ciencias Físicas, Universidad Complutense de Madrid)10/12/2025, 11:52Oral presentation
When treated as a Quantum Field Theory, General Relativity cannot describe gravity at all energy scales due to the non-renormalizability of the Hilbert-Einstein action. As a consequence, ongoing efforts aim to construct modified actions that improve renormalizability. This way, it might be possible to develop a Quantum Gravity Theory that can make reliable predictions at arbitrarily high...
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Enrica Bellocchi (Universidad Complutense de Madrid - IPARCOS)10/12/2025, 12:05Oral presentation
Outflows are crucial to AGN feedback, transporting mass and energy from the nucleus to the host galaxy across various scales. Theoretical models suggest that sub-relativistic Ultra Fast Outflows (UFOs), which interact with the ISM, decelerate and lose ionization, potentially driving large-scale, multi-phase outflows observable in optical and molecular gas.
The Narrow Line Seyfert 1 galaxy...
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Christian Durán Romero (Univ. Complutense de Madrid)10/12/2025, 12:18Oral presentation
This talk presents an overview of the research I am carrying out in my PhD thesis.
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Cosmological inflation is the leading framework for describing the physics of the early universe, originally introduced to solve the flatness, horizon, and monopole problems of the standard Big Bang model. It also provides a natural mechanism for generating primordial curvature perturbations: quantum... -
Dafne Martín Domínguez (UCM-GAE)10/12/2025, 14:30Oral presentation
Arrays of imaging atmospheric Cherenkov telescopes (IACTs) are superb instruments to probe the very-high-energy gamma-ray sky. Cosmic rays entering the atmosphere create air showers comprised of particles which produce Cherenkov light. It is detected by IACTs and contains spatial, temporal and calorimetric information of the event. Upon detection, IACT trigger systems determine, on real time,...
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Sara Piloñeta Álvarez10/12/2025, 14:43
In recent years, significant progress has been made in understanding the 3D structure of the nucleon, driven by the development of TMD factorization. Although this framework has demonstrated strong predictive power, it still exhibits certain limitations that may be addressed by incorporating power corrections. By including kinematic power corrections (KPCs), we have successfully described the...
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Alexander Cerviño10/12/2025, 14:56Oral presentation
Gamma rays are key when it comes to studying topics such as dark matter from an indirect perspective or the Lorentz invariance, as well as probing a wide range of astrophysical phenomena that provide a deeper understanding of the most energetic events in the universe. They can be detected through Imaging Atmospheric Cherenkov Telescopes (IACTs), which capture images of extensive air showers...
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Alejandro Canoa Monsalve (Universidad Complutense de Madrid)10/12/2025, 15:09Oral presentation
The ALICE collaboration has recently carried out measurements of femtoscopic correlations with light-hadron particle pairs, such as $\pi^+ K_S$ and $K^+ K_S$. Here we discuss how the $\pi^+ K_S$ data can be well reproduced using realistic interactions while accounting for the so-called finite-range potential (FRP) correction. Furthermore, we present predictions for other light-hadron channels...
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Jorge Buces Sáez (UCM-GAE)10/12/2025, 15:22Oral presentation
CTAO North will consist of four Large Size Telescopes (LSTs), designed to detect very low-energy gamma rays. Given the limited lifespan of current cameras, new prototypes are being developed for the next generation of LSTs. The LST AdvCam, based on silicon photomultipliers, digitises signals from its nearly 8,000 pixels at 1 GHz, generating a volume of data that requires highly efficient...
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Alba Reyes Torrecilla (Universidad Complutense de Madrid and IPARCOS)10/12/2025, 15:35Oral presentation
We utilize the universality of pion–pion (ππ) final-state interactions at small invariant masses to understand the enhanced local CP violation in B± → K±π+π−, using a dispersive approach. From a fit to the integrated CP-asymmetry data, we successfully predict the Dalitz-plot kinematic distribution of the asymmetry in the low-energy ππ region, including the large local CP violation recently...
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Juan José Gálvez Viruet (Univ. Complutense de Madrid)10/12/2025, 15:48
One of the most anticipated applications of quantum information science is the simulation of complex systems. Those involving quarks and gluons are particularly compelling, as their real-time phenomenology remains elusive to computational techniques such as traditional Monte Carlo methods. Overcoming these challenges could provide unprecedented insights into the dynamics of partons.
In this...
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María Molina Delicado (UCM-GAE)10/12/2025, 16:45Oral presentation
The Cherenkov Telescope Array Observatory (CTAO) is the next-generation ground-based gamma-ray instrument. Its Large-Sized Telescopes (LSTs) are specifically designed to observe the low-energy range and capture fast transient events. To enhance their capabilities, an Advanced SiPM-based Camera is currently under development and requires a robust digital trigger system. This contribution...
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Álvaro Álvarez-Domínguez (Universidad Complutense de Madrid e IPARCOS)10/12/2025, 16:58Oral presentation
Analog gravity experiments, such as those realized in Bose-Einstein condensates, often aim at simulating cosmological pair production due to the dynamical expansion of the Universe. However, these experiments have a start and an end, which introduces unavoidable transitions out of and into static regimes that alter the intended expansion profile. We show that the resulting particle spectra can...
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María Láinez (UCM)10/12/2025, 17:11Oral presentation
Extreme high-synchrotron-peaked blazars (EHSPs), defined by synchrotron peaks above 10^17 Hz, represent an uncommon subclass of blazars that challenge conventional blazar emission models and probe the limits of particle acceleration in relativistic jets. Yet, the number of identified EHSPs remains small, limiting comprehensive studies of their population and physical characteristics. In this...
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Dr Alexandre Salas-Bernárdez (Universidad Complutense de Madrid)10/12/2025, 17:24Oral presentation
Recently, the ATLAS and CMS collaborations have accumulated growing statistics on processes involving the production of two or more electroweak (EW) bosons, such as HH and WWZ. These multi-boson final states play a crucial role in probing the structure of the EW symmetry-breaking sector and exploring its possible extensions within the framework of Effective Field Theories (EFTs), both in the...
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Alberto Dominguez (Universidad Complutense de Madrid & IPARCOS)10/12/2025, 17:37
Low-luminosity active galactic nuclei (LLAGN) occupy the low-accretion, low-luminosity end of the AGN population, where jet activity and particle acceleration can be modest. A significant subset of them are LINERs, nearby galactic nuclei characterized by weakly ionized emission lines. The recent TeV detection of the LINER/LLAGN NGC 4278 therefore offers a rare opportunity to probe high-energy...
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Jose Luis Contreras Gonzalez (GAE/EMFTEL Universidad Complutense de Madrid), Prof. Juan J. Sanz Cillero (Universidad Complutense de Madrid & IPARCOS)10/12/2025, 17:50Oral presentation
In this brief presentation, We would like to share some thoughts about the IPARCOS Camp activity that was organized for the predoctoral researchers of the Institute on this previous May at El Escorial. Besides the purely scientific activities (research dissemination, sharing expertises, synergies), the workshop paid particular attention to team building. Likewise, there were especial sessions...
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Mercedes Martín Benito (IPARCOS)10/12/2025, 18:05
This talk would like to publicly present and discuss the recently approved Equity, Diversity, Inclusion and Welfare (EDIW) Plan at IPARCOS.
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10/12/2025, 18:20
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Juan José Gálvez Viruet (Univ. Complutense de Madrid)
One of the most anticipated applications of quantum information science is the simulation of complex systems. Those involving quarks and gluons are particularly compelling, as their real-time phenomenology remains elusive to computational techniques such as traditional Monte Carlo methods. Overcoming these challenges could provide unprecedented insights into the dynamics of partons.
In this...
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