Modes of representation in contemporary Galician visual poetry

Visual poetry in Galicia had a plural and discontinuous existence in the twentieth century'! Its development in Galicia follows national (Spanish) and international artistic practices, while also engaging in the configuration of a local, national, and transnational Galician identity. The practice of different styles of visual poetry shows a rich line of creativity, especially in the last four decades. Their approaches coincide with sociocultural and economic changes in Spain, such as the end of the dictatorship in 1975, the consequent normalization of the Galician language, and more recently the progressive influence of globalization. This essay considers how current Galician visual poets reconceptualize these issues in the context of an international cultural and visual aesthetics

Dark matter within the minimal flavour violation ansatz

Minimal Flavour Violation hypothesis can provide an attractive framework for Dark Matter (DM). We consider scalar DM candidates carrying flavour quantum numbers and whose representation under the flavour group guarantees DM stability. They interact with the Standard Model fields through Higgs portal at renormalisable level and also to quarks through dimension-6 operators. We provide a systematic analysis of the viable parameter space for the DM fields, which are triplet of the flavour group, considering several DM-quark interactions. In this framework, we analyse in which cases the viable parameter space differs from Higgs portal models thanks to the underlying flavour structure. In contrast to minimal Higgs portal scenarios, we find that light DM in the GeV mass range as well as heavier candidates above Higgs resonance could be allowed by colliders, direct and indirect DM detection searches as well as flavour constraints. The large mass regime above the top mass could even be beyond the reach of future experiments such as Xenon 1T.Comment: 11 pages, 2 figures; v2: references added, version published on Phys.Lett.

The inert doublet model of dark matter revisited

The inert doublet model, a minimal extension of the Standard Model by a second higgs doublet with no direct couplings to quarks or leptons, is one of the simplest scenarios that can explain the dark matter. In this paper, we study in detail the impact of dark matter annihilation into three-body final state on the phenomenology of the inert doublet model. We find that this new annihilation mode dominates, in a relevant portion of the parameter space, over those into two-body final states considered in previous analysis. As a result, the computation of the relic density is modified and the viable regions of the model are displaced. After obtaining the genuine viable regions for different sets of parameters, we compute the direct detection cross section of inert higgs dark matter and find it to be up to two orders of magnitude smaller than what is obtained for two-body final states only. Other implications of these results, including the modification to the decay width of the higgs and to the indirect detection signatures of inert higgs dark matter, are also briefly considered. We demonstrate, therefore, that the annihilation into three-body final state can not be neglected, as it has a important impact on the entire phenomenology of the inert doublet model.Comment: 22 pages, format changed, more detailed discussion in general, figures and references adde

A feeble window on leptophilic dark matter

In this paper we study a leptophilic dark matter scenario involving feeble dark matter coupling to the Standard Model (SM) and compressed dark matter-mediator mass spectrum. We consider a simplified model where the SM is extended with one Majorana fermion, the dark matter, and one charged scalar, the mediator, coupling to the SM leptons through a Yukawa interaction. We first discuss the dependence of the dark matter relic abundance on the Yukawa coupling going continuously from freeze-in to freeze-out with an intermediate stage of conversion driven freeze-out. Focusing on the latter, we then exploit the macroscopic decay length of the charged scalar to study the resulting long-lived-particle signatures at collider and to explore the experimental reach on the viable portion of the parameter space.Comment: 32 pages, 10 figure

Vector fuzzy dark matter, fifth forces, and binary pulsars

We study the secular effects that an oscillating background ultralight (fuzzy) cosmological vector field has on the dynamics of binary systems; such effects appear when the field and the binary are in resonance. We first consider the gravitational interaction between the field and the systems, and quantify the main differences with an oscillating background scalar field. If the energy density of such a field is sufficiently large, as required if it is supposed to be all of the dark matter, we show that the secular effects could yield potentially observable signatures in high precision time of arrival measurements of binary pulsars. We then analyse the secular effects that arise when the field is directly coupled to the bodies in the binary. We show that this study is particularly relevant for models where fuzzy dark matter mediates a baryonic force B (or B-L, with L the lepton number), due to the stellar amount of nucleons present in the stars. The constraints we obtain from current data are already competitive with (or even more constraining than) laboratory tests of the equivalence principle.Fil: Lopez Nacir, Diana Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaFil: Urban, Federico R.. Czech Academy of Sciences; República Chec

Asymmetries of Heavy Elements in the Young Supernova Remnant Cassiopeia A

Supernova remnants (SNRs) offer the means to study supernovae (SNe) long after the original explosion and can provide a unique insight into the mechanism that governs these energetic events. In this work, we examine the morphologies of X-ray emission from different elements found in the youngest known core-collapse (CC) SNR in the Milky Way, Cassiopeia A. The heaviest elements exhibit the highest levels of asymmetry, which we relate to the burning process that created the elements and their proximity to the center of explosion. Our findings support recent model predictions that the material closest to the source of explosion will reflect the asymmetries inherent to the SN mechanism. Additionally, we find that the heaviest elements are moving more directly opposed to the neutron star (NS) than the lighter elements. This result is consistent with NS kicks arising from ejecta asymmetries.Comment: 12 pages, 4 figures, 2 tables Updated to include an analysis of Emission Measure Maps (vs the, still-included, continuum-subtracted flux maps), used as another proxy for mass maps. The results have not changed; the emission measure maps also show increasing asymmetry with ejecta mass. (Now matches the version published in ApJ. Vol 889 Issue 2 (2020) 144

Malignant mesothelioma: A narrative review of the literature

Malignant mesothelioma, predominantly linked to asbestos exposure, is an aggressive cancer originating from mesothelial cells, which safeguard internal organs. Although rare, mesothelioma frequently affects the pleural layer surrounding the lungs. While asbestos, particularly amosite and crocidolite types, is the chief risk factor, the disease's infrequency means not every exposed individual contracts it. This malignancy, especially its pleural form, mainly arises from inhaled asbestos, causing cellular disruptions and eventual cancerous growths. Occupational exposure is common in professions like shipbuilding, mining, and insulation tasks, among others. The U.S. registers approximately 2,500 mesothelioma cases yearly, with the disease predominantly affecting older males following decades of asbestos exposure. Epidemiologically, areas with rampant asbestos use, such as China, report higher incidences, while regions like Hong Kong exhibit low rates despite high exposure. From a pathophysiological standpoint, mesothelioma exists in three primary forms: epithelioid, sarcomatoid, and mixed, with epithelioid variants having better prognoses. Clinical evaluations primarily involve chest CT scans and thoracoscopic biopsies. Distinguishing malignant pleural mesothelioma from other conditions is crucial. Prognostication is complicated, but several vital factors, such as disease stage and histological type, influence outcomes. Two main scoring systems, the Cancer and Leukemia Group B (CALGB) index and the European Organisation for the Research and Treatment of Cancer (EORTC) index, assist in patient stratification. Regarding treatment, standard therapeutic strategies, barring localized forms, seldom offer a cure. Procedures like pleurectomy offer symptom relief, while trimodality therapy combines chemotherapy, surgery, and radiation, often showing promising results when applied in specialized centers. Phase II studies indicate extended survival rates with post-surgery adjuvant radiation therap