3,561 results on '"Cosmography"'
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2. Cosmography of [formula omitted] gravity
- Author
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Mishra, Sai Swagat, Fortunato, J.A.S., Moraes, P.H.R.S., and Sahoo, P.K.
- Published
- 2025
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3. ΛCDM model against cosmography: a possible deviation after DESI 2024.
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Pourojaghi, Saeed, Malekjani, Mohammad, and Davari, Zahra
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TYPE I supernovae , *DARK matter , *COSMOGRAPHY , *STANDARD model (Nuclear physics) , *PHYSICAL cosmology , *DARK energy , *COSMIC background radiation - Abstract
In this study, we present an analysis of the standard flat- |$\Lambda$| CDM (Lambda cold dark matter) model using a cosmographic approach, incorporating recent Dark Energy Survey Instrument (DESI) baryon acoustic oscillation (BAO) observations and Type Ia Supernova (SNIa) catalogues, including Dark Energy Survey Supernova 5 Year Release (DES-SN5YR) and Pantheon + compilations. We find full consistency between the standard model and the cosmographic approach when considering DESI BAO and SNIa catalogues independently. When combining DESI BAO with SNIa data, we examine the impact of the Planck prior on the sound horizon at the drag epoch, |$r_d$| , and the Cepheid prior on the absolute magnitude, M. Applying the Planck prior on |$r_d$| alone yields an |$H_0$| value consistent with the Planck measurement, while applying the Cepheid prior on M alone results in an |$H_0$| value consistent with the SH0ES measurement. Without any priors, the |$H_0$| value obtained has a large error margin, reconciling the Planck and SH0ES measurements. In all cases where individual priors are applied, we observe no significant tension between the flat- |$\Lambda$| CDM model and the cosmographic approach. However, when both Planck and Cepheid priors are applied simultaneously, significant tensions arise between the model and cosmography. This tension is even more pronounced when excluding LRG1 and LRG2 from the DESI measurements. These results indicate that the standard model cannot simultaneously reconcile high-redshift Planck cosmic microwave background observations and local Cepheid measurements. This discrepancy supports the possibility of new physics beyond the standard model or, alternatively, the presence of unrecognized systematic errors in the observational data. [ABSTRACT FROM AUTHOR]
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- 2025
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4. İDRÎS-İ BİTLİSÎ'YE GÖRE TÜRK DEVLET GELENEĞİ (HEŞT BİHİŞT BAĞLAMINDA-2).
- Author
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ATİK, Kayhan
- Subjects
ETHNIC groups ,SULTANS ,UIGHUR (Turkic people) ,SOCIAL order ,COSMOGRAPHY - Abstract
Copyright of Kırıkkale University Journal of Social Sciences is the property of Kirikkale University Journal of Social Science (KUJSS) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2025
5. Find the haystacks, then look for needles: the rate of strongly lensed supernovae in galaxy–galaxy strong gravitational lenses.
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Sainz de Murieta, Ana, Collett, Thomas E, Magee, Mark R, Pierel, Justin D R, Enzi, Wolfgang J R, Lokken, Martine, Gagliano, Alex, and Ryczanowski, Dan
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GRAVITATIONAL lenses , *COSMOGRAPHY , *SUPERNOVAE , *GALAXIES , *REDSHIFT - Abstract
The time-delay between appearances of multiple images of a gravitationally lensed supernova (glSN) is sensitive to the Hubble constant, |$H_0$|. As well as time-delays, a lensed host galaxy is needed to enable precise inference of |$H_0$|. In this work, we investigate the connection between discoverable lensed transients and their host galaxies. We find that the Legacy Survey of Space and Time (LSST) will discover at least 90 glSNe per year, of which 54 per cent will also have a strongly lensed host. The rates are uncertain by approximately 30 per cent depending primarily on the choice of the unlensed SN population and uncertainties in the redshift evolution of the deflector population, but the fraction of glSNe with a lensed host is consistently around a half. LSST will discover around 20 glSNe per year in systems that could plausibly have been identified by Euclid as galaxy–galaxy lenses before the discovery of the glSN. Such systems have preferentially longer time-delays and therefore are well suited for cosmography. We define a golden sample of glSNe Ia with time-delays over 10 d, image separations greater than 0.8 arcsec, and a multiply imaged host. For this golden sample, we find 91 per cent occur in systems that should already be discoverable as galaxy–galaxy lenses in Euclid. For cosmology with glSNe, monitoring Euclid lenses is a plausible alternative to searching the entire LSST alert stream. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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6. A power law solution for FLRW universe with observational constraints.
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Sharma, Lokesh Kumar, Parekh, Suresh, Maurya, Sanjay, Singh, Kuldeep, Ray, Saibal, Mehta, Kalyani C. K., and Trivedi, Vaibhav
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MARKOV chain Monte Carlo , *HUBBLE constant , *COSMOGRAPHY , *SPACETIME ,UNIVERSE - Abstract
This work analyzes a power law solution under f (R , T) gravity for an isotropic and homogeneous universe. To construct f (R , T) gravity model, we consider the functional form of f (R , T) as the sum of two independent functions of the Ricci scalar R and the trace of the energy–momentum tensor T, i.e. f (R , T) = R + ξ R T , with ξ being a positive constant where we study the cosmological model under the following two cases: (i) f 1 (R) = f 2 (R) = R and (ii) f 3 (T) = ξ T. In the framework of f (R , T) gravity with homogeneous and isotropic spacetime, the constructed model yields several features on application of the scale factor a = α t β . We employed the Markov Chain Monte Carlo (MCMC) approach to get model parameters α , β and H 0 over a redshift range of 0 ≤ z ≤ 1. 9 6 5. The model parameter's restricted values are listed below: H 0 = 6 7. 0 9 8 − 1. 7 9 2 + 2. 1 4 8 km s − 1 Mpc − 1 , H 0 = 6 7. 5 8 8 − 2. 1 7 0 + 2. 2 2 9 km s − 1 Mpc − 1 , H 0 = 6 6. 2 7 0 − 2. 1 8 1 + 2. 2 1 5 km s − 1 Mpc − 1 , H 0 = 6 5. 9 6 0 − 1. 8 3 4 + 2. 3 8 0 km s − 1 Mpc − 1 , H 0 = 6 6. 2 7 4 − 1. 8 6 4 + 2. 0 1 5 km s − 1 Mpc − 1 . The model was constrained using the Hubble parameter (H (z)) dataset, Baryon Acoustic Oscillations (BAO) dataset, Pantheon dataset, joint H (z) + Pantheon dataset and collective H (z) + BAO + Pantheon dataset. The results from the Planck collaboration group are consistent with these calculated Ho observed values. In order to study and analyze the model, we first look at how the energy circumstances affected our power law assumption. The validity of the model has also been evaluated using the O m diagnostic and the jerk parameter, which are state finding diagnostic tools. We find that the model under investigation agrees with the observed fingerprints within a certain range of constraints. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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7. A model-independent compact dynamical system formulation for exploring bounce and cyclic cosmological evolutions in f(R) gravity.
- Author
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Chakraborty, Saikat, Louw, Charlotte, S. Agrawal, A., and Dunsby, Peter K. S.
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DYNAMICAL systems , *COSMOGRAPHY , *PHYSICAL cosmology , *GRAVITY - Abstract
Using the dynamical systems approach together with the cosmographic parameters, we present a model-independent dynamical system formulation for cosmology in f(R) gravity. The formulation is model-independent in the sense that one needs to specify not a particular functional form of f(R) a-priori, but rather a particular cosmological evolution, which fixes the cosmography. In a sense, our approach is the way around the reconstruction method. This is shown using both non-compact and compact dynamical variables. The focus in this paper is on the compact analysis since we demonstrate the applicability of this formulation using examples of bouncing and cyclic cosmology. In particular, our analysis reveals, in a model-independent manner, the problem of achieving such cosmologies when the universe is globally spatially flat and devoid of matter. [ABSTRACT FROM AUTHOR]
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- 2024
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8. ‘Very Beautiful Land’: Malay Knowledge, Spanish Voyages, and Indigenous Presence in Iberian Mapping of New Guinea.
- Author
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Douglas, Bronwen
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GEOGRAPHIC names , *LOCAL knowledge , *VOYAGES & travels , *CARTOGRAPHY , *COSMOGRAPHY - Abstract
In 1545, Ortiz de Retes ‘took possession’ for Spain of a ‘very beautiful land’ southeast of Maluku and named it New Guinea. This article charts the interplay of local knowledge, Iberian experience, and European cosmography in the fragmentary knowing, naming, and mapping of New Guinea’s coasts in the two centuries after 1511. From Malay stories about the islands, coast, or land of the
papuas (Papuans) told to Portuguese and Spaniards in Maluku, empirical traces of New Guinea slowly accumulated during at least seven known voyages before 1606. Materialized in manuscript in travellers’ reports or charts and maps copied from lost Portuguese and Spanish master maps, knowledge of New Guinea was published in travel narratives, chronicles, and wider European cartography. My focus is Iberian encounters with places and their naming and mapping. But I also identify hints in maps and other texts of Indigenous agency in encounters and of ancient regional linkages. [ABSTRACT FROM AUTHOR]- Published
- 2024
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9. Tratado de la redondez de la tierra by Sor María de Ágreda (review).
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Rodríguez-Rincón, Luis
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- 2024
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10. Eschatologia Iranica I: From Zoroastrian Cosmos to Abbasid Madīnat al-Salām: A Journey through Utopia and Heterotopia †.
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Rezania, Kianoosh
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CITIES & towns , *COSMOGRAPHY , *PARADISE , *UTOPIAS , *EARTH (Planet) , *METAPHOR - Abstract
The history of imperial dynasties in West Asia is replete with examples of remarkable urban foundations. Two notable instances are the Sasanian Ardašīr-xwarrah and the Abbasid Madīnat al-Salām, which can be classified as cosmic cities or heterotopias. This article examines the utopian foundations of these heterotopias. To this end, it analyzes four religious and imperial spaces: the representation of the earth and sky in the Zoroastrian cosmography, Yima's Vara according to the Avestan texts, Ardašīr-xwarrah, and finally, Madīnat al-Salām. This investigation aims to ascertain the extent to which the spatial characteristics of each of these spaces have been utilized in the production of the subsequent architectural forms. Similarly, it examines the development of the cosmological and eschatological paradise in relation to the Achaemenian and Sasanian royal gardens. The theoretical framework of this study is based on Michael Foucault's notion of heterotopia, which has been further developed by Henri Lefebvre's theory of space. The conceptual metaphor theory offers a cognitive linguistic foundation for elucidating the projections of utopias and heterotopias onto one another. To this end, the article focuses on the conceptual metaphor GOD IS A KING. [ABSTRACT FROM AUTHOR]
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- 2024
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11. Breaking the mass-sheet degeneracy in strong lensing mass modelling with weak lensing observations.
- Author
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Khadka, Narayan, Birrer, Simon, Leauthaud, Alexie, and Nix, Holden
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GRAVITATIONAL lenses , *COVARIANCE matrices , *COSMOGRAPHY , *ANGULAR measurements , *PHYSICAL cosmology , *HUBBLE constant - Abstract
The Hubble constant (|$H_0$|), a crucial parameter in cosmology, quantifies the expansion rate of the universe so its precise measurement is important to understand the fundamental dynamics of our evolving universe. One of the major limitations of measuring |$H_0$| using time-delay cosmography is the presence of the mass-sheet degeneracy (MSD) in the lens mass modelling. We propose and quantitatively assess the use of galaxy–galaxy shear measurements to break the MSD in the strong lensing mass modelling. We use stacked galaxy–galaxy lensing profiles and corresponding covariance matrices from Huang et al. to constrain the MSD in lens mass modelling with a highly flexible mass profile. Our analyses show that if ideally all galaxy–galaxy lensing measurements from the Hyper Suprime-Cam survey can be used to constrain the MSD, we can achieve |$\sim 10~{{\ \rm per\ cent}}$| precision on the MSD constraint. We forecast that galaxy–galaxy lensing measurements from Legacy Survey of Space and Time (LSST)-like surveys can in general constrain the MSD with |$\sim 1\,\mathrm{ per\,cent}-3~{{\ \rm per\ cent}}$| precision. Furthermore, if we push weak lensing measurements to a lower angular scale of |$\sim 0.04\,\rm Mpc$| , a survey like LSST can provide |$\sim 1~{{\ \rm per\ cent}}$| precision on the MSD constraint, enabling a measurement of |$H_0$| at the 1 per cent level. We demonstrate that galaxy–galaxy weak lensing can robustly constrain the MSD independent of stellar kinematics of the deflector, with wide-field survey data alone. [ABSTRACT FROM AUTHOR]
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- 2024
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12. TABLEAUX DE GUERRE. LA REPRESENTACIÓN ARQUITECTÓNCA DE ESCENARIOS TERRITORIALES.
- Author
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Elvira Peña, Juan and Rodríguez Ramírez, Fernando
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COUNTERFACTUALS (Logic) , *MODERNITY , *COSMOGRAPHY , *HABITATS , *ECOSYSTEMS - Abstract
Drawing from the analysis of complex territorial dynamics, the use of scenarios and counterfactual narratives stands out as one of the most effective tools for unveiling potential futures of our habitat. To represent these narratives, this text explores the necessity of employing graphic formats that integrate strategic and cartographic analysis with a detailed depiction of all components--human, natural, and technological--that inhabit these spaces. The tableaux de guerre embodies many of the essential qualities for constructing cosmographies capable of communicating narratives within territorial ecosystems. The analysis of the transformation of this pictorial genre through various examples reveals numerous graphic and communicative tools that align with key moments of architectural modernity. These tools shed light on conceptual approaches and methods for representing territorial conflict, which gain renewed significance in the present day. [ABSTRACT FROM AUTHOR]
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- 2024
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13. Hacia una visión más amplia de la salud en el antropoceno. La epidemia de COVID-19 y el choque de cosmografías en Mato Grosso do Sul, Brasil.
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Dias-Scopel, Raquel, Scopel, Daniel, and Jean Langdon, Esther
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SARS-CoV-2 ,PARASITIC diseases ,ENVIRONMENTAL degradation ,SYNDEMICS ,COVID-19 pandemic ,INDIGENOUS peoples ,INDIGENOUS children - Abstract
Copyright of Revista del Museo de Antropología is the property of Museo de Antropologia - IDACOR and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2024
- Full Text
- View/download PDF
14. The Completo Tratado de Cosmographia y Geographia, by Juan de España (1561–1626).
- Author
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Mattza, Carmela
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RARE books ,COSMOGRAPHY ,STATE universities & colleges ,MANUSCRIPTS ,HISTORIANS - Abstract
In his Biblioteca nueva de los escritores aragoneses: que florecieron desde el año de 1600 hasta 1640 (Pamplona, 1799), Félix de Latassa y Ortín lists Juan de España, a Dominican friar and priest, as the author of Completo Tratado de Cosmographía y Geographía , a manuscript that never reached the printing house. In 1799, Latassa claims to have seen it in the Archivo de la Librería del Real Convento de Predicadores. Owing to the authority of Latassa, this manuscript work by Fray de España continued to be mentioned by various historians interested in the historiography of science in Spain. However, until now very little has been known about its content and fate. The purpose of this note is to introduce this work by Juan de España to the academic community and announce its discovery in the Rare Books and Manuscripts Library (RBML) of The Ohio State University (OSU) Library in Columbus, OH. [ABSTRACT FROM AUTHOR]
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- 2024
- Full Text
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15. Time-Delay Cosmography: Measuring the Hubble Constant and Other Cosmological Parameters with Strong Gravitational Lensing.
- Author
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Birrer, S., Millon, M., Sluse, D., Shajib, A. J., Courbin, F., Erickson, S., Koopmans, L. V. E., Suyu, S. H., and Treu, T.
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DARK energy , *GRAVITATIONAL lenses , *COSMOGRAPHY , *GRAVITATIONAL energy , *COSMOLOGICAL constant - Abstract
Multiply lensed images of a same source experience a relative time delay in the arrival of photons due to the path length difference and the different gravitational potentials the photons travel through. This effect can be used to measure absolute distances and the Hubble constant ( H 0 ) and is known as time-delay cosmography. The method is independent of the local distance ladder and early-universe physics and provides a precise and competitive measurement of H 0 . With upcoming observatories, time-delay cosmography can provide a 1% precision measurement of H 0 and can decisively shed light on the current reported 'Hubble tension'. This manuscript details the general methodology developed over the past decades in time-delay cosmography, discusses recent advances and results, and, foremost, provides a foundation and outlook for the next decade in providing accurate and ever more precise measurements with increased sample size and improved observational techniques. [ABSTRACT FROM AUTHOR]
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- 2024
- Full Text
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16. How to break the mass sheet degeneracy with the light curves of microlensed Type Ia supernovae.
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Weisenbach, Luke, Collett, Thomas, de Murieta, Ana Sainz, Krawczyk, Coleman, Vernardos, Georgios, Enzi, Wolfgang, and Lundgren, Andrew
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TYPE I supernovae , *LIGHT curves , *STARS , *GRAVITATIONAL lenses , *COSMOGRAPHY - Abstract
The standardizable nature of gravitationally lensed Type Ia supernovae (glSNe Ia) makes them an attractive target for time-delay cosmography, since a source with known luminosity breaks the mass sheet degeneracy. It is known that microlensing by stars in the lensing galaxy can add significant stochastic uncertainty to the unlensed luminosity, which is often much larger than the intrinsic scatter of the Type Ia population. In this work, we show how the temporal microlensing variations as the supernova (SN) disc expands can be used to improve the standardization of glSNe Ia. We find that SNe are standardizable if they do not cross caustics as they expand. We estimate that this will be the case for ≈6 doubly imaged systems and ≈0.3 quadruply imaged systems per year from the Vera Rubin Observatory (LSST). At the end of the 10 yr LSST survey, these systems should enable us to test for systematics in H 0 due to the mass sheet degeneracy at the |$1.00^{+0.07}_{-0.06}$| per cent level, or 1.8 ± 0.2 per cent if we can only extract time delays from the third of systems with counter-images brighter than i = 24 mag. [ABSTRACT FROM AUTHOR]
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- 2024
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17. Of comets and cosmology in Antonino Saliba's <italic>Nuova Figura di tutte le cose</italic> of 1582.
- Author
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Caruana, Joseph
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PHYSICAL cosmology , *SIXTEENTH century , *COMETS , *COSMOGRAPHY , *CARTOGRAPHERS - Abstract
Antonino Saliba, a sixteenth century cartographer hailing from the Maltese island of Gozo, published a map in 1582 espousing his cosmology. Its popularity at the time is attested via the multiple editions and copies that were produced in Europe. Numerous sky phenomena, amongst them comets, are portrayed in the map. This study presents a detailed analysis of Saliba's treatment of these phenomena, following the first comprehensive translation of the map's text to English. It elucidates the sources that Saliba used, clarifying and shedding further light on the views he held. Where possible, the comets mentioned by Saliba are identified and explained. Besides showing how Saliba wholly conformed to the Aristotelian and Ptolemaic representation of the world, in which respect he was quite orthodox, it is also shown for the first time that his work is significantly derived from previous and contemporary sources. [ABSTRACT FROM AUTHOR]
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- 2024
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18. Ratio aut auctores ? Reason, Authority and the Anagogic Ascent in the Twelfth Century.
- Author
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Cunningham, Jack
- Subjects
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ANCIENT philosophers , *COSMOGRAPHY , *HEGEMONY , *ANTHROPOLOGY , *SCHOLARS - Abstract
In the twelfth century, certain thinkers in the north of Europe were exalting human reason in a manner that had not been seen since the time of the ancient philosophers. Adelard of Bath, William of Conches, Thierry of Chartres and Peter Abelard all championed ratio in a way that seemed to challenge the hegemony of learning that rested securely with the authority of scripture, the testament of the Fathers and the canons of the established councils. In so doing, it represented a significantly different approach from the firmly established 'authors' (auctores) as certain scholars pursued their learning, and indeed even divine ascent, via other avenues. Even the visionary Hildegard von Bingen set enormous stock in rationality. This paper will discuss the use of reason for the anagogic ascent to the divine in order to trace its roots to a Platonic understanding of the universe in tandem with a highly positive anthropology that allowed for a bold reassessment of human capabilities, as well as a new appreciation of nature. [ABSTRACT FROM AUTHOR]
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- 2024
- Full Text
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19. CURLING – I. The influence of point-like image approximation on the outcomes of cluster strong lens modelling.
- Author
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Xie, Yushan, Shan, Huanyuan, Li, Nan, Li, Ran, Jullo, Eric, Su, Chen, Cao, Xiaoyue, Kneib, Jean-Paul, Acebron, Ana, He, Mengfan, Yao, Ji, Wang, Chunxiang, Li, Jiadong, and Li, Yin
- Subjects
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PROPERTIES of matter , *GRAVITATIONAL lenses , *GALAXY clusters , *MEDIAN (Mathematics) , *DARK energy , *EQUATIONS of state , *COSMOGRAPHY - Abstract
Cluster-scale strong lensing is a powerful tool for exploring the properties of dark matter and constraining cosmological models. However, due to the complex parameter space, pixelized strong lens modelling in galaxy clusters is computationally expensive, leading to the point-source approximation of strongly lensed extended images, potentially introducing systematic biases. Herein, as the first paper of the ClUsteR strong Lens modelIng for the Next-Generation observations (CURLING) program, we use lensing ray-tracing simulations to quantify the biases and uncertainties arising from the point-like image approximation for JWST -like observations. Our results indicate that the approximation works well for reconstructing the total cluster mass distribution, but can bias the magnification measurements near critical curves and the constraints on the cosmological parameters, the total matter density of the universe Ωm, and dark energy equation of state parameter w. To mitigate the biases, we propose incorporating the extended surface brightness distribution of lensed sources into the modelling. This approach reduces the bias in magnification from 46.2 per cent to 0.09 per cent for μ ∼ 1000. Furthermore, the median values of cosmological parameters align more closely with the fiducial model. In addition to the improved accuracy, we also demonstrate that the constraining power can be substantially enhanced. In conclusion, it is necessary to model cluster-scale strong lenses with pixelized multiple images, especially for estimating the intrinsic luminosity of highly magnified sources and accurate cosmography in the era of high-precision observations. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
20. The interacting vacuum energy models with spatial curvature: A dynamical system perspective with observational constraints.
- Author
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Singh, Ashutosh, Krishnannair, Syamala, and Mishra, Krishna Chandra
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DYNAMICAL systems , *DARK energy , *EXPANDING universe , *CURVATURE , *DARK matter , *GEOMETRIC modeling - Abstract
In this paper, we study the cosmic dynamics of varying vacuum models where the dark matter interacts with the vacuum energy. We consider the homogeneous and isotropic spacetime with spatial curvature and apply the dynamical system technique to the varying vacuum models by specifying the form of energy exchange rate (Q) between the dark energy and dark matter. Further, we utilize the cosmographic parameters and statefinder parameters in the terms of dynamical variables of the cosmological dynamical system to explore the cosmic dynamics of the universe. The Milne universe solution exists as a consequence of spatially curved geometry in the model. The models also yield radiation- matter- and dark energy-dominated phases in order and thus explain the late-time accelerated expansion of the universe. The strength of interaction terms will affect the existence of cosmological phases in the model but there will always be an attractor corresponding to the accelerating universe. We numerically solve the system to illustrate the evolution of cosmological quantities and dynamical variables in the models. The role of curvature is visible during the transition from the decelerated phase into the accelerating phase. The numerical solutions affirm that the cosmological parameters in the models are consistent with their corresponding observational values. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
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21. Inferno, Purgatory, and Gehinnom: Shared Cosmographic Spaces in Italian-Jewish Descriptions of Hell.
- Author
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Kallenbach, Avi
- Subjects
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CHRISTIAN life , *JEWISH studies , *JEWISH way of life , *INTELLECTUAL life , *COSMOGRAPHY - Abstract
This article addresses the explicit utilization of Christian discourse about hell and purgatory within the writings of sixteenth-century Italian Jewry. The vast majority of Jewish texts about hell (gehinnom) from the period ignore Christian discourse on the topic or only allude to it obliquely. Three unpublished Hebrew sources, two of them drawn from informal marginalia, demonstrate a more open approach, in which the infernal cosmography and terminology of Christianity are consciously and explicitly appropriated. These sources not only serve as important case studies for Jewish understandings of hell during the period but also can shed broader light on the types of cultural maneuvering that characterized Jewish cultural life in the Christian milieu of Cinquecento Italy. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
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22. Cosmography of the Minimally Extended Varying Speed-of-Light Model.
- Author
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Lee, Seokcheon
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COSMOGRAPHY ,SPEED of light ,TAYLOR'S series ,LUMINOSITY distance ,HUBBLE constant - Abstract
Cosmography, as an integral branch of cosmology, strives to characterize the Universe without relying on pre-determined cosmological models. This model-independent approach utilizes Taylor series expansions around the current epoch, providing a direct correlation with cosmological observations and the potential to constrain theoretical models. Various observable quantities in cosmology can be described as different combinations of cosmographic parameters. Furthermore, one can apply cosmography to models with a varying speed of light. In this case, the Hubble parameter can be expressed by the same combination of cosmographic parameters for both the standard model and varying speed-of-light models. However, for the luminosity distance, the two models are represented by different combinations of cosmographic parameters. Hence, luminosity distance might provide a method to constrain the parameters in varying speed-of-light models. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
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23. From Fenye to Fengshui: Applying Correlative Cosmography in Late Imperial China.
- Author
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Brown, Tristan G.
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COSMOGRAPHY ,GEOMANCY ,IMPERIALISM ,ASTRONOMY ,GAZETTEERS - Abstract
This paper documents the resilience of fenye (分野, lit., "field allocation") and its applications through the nineteenth century in China. Despite literati (and eventually imperial) criticisms that the fenye system of correlative cosmography was outdated and unworthy of belief, fenye retained a sizeable audience through the close of the Qing period. At the top, the Qing imperial state continued to reference fenye correlations in its official communications late into the dynasty. In local society, literati looked to newly issued dynastic sources of astrological knowledge to update local gazetteers; in the nineteenth century, these trends were pronounced along frontier areas lacking longstanding gazetteer records. Finally, people engaged in the practice of fengshui looked to fenye knowledge to update the values and layout of the compass, the historical origins of which related to geomantic practices. In the Qing period, the compass was both theoretically and physically altered under the influence of Jesuit-introduced "Western Learning" (Xixue 西學). The paper contends that the status of fenye in pre-twentieth century China was seldom an allor-nothing proposition between a celebrated component of imperial orthodoxy and an outdated relic in inexorable decline: people critiqued fenye, used fenye, and updated fenye. [ABSTRACT FROM AUTHOR]
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- 2024
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24. Introduction: Empire under the Night Sky: Recording Astral-Cosmography in Qing Dynasty China, 17th – 19th Centuries.
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Brown, Tristan G.
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COSMOGRAPHY ,QING dynasty, China, 1644-1912 ,CULTURAL relations ,HISTORIOGRAPHY ,POLITICAL debates - Published
- 2024
- Full Text
- View/download PDF
25. Miguel Donoso Rodríguez, Mauricio Onetto Pavez y Andrés Vélez Posada, Juan Ladrillero y Francisco Cortés Ojea, Derroteros del Viaje del Estrecho de Magallanes (1557-1559)
- Author
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Mario Graña Taborelli
- Subjects
literature ,colonial history ,geopolitics ,Latin American studies ,cosmography ,Anthropology ,GN1-890 ,Latin America. Spanish America ,F1201-3799 - Published
- 2024
- Full Text
- View/download PDF
26. Embedding the ΛCDM framework in non-minimal f(Q) gravity with matter-coupling
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N.S. Kavya and V. Venkatesha
- Subjects
f(Q,Lm) gravity ,Reconstruction ,ΛCDM model ,Cosmography ,Physics ,QC1-999 - Abstract
In exploring the dynamics of the Universe, modified gravity theories offer an alternative explanation for dark energy. Although the ΛCDM model has served as a foundational description for understanding the Universe, it also has its limitations. Our primary objective in this study is to overcome these shortcomings and reconstruct the ΛCDM Universe. We aim to achieve this by embedding the ΛCDM scenario within a modified gravity framework. Here, the investigation is conducted within the framework of novel non-minimal coupling of f(Q) gravity. A generic non-minimal form is considered, expressed in terms of two arbitrary functions f1(Q) and f2(Q). Analytic solutions are derived to mimic the ΛCDM paradigm. Finally, through cosmographic analysis, the models are validated against observational results.
- Published
- 2024
- Full Text
- View/download PDF
27. Cosmography of the Minimally Extended Varying Speed-of-Light Model
- Author
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Seokcheon Lee
- Subjects
cosmography ,varying speed-of-light models ,standard cosmological model ,Hubble parameter ,Astronomy ,QB1-991 - Abstract
Cosmography, as an integral branch of cosmology, strives to characterize the Universe without relying on pre-determined cosmological models. This model-independent approach utilizes Taylor series expansions around the current epoch, providing a direct correlation with cosmological observations and the potential to constrain theoretical models. Various observable quantities in cosmology can be described as different combinations of cosmographic parameters. Furthermore, one can apply cosmography to models with a varying speed of light. In this case, the Hubble parameter can be expressed by the same combination of cosmographic parameters for both the standard model and varying speed-of-light models. However, for the luminosity distance, the two models are represented by different combinations of cosmographic parameters. Hence, luminosity distance might provide a method to constrain the parameters in varying speed-of-light models.
- Published
- 2024
- Full Text
- View/download PDF
28. Dynamical Analysis of the Redshift Drift in FLRW Universes.
- Author
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Lobo, Francisco S. N., Mimoso, José Pedro, Santiago, Jessica, and Visser, Matt
- Subjects
- *
FRIEDMANN equations , *REDSHIFT , *DARK energy , *EXPANDING universe , *COSMOGRAPHY ,UNIVERSE - Abstract
Redshift drift is the phenomenon whereby the observed redshift between an emitter and observer comoving with the Hubble flow in an expanding FLRW universe will slowly evolve—on a timescale comparable to the Hubble time. In a previous article, three of the current authors performed a cosmographic analysis of the redshift drift in an FLRW universe, temporarily putting aside the issue of dynamics (the Friedmann equations). In the current article, we add dynamics while still remaining within the framework of an exact FLRW universe. We developed a suitable generic matter model and applied it to both standard FLRW and various dark energy models. Furthermore, we present an analysis of the utility of alternative cosmographic variables to describe the redshift drift data. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
29. A Tale of Two Cities: Jābarṣā/Jābalqā and Their Metamorphoses.
- Author
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Sariyannis, Marinos
- Abstract
Although the twin cities at the west and east edges of the world, Jābarṣā (Jābarṣ, Jābalṣā, Jāburṣā) and Jābalqā (Jābalq, Jābarqā), are somehow commonplace in Islamicate cosmographies throughout the medieval period, surprisingly little research exists on them. The main lines of the legend, as formulated by the medieval traditionalists and cosmographers, are as follows: there are two cities at the uttermost east and west parts of the inhabited world, where the sun rises and sets. The inhabitants suffer from the extreme heat and the noise made by the sun in its rising and setting; they have to hide in caves and make their own noise to be protected. In the various versions of the story, some elements lack or differ; the cities are often connected with other legends related to the edge of the world, such as Dhū l-Qarnayn, the Gog and Magog/Yājūj and Mājūj, Muḥammad's night journey, the remnants of the ʿĀd tribe, and so forth. The paper traces the origins of the legend, its formation and various formulations during the Islamic Middle Ages, the significant change it underwent in the late medieval Illuminationist (ishrāqī) philosophy, and finally its survival and fading away to a status of folktale utopia in Ottoman literature and scholarship. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
30. Habitability as a historical category for interpreting the Anthropocene.
- Author
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Onetto Pavez, Mauricio
- Subjects
- *
TEMPERATE climate , *SIXTEENTH century , *COLUMNS , *IMAGINATION , *COSMOGRAPHY - Abstract
The article examines the development of a new discourse on habitability in the sixteenth century, which breaks with the ancient notion that distinguished between habitable and uninhabitable spaces according to their climate and location. In it, a new conception of the world as completely habitable and exploitable is articulated, and the European ideal of a temperate climate as a reference to characterize the territories and inhabitants of various latitudes is put forward. I considered more than sixty texts related to cosmography, and a hundred maps and diagrams that were published and circulated as Europe expanded around the globe in the early modern period, and that exhibit new semantics and meanings about habitability. This study, through the analysis of these specific sources, aims to contribute to the debate on the origins of the Anthropocene and the political and imaginative logic that enables its development. The author suggests that the discursive pillars that shaped modern thinking about habitability were crucial in giving life to the ideas of extractivism, speculation, and unlimited connectivity that structures the Anthropocene. • The study contributes to our understanding of how this discourse about habitability helped to structure thinking about the planet as an infinite reservoir of resources. • The modern habitability discourse serves to interpret the Anthropocene. • The American continent played a role in breaking the old discourse of habitability and introducing a new definition of it. • The discourse of habitability of early modernity proclaims the possibility of inhabiting the whole world and that all spaces can be exploitable and profitable if they are populated. • The modern habitability discourse imposes the temperate European condition as the ideal for inhabiting the Earth. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
31. Cosmography for various parametrizations of dark energy equation of state.
- Author
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Sardar, Alok, Roy, Tanusree, and Debnath, Ujjal
- Subjects
- *
EQUATIONS of state , *COSMOGRAPHY , *PHYSICAL cosmology , *DARK energy , *ENERGY policy , *DARK matter - Abstract
The concept of dark energy (DE) emerged as a result of confirming the accelerated expansion of the universe. Since then, numerous models have been developed to explore the origin and nature of DE. In this study, we investigate several recent cosmological models (Models 1–9) based on the parametrization of the DE equation of state. Our analysis focuses on a homogeneous, isotropic flat universe comprising DE, dark matter (DM), and radiation. We assume the separate conservation of the dark components (DE and DM) and radiation. By employing various parametrizations of ω D (z) , we derive the corresponding Hubble function E (z). To understand the cosmic expansion history of the universe in a model-independent manner, we employ cosmography as an approach. We express important cosmographic parameters such as deceleration, jerk, snap, and lerk parameters in terms of the Hubble rate E (z) and its derivative up to the fourth order. Additionally, we examine the statefinder parameter and O m diagnostics to distinguish between different types of DE models. Finally, we compare the physical interpretations of these diagnostic parameters with the standard Λ CDM model to assess the viability of each model. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
32. Augmenting the power of time-delay cosmography in lens galaxy clusters by probing their member galaxies: II. Cosmic chronometers.
- Author
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Bergamini, P., Schuldt, S., Acebron, A., Grillo, C., Meštrić, U., Granata, G., Caminha, G. B., Meneghetti, M., Mercurio, A., Rosati, P., Suyu, S. H., and Vanzella, E.
- Subjects
- *
GALAXY clusters , *COSMOGRAPHY , *GALAXIES , *CHRONOMETERS , *HUBBLE constant - Abstract
We present a novel approach to measuring the expansion rate and the geometry of the Universe, which combines time-delay cosmography in lens galaxy clusters with pure samples of 'cosmic chronometers' by probing the member galaxies. The former makes use of the measured time delays between the multiple images of time-varying sources strongly lensed by galaxy clusters, while the latter exploits the most massive and passive cluster member galaxies to measure the differential time evolution of the Universe. We applied two different statistical techniques, adopting realistic errors on the measured quantities, to assess the accuracy and the gain in precision on the values of the cosmological parameters. We demonstrate that the proposed combined method allows for a robust and accurate measurement of the value of the Hubble constant. In addition, this provides valuable information on the other cosmological parameters thanks to the complementarity between the two different probes in breaking parameter degeneracies. Finally, we showcased the immediate observational feasibility of the proposed joint method by taking advantage of the existing high-quality spectro-photometric data for several lens galaxy clusters. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
33. GEMEINSAME ORIENTIERUNG IN DER WELT: DIE KRAFT VON WELTBILDERN.
- Author
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SOWA, HUBERT
- Subjects
- *
RELIGIOUS communities , *POLITICAL image , *COSMOGRAPHY , *EDUCATIONAL relevance , *GERMAN language - Abstract
The German term "Weltbild", like the modern term "Weltanschauung", is difficult to translate linguistically. "Weltbilder" are transcendent borderline images of human visualization. They are either cartographic or cosmographic representations of human spatial experience or representations of conceptual and spiritual "inner worlds", or also direct performative orchestrations of images by political or religious communities (geography, cosmography, encyclopaedia). They have an orientation function, a community-building function, preform ways of thinking, perceptions, evaluations, feelings and actions and are therefore also of general educational, psychotherapeutic and art educational relevance. The text distinguishes between different categories of worldviews and shows how "Weltbilder" and "Weltanschauungen" become historically effective. [ABSTRACT FROM AUTHOR]
- Published
- 2024
34. Les territoires de l’hétérodoxie dans le second tome de la Cosmographie universelle (1575).
- Author
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Viaud, Alicia and Catel, Thibault
- Subjects
RELIGIOUS differences ,POLITICAL theology ,RHETORIC & politics ,POLEMICS ,RELIGIONS - Abstract
Copyright of Acta Universitatis Lodziensis: Folia Litteraria Romanica is the property of Wydawnictwo Uniwersytetu Lodzkiego and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
35. Le « monstre de Cracovie » : savoirs, religion et politique dans la Cosmographie universelle (1575) de François de Belleforest.
- Author
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Bourdon, Étienne
- Subjects
POLITICAL geography ,TERATOLOGY ,PROTESTANTISM ,ENGRAVING ,PROTESTANTS - Abstract
Copyright of Acta Universitatis Lodziensis: Folia Litteraria Romanica is the property of Wydawnictwo Uniwersytetu Lodzkiego and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
36. Lensed Type Ia supernovae in light of SN Zwicky and iPTF16geu.
- Author
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Sainz de Murieta, Ana, Collett, Thomas E, Magee, Mark R, Weisenbach, Luke, Krawczyk, Coleman M, and Enzi, Wolfgang
- Subjects
- *
TYPE I supernovae , *ANGULAR distance , *COSMOGRAPHY , *SUPERNOVAE - Abstract
Strong gravitationally lensed supernovae (glSNe) are a powerful probe to obtain a measure of the expansion rate of the Universe, but they are also extremely rare. To date, only two glSNe with multiple images strongly lensed by galaxies have been found, but their short time delays make them unsuitable for cosmography. Here, we simulate a realistic catalogue of lensed supernovae and study the characteristics of the population of detectable systems for different surveys. Compared to previous studies, our simulations also account for the effect of microlensing and its impact on the glSNe yields. We show that the properties of glSNe in shallow surveys (such as the Zwicky Transient Facility) are determined by the need for large magnifications, which favours systems of four images with short time delays and low image separations. This picture is consistent with the properties of iPTF16geu and SN Zwicky, but is not representative of the population found in deeper surveys, which are limited by the volume of the Universe that is strongly lensed. For deeper surveys, such as the Legacy Survey of Space and Time (LSST), glSNe show longer time delays and greater angular separations, and the inclusion of microlensing results in 8 per cent of glSNe becoming demagnified under the detection threshold. In the 10 yr of the survey LSST should be able to find ≈180 systems, of which 70 will be suited for cosmography enabling a ≈1.2 per cent precision H 0 measurement with LSST glSNe. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
37. Probing cosmic homogeneity in the Local Universe.
- Author
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Dias, Bruno L, Avila, Felipe, and Bernui, Armando
- Subjects
- *
HOMOGENEITY , *ASTRONOMICAL surveys , *LARGE scale structure (Astronomy) , *COSMOGRAPHY ,UNIVERSE - Abstract
We investigate the transition scale to homogeneity, R H, using as cosmic tracer the spectroscopic sample of blue galaxies from the Sloan Digital Sky Survey (SDSS). Considering the spatial distribution of the galaxy sample, we compute the two point correlation function ξ(r), the scaled counts in spheres |$\mathcal {N}(\lt r)$| , and the fractal dimension |$\mathcal {D}_2(r)$| to quantify the homogeneity scale in the Local Universe (0.04 < z < 0.20). The sample in analysis is compared with random and mock catalogues with the same geometry, and the same number of synthetic cosmic objects as the data set, to calculate the covariance matrix for the errors determination. The criteria adopted for the transition-to-homogeneity follows the literature, it is attained when |$\mathcal {D}_2(r)$| reaches the 1 per cent level of the limit value 3 (i.e. where it reaches 2.97) as the scale increases. We obtain R H = 70.33 ± 10.74 Mpc h−1, at the effective redshift z eff = 0.128, for a sample containing |$150\, 302$| SDSS blue galaxies with 0.04 < z < 0.20. Additionally, we perform robustness tests by analysing the homogeneity scale in sub-volumes of the original one, obtaining coherent results; we also check for a possible artefact in our procedure examining a homogeneous synthetic data set as a pseudo-data, verifying that such systematic is absent. Because our analyses concentrate in data at low redshifts, z < 0.20, we find interesting to use cosmography to calculate the radial comoving distances; therefore in this subject our analyses do not use fiducial cosmological model. For completeness, we evaluate the difference of the comoving distances estimation using cosmography and fiducial cosmology. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
38. Cosmography from well-localized fast radio bursts.
- Author
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Fortunato, Jéferson A S, Hipólito-Ricaldi, Wiliam S, and dos Santos, Marcelo V
- Subjects
- *
SOLAR radio bursts , *COSMOGRAPHY , *INTERSTELLAR medium , *HUBBLE constant , *COSMOLOGICAL distances , *ASTROPHYSICS - Abstract
Fast radio bursts (FRBs) are millisecond-duration pulses occurring at cosmological distances that have emerged as prominent cosmological probes due to their dispersion measure (DM) evolution with redshift. In this work, we use cosmography, a model-independent approach to describe the evolution of the Universe, to introduce the cosmographic expansion of the DM– z relation. By fitting two different models for the intergalactic medium and host contributions to a sample of 23 well-localized FRBs, we estimate the kinematic parameters |$q_0=-0.59^{+0.20}_{-0.17}$| , |$j_0=1.08^{+0.62}_{-0.56}$| , s 0 = −2.1 ± 7.0, and H 0 = 69.4 ± 4.7 achieving a precision of 6 per cent and 7 per cent for the Hubble constant depending on the models used for contributions. Furthermore, we demonstrate that this approach can be used as an alternative and complementary cosmological model-independent method to revisit the long-standing 'Missing Baryons' problem in astrophysics by estimating that 82 per cent of the baryonic content of the Universe resides in the intergalactic medium, within 7 per cent and 8 per cent precision, according to the contribution models considered here. Our findings highlight the potential of FRBs as a valuable tool in cosmological research and underscore the importance of ongoing efforts to improve our understanding of these enigmatic events. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
39. Yûsuf bin Muhammed İbnü'l-Vekîl el-Milevî (öl. 1129/1717'den sonra)'nin Acâyibü'l-Mahlûkât Tercümesi: Acâyibü'l-Mahlûkât ve Garâyibü'l-Mevcûdât.
- Author
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BARDAKÇI, Ramazan and AKSAKALOĞLU, Öznur
- Abstract
Copyright of RumeliDE Journal of Language & Literature Research / RumeliDE Dil ve Edebiyat Araştırmaları Dergisi is the property of RumeliDE Uluslararasi Hakemli Dil & Edebiyat Arastirmalari Dergisi and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
- Full Text
- View/download PDF
40. The Shape of the Earth and Geographical Exploration
- Author
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Barrado Navascués, David, ORCHISTON, WAYNE, Series Editor, ROTHENBERG, MARC, Series Editor, CUNNINGHAM, CLIFFORD, Series Editor, EVANS, JAMES, Editorial Board Member, GOSS, MILLER, Editorial Board Member, HAMACHER, DUANE, Editorial Board Member, LEQUEUX, JAMES, Editorial Board Member, MITTON, SIMON, Editorial Board Member, RUGGLES, CLIVE, Editorial Board Member, TRIMBLE, VIRGINIA, Editorial Board Member, WOLFSCHMIDT, GUDRUN, Editorial Board Member, BELL, TRUDY, Editorial Board Member, DEVORKIN, DAVID, Editorial Board Member, and Barrado Navascués, David
- Published
- 2023
- Full Text
- View/download PDF
41. The Measure of Longitude: From Iberia to Albion
- Author
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Barrado Navascués, David, ORCHISTON, WAYNE, Series Editor, ROTHENBERG, MARC, Series Editor, CUNNINGHAM, CLIFFORD, Series Editor, EVANS, JAMES, Editorial Board Member, GOSS, MILLER, Editorial Board Member, HAMACHER, DUANE, Editorial Board Member, LEQUEUX, JAMES, Editorial Board Member, MITTON, SIMON, Editorial Board Member, RUGGLES, CLIVE, Editorial Board Member, TRIMBLE, VIRGINIA, Editorial Board Member, WOLFSCHMIDT, GUDRUN, Editorial Board Member, BELL, TRUDY, Editorial Board Member, DEVORKIN, DAVID, Editorial Board Member, and Barrado Navascués, David
- Published
- 2023
- Full Text
- View/download PDF
42. Plus Ultra: The Iberian Explorations and Cartography
- Author
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Barrado Navascués, David, ORCHISTON, WAYNE, Series Editor, ROTHENBERG, MARC, Series Editor, CUNNINGHAM, CLIFFORD, Series Editor, EVANS, JAMES, Editorial Board Member, GOSS, MILLER, Editorial Board Member, HAMACHER, DUANE, Editorial Board Member, LEQUEUX, JAMES, Editorial Board Member, MITTON, SIMON, Editorial Board Member, RUGGLES, CLIVE, Editorial Board Member, TRIMBLE, VIRGINIA, Editorial Board Member, WOLFSCHMIDT, GUDRUN, Editorial Board Member, BELL, TRUDY, Editorial Board Member, DEVORKIN, DAVID, Editorial Board Member, and Barrado Navascués, David
- Published
- 2023
- Full Text
- View/download PDF
43. Toward a Broader View of Health in the Anthropocene: The COVID-19 Syndemic and the Clash of Cosmographies in Mato Grosso do Sul, Brazil
- Author
-
Raquel Dias-Scopel, Daniel Scopel, and Esther Jean Langdon
- Subjects
cosmography ,indigenous peoples ,syndemics ,covid-19 ,structural violence ,indigenous agency ,Anthropology ,GN1-890 ,Medicine (General) ,R5-920 - Abstract
The continual expansion of developmental frontiers has impacted dramatically upon Indigenous health in Brazil. When the COVID-19 pandemic struck in Mato Grosso do Sul, its Indigenous populations were already living in circumstances of environmental degradation, food insecurity, racism, and structural violence. The synergistic interaction between the SARS-CoV-2 virus, other pathogens, and biosocial factors resulted in what Singer (2010) terms as ‘syndemics’. In the case of Mato Grosso do Sul, it brought about a substantial increase in the disease burden of Indigenous Peoples, where child malnutrition, obesity, hypertension, respiratory and parasitic diseases, and maternal mortality appear at higher rates than in the non-Indigenous population. This Research Article discusses the coping and participatory strategies that were employed by Indigenous Peoples early in the pandemic. Efforts by Indigenous Peoples to address the pandemic reveal ‘a clash’ between Indigenous and Colonial cosmographies with regard to notions of the body and health. Considering the Indigenous perspective on the relation between territoriality and health, the analysis highlights asymmetries of power and embodied vulnerabilities and the limits of the Anthropocene as a global perspective.
- Published
- 2023
- Full Text
- View/download PDF
44. Cosmographic and phase-space analysis of dynamical Chern–Simons modified and fractal gravities.
- Author
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Usman, Muhammad and Jawad, Abdul
- Subjects
- *
DARK energy , *EXPANDING universe , *DIFFERENTIAL forms , *DARK matter , *GRAVITY , *PHASE space , *DIFFERENTIAL equations - Abstract
We examine the cosmic scenario of interacting Kaniadakis holographic dark energy in dynamical Chern–Simons modified gravity and the fractal universe. For this purpose, the Hubble, deceleration, coincidence, equation-of-state and jerk parameters have been evaluated in view of the redshift parameter. It is observed that deceleration parameter (q) evaluates the accelerated expansion of the universe in both gravities. The coincidence parameter (u) exhibits the transition of behavior from dark matter to dark energy era of the universe. The behavior of the equation-of-state parameter (ω θ) describes the quintessence and vacuum regions of the universe in both gravities for maximum choices of the interacting parameters. The jerk parameter shows the correspondence of the given model with Λ CDM model and other standard models in both gravities. All the parameters exhibit consistent behavior with the Planck 2018 data. We also analyze the dynamical stability in both frameworks by formulating dynamical models in the form of a system of differential equations and evaluating their corresponding critical points. Critical points of both models are stable and phase plots indicate attractor behavior that implies stability of the models. Further, stability conditions of both models signify the accelerating expansion of the universe. In addition, we discuss the thermodynamics of this model with the generalized second law and find its validity in both frameworks. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
45. Joint Constraints on the Hubble Constant, Spatial Curvature, and Sound Horizon from the Late-time Universe with Cosmography.
- Author
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Zhang, Kaituo, Zhou, Tianyao, Xu, Bing, Huang, Qihong, and Yuan, Yangsheng
- Subjects
- *
COSMOGRAPHY , *TYPE I supernovae , *PADE approximant , *CURVATURE , *HUBBLE constant , *CURVATURE cosmology , *REDSHIFT , *COSMIC background radiation ,UNIVERSE - Abstract
In this paper, using the latest Pantheon+ sample of Type Ia supernovae, baryon acoustic oscillation measurements, and observational Hubble data, we carry out a joint constraint on the Hubble constant H 0, the spatial curvature ΩK, and the sound horizon at the end of the drag epoch r d. To be model-independent, four cosmography models—i.e., the Taylor series in terms of redshift y 1 = z /(1 + z), y 2 = arctan (z) , y 3 = ln (1 + z) , and the Padé approximants—are used without the assumption of a flat Universe. The results show that H 0 is anticorrelated with ΩK and r d, indicating that smaller ΩK or r d would be helpful in alleviating the Hubble tension. The values of H 0 and r d are consistent with the estimate derived from the Planck cosmic microwave background data based on the flat ΛCDM model, but H 0 is in 2.3 ∼ 3.0 σ tension with that obtained by Riess et al. in all these cosmographic approaches. Meanwhile, a flat Universe is preferred by the present observations under all approximations except the third order of y 1 and y 2 of the Taylor series. Furthermore, according to the values of the Bayesian evidence, we found that the flat ΛCDM remains to be the most favored model by the joint data sets, and the Padé approximant of order (2,2), the third order of y 3 and y 1 are the top three cosmographic expansions that fit the data sets best, while the Taylor series in terms of y 2 are essentially ruled out. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
46. Tensions with the flat ΛCDM model from high-redshift cosmography.
- Author
-
Bargiacchi, G, Dainotti, M G, and Capozziello, S
- Subjects
- *
GAMMA ray bursts , *COSMOGRAPHY , *REDSHIFT , *COSMIC background radiation , *HUBBLE constant , *TYPE I supernovae , *DARK matter - Abstract
The longstanding search for the cosmological model that best describes the Universe has been made more intriguing since the recent discovery of the Hubble constant, H 0, tension observed between the value of H 0 from the Cosmic Microwave Background and from type Ia supernovae (SNe Ia). Hence, the commonly trusted flat Λ cold dark matter (ΛCDM) model is under investigation. In this scenario, cosmography is a very powerful technique to investigate the evolution of the Universe without any cosmological assumption, thus revealing tensions between observational data and predictions from cosmological models in a completely model-independent way. We here employ a robust cosmographic technique based on an orthogonal logarithmic polynomial expansion of the luminosity distance to fit quasars (QSOs) alone and QSOs combined with Gamma-Ray Bursts (GRBs), SNe Ia, and Baryon Acoustic Oscillations. To apply QSOs and GRBs as probes we use, respectively, the Risaliti–Lusso relation between ultraviolet and X-ray luminosities and the 'Dainotti GRB 3D relation' among the rest-frame end time of the X-ray plateau emission, its corresponding luminosity, and the peak prompt luminosity. We also correct QSOs and GRBs for selection biases and redshift evolution and we employ both the traditional Gaussian likelihood and the newly discovered best-fitting likelihoods for each probe investigated. This comprehensive analysis reveals a strong tension (|$\gt 4 \, \sigma$|) between our data sets and the flat ΛCDM model proving the power of both the cosmographic approach and high-redshift sources, such as QSOs and GRBs, which can probe the Universe at early epochs. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
47. Apocalypticism and imperial criticism: (re)reading the Dürr-i meknūn (The Hidden Pearl , 1472–73) in the context of Ottoman–Akkoyunlu imperial confrontation.
- Author
-
Turan, Ebru
- Subjects
- *
COSMOGRAPHY , *CRITICISM , *PROPHECY , *READING , *PHYSICAL cosmology , *METAPHYSICAL cosmology - Abstract
The Dürr-i meknūn (The Hidden Pearl) is one of the most fascinating and enigmatic works of fifteenth-century Ottoman literature. It consists of a digest of Islamic cosmology and cosmography engaging with a wide array of subjects, beginning with the Creation and concluding with the Last Judgement. The Dürr-i meknūn has long been attributed to the mystic and scholar Ahmed Bīcān and has accordingly been dated to between 1453 and 1466. However, building on the most recent research, which shows that Ahmed Bīcān could not possibly have penned the Dürr and that the text is in fact anonymous, this article provides a critical reading and new dating of the text by focusing on the apocalyptic prophecies found in Chapter 16. Using a novel methodology that integrates contextual and historical reading, with computations of Arabic gematria, my analysis demonstrates that the Dürr was composed in 1472–73, in anticipation of the Ottoman–Akkoyunlu confrontation at the Battle of Başkent, when fears were running high that the end of Ottoman rule was at hand. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
48. Wandering the Magnetosphere.
- Author
-
Koenig, Ingrid
- Subjects
- *
DRAWING , *MAGNETOSPHERE , *COSMOGRAPHY , *SOLAR energy ,UNIVERSE - Abstract
The article focuses the artwork, "Wandering the Magnetosphere," explores the intricate network of physical forces and bio-geo-political time. It reports the features a living cosmography to depict movement across time and the relationship between Earth's internal energy and the solar energy of the cosmos.
- Published
- 2023
- Full Text
- View/download PDF
49. The Histoire universelle of Agrippa d'Aubigné (1616–1626), or when the historian becomes a cosmograph.
- Author
-
Pot, Olivier
- Subjects
- *
HISTORIANS , *COSMOPOLITANISM , *SIXTEENTH century , *PERSONAL property , *GLOBALIZATION ,ROMAN Empire, 30 B.C.-A.D. 476 - Abstract
At the end of the sixteenth century, a new conception of history appeared that Jean Bodin theorized in France as geographistory. Building on the discoveries of the New World and the subsequent onset of globalization, and drawing on Polybius's Histories as well as Stoic cosmopolitanism, geographistory aimed to impose a coherent and authentic order ("metre en ordre des choses tant désordonnees") on the puzzle of fortuitous historical events by appealing to the immanent and material nature of things, presented as a kind of Fortune through which events would realize their universal telos. Configured after the model of the destiny of the Roman Empire, which at his apogee dominated all the world urbi et orbi, the growing world's unity and universality would therefore providentially substitute for both God's miraculous intervention and the Aristotelian epic hero's action; which had failed in the eyes of Calvinists because of the historic fiasco of King Henri IV. In that respect, the poet Agrippa d'Aubigné hoped, with his Histoire universelle, to endow history with a new direction and progress (as Bacon and, still later, Bossuet will do) by methodically combining the parameters of time and space, in the manner of panoptic and rotating Baroque perspective. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
50. Hernando Colón's Cosmography
- Author
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Kimmel, Seth, author
- Published
- 2024
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