Results 81 to 90 of about 92,572 (312)

New Tests of the Cosmic Distance Duality Relation with DESI 2024 Baryon Acoustic Oscillation Observations

open access: yesThe Astrophysical Journal
In this paper, we test the cosmic distance duality relation (CDDR), as required by the Etherington reciprocity theorem, which connects the angular diameter distance and the luminosity distance via the relation D _L ( z ) =  D _A ( z )(1 +  z ) ^2 .
Qiumin Wang   +7 more
doaj   +1 more source

Observational constraints on late-time Lambda(t) cosmology

open access: yes, 2008
The cosmological constant, i.e., the energy density stored in the true vacuum state of all existing fields in the Universe, is the simplest and the most natural possibility to describe the current cosmic acceleration.
A. S. Al-Rawaf   +6 more
core   +1 more source

Assemblage, archive, and ancestor: Developing more‐than‐human historical geography with salmon

open access: yesGeographical Research, EarlyView.
This paper interrogates recent geographic literature on the more‐than‐human archive and argues that there needs to be more specificity when conceptualising and researching the more‐than‐human. It then answers this call for specificity by theorising three modes of more‐than‐human historical geography that are developed through empirical encounters with ...
Austin Read
wiley   +1 more source

Observational constraints on entropic cosmology

open access: yesPhysics Letters B
In this work, we derive a generalized modified Friedmann equation based on an entropy-area relation that incorporates established modifications, such as volumetric, linear, and logarithmic terms, in addition to novel entropic modifications that might ...
Javier Chagoya   +4 more
doaj   +1 more source

Observational Cosmology And The Cosmic Distance Duality Relation

open access: yes, 2011
We study the validity of cosmic distance duality relation between angular diameter and luminosity distances. To test this duality relation we use the latest Union2 Supernovae Type Ia (SNe Ia) data for estimating the luminosity distance. The estimation of
Jain, Deepak   +2 more
core   +1 more source

Weaponizing Nature, Naturalizing Violence: Anthropologies of Ecofascism

open access: yesAmerican Anthropologist, EarlyView.
ABSTRACT After decades of denial and obstruction, the global Right is increasingly willing to acknowledge that climate change is a threat to lives and lifeways everywhere. Moreover, some seize on the specter of ecological collapse to advance fascistic politics.
Chloe Ahmann   +7 more
wiley   +1 more source

Newest Measurements of Cosmic Curvature with BOSS/eBOSS and DESI DR1 Baryon Acoustic Oscillation Observations

open access: yesThe Astrophysical Journal Letters
Determining the cosmic curvature (Ω _K ) independent of cosmological models plays a key role in revealing the background physics of our Universe. In this Letter, we propose an improved method to measure the cosmic curvature using the observations of ...
Tonghua Liu   +4 more
doaj   +1 more source

CONCEPTS OF COSMOLOGY REGARDING ITS EVOLUTION

open access: yesThe Sky, 2018
Body of beliefs on the basis mythological, religious, and cryptic literature and traditions of conception and eschatology is called Religious or mythological cosmology.Physical cosmology is examined by various astronomers, physicists, and also by ...
Muhammad Zeeshan Ashraf   +2 more
doaj   +1 more source

The Unbecoming Ghost: Spectropolitics in the Making and Unmaking of BHU's Bhoot Vidya Ayurveda Certificate Program

open access: yesAnthropology of Consciousness, EarlyView.
ABSTRACT This essay examines the controversy surrounding the Bhoot Vidya certificate program proposed by the Faculty of Ayurveda at Banaras Hindu University in 2019. Drawing on media coverage, curricular materials, and government policy, I analyze how the debate reveals broader tensions in the politics of contemporary Ayurveda, nationalism, and ...
Thomas Seibel
wiley   +1 more source

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