Results 41 to 50 of about 92,607 (277)
Astronomische Nachrichten, EarlyView.ABSTRACT The goal of this study is to confirm the feasibility of the use of digitized low dispersive MtWilson Michigan Southern Sky Hα$$ \alpha $$ survey astronomical photographic plates for modern astrophysical research. The detection of highly redshifted objects, such as early galaxies and quasars, is fundamental to understanding the universe's ...
Tauseef Ahmad Zafar +3 more
wiley +1 more source
CRAFTS for H i Cosmology. I. Data Processing Pipeline and Validation Tests
The Astrophysical Journal Supplement SeriesWe present the calibration procedures and validation of source measurement with the data of the Commensal Radio Astronomy FAST Survey for H i intensity mapping by the Five-hundred-meter Aperture Spherical Radio Telescope.
Wenxiu Yang +22 more
doaj +1 more source
Environmental Policy and Governance, EarlyView.ABSTRACT Deforestation and its social impacts are an enduring challenge in agrarian frontiers, especially in the tropics. Fueled by global demand for commodities, this process is mediated by ideas, concepts, meanings, and policies that uphold socioenvironmental degradation. A key and understudied—arena in which this mediation occurs is the sub‐national
Gabriela Russo Lopes, Fabio de Castro
wiley +1 more source
The Astrophysical JournalWe present the latest results from the Chicago-Carnegie Hubble Program to measure the Hubble constant, using data from the James Webb Space Telescope (JWST). The overall program aims to calibrate three independent methods: (1) tip of the red giant branch
Wendy L. Freedman +5 more
doaj +1 more source
Modified Friedmann cosmologies—Theory and observations
Annals of Physics, 2005 We investigate a class of Cardassian scenarios of the universe evolution in notions of the qualitative theory of dynamical systems. This theory allows us to analyze all solutions for all possible initial conditions on the phase plane. In the Cardassian models we find that big-rip singularities are present as a typical behavior in the future if $n<0$.
Szydłowski, Marek, Czaja, Wojciech
openaire +4 more sources
Observational constraints on undulant cosmologies [PDF]
Journal of Cosmology and Astroparticle Physics, 2006 19 pages, 12 figures in 19 files, uses iopart.cls, iopart10.clo; added ...
Barenboim, Gabriela +2 more
openaire +3 more sources
Feminist Anthropology, EarlyView.Abstract This article explores how Afro‐Brazilian communities in Pernambuco respond to state‐led industrial development through culturally rooted practices of resistance and repair. Drawing on archival and ethnographic research in the coastal municipalities of Cabo de Santo Agostinho and Ipojuca, this study traces the effects of Brazil's large‐scale ...
Shelly Annette Biesel
wiley +1 more source
The Hubble Constant from Blue Type Ia Supernovae
The Astrophysical JournalThere is a persistent tension of about 5 σ –6 σ between the value of the Hubble constant, as derived from the local distance ladder versus the cosmic microwave background, signaling either unaccounted for systematics in the measurements or “new physics,”
Christa Gall +3 more
doaj +1 more source
Statefinder diagnostic for cosmology with the abnormally weighting energy hypothesis
, 2007 In this paper, we apply the statefinder diagnostic to the cosmology with the Abnormally Weighting Energy hypothesis (AWE cosmology), in which dark energy in the observational (ordinary matter) frame results from the violation of weak equivalence ...
A. Füzfa +22 more
core +1 more source
Neutrinos in dense quark matter and cooling of compact stars [PDF]
, 2009 We discuss that observational constraints on neutrino cooling processes may restrict the spectrum of quark matter phases admissible for compact star interiors.Comment: 3 pages, contribution to International School of Nuclear Physics on "Neutrinos in ...
Berdermann, J., Blaschke, D.
core +2 more sources