Results 11 to 20 of about 727,398 (339)
Galaxies into the Dark Ages [PDF]
, 2017 We consider the capabilities of current and future large facilities operating at 2\,mm to 3\,mm wavelength to detect and image the [CII] 158\,$\mu$m line from galaxies into the cosmic "dark ages" ($z \sim 10$ to 20).
C. L. Carilli +3 more
openalex +5 more sources
21 cm angular-power spectrum from the dark ages [PDF]
, 2007 At redshifts z >~ 30 neutral hydrogen gas absorbs CMB radiation at the 21cm spin-flip frequency. In principle this is observable and a high-precision probe of cosmology.
Antony Lewis, A. Challinor
openalex +4 more sources
The Planetary Science Journal, 2023 The stratigraphy of the largest natural satellite of our solar system, Ganymede, is investigated using available global mosaic (basemap) and high-resolution images. We are focusing on the reconstruction of the formation and tectonic evolution of selected
Namitha Rose Baby +3 more
doaj +1 more source
Stellar Archeology: What White Dwarf Stars Tell Us About the History of the Galaxy [PDF]
Journal of Astronomy and Space Sciences, 2012 White dwarf stars have played important roles in rather diverse areas of astrophysics. This paper outlines how these stellar remnants, especially those in widely separated “fragile” binaries, have provided unique leverage on difficult astrophysical ...
Terry D. Oswalt
doaj +1 more source
Les sites de hauteur en Crète pendant les siècles obscurs
Projets de Paysage, 2010 At the end of the Bronze Age in Crete, a particular phenomenon makes its appearance. In effect, with the disappearing of centralized power and big palaces, the population scatters and leaves sites in lowland or along the coast to the advantage of site in
Nathalie Monio
doaj +1 more source
Frontiers in Psychology, 2022 During the COVID-19 pandemic, the use of online learning has become a necessary choice for students, and would increase the probability of cyber aggression (CA).
Zhen Zhang +3 more
doaj +1 more source
Frontiers in Astronomy and Space Sciences, 2017 The reionization of helium at z ~ 3 is the final phase transition of the intergalactic medium and supposed to be driven purely by quasars. The He ii transverse proximity effect—enhanced He ii transmission in a background sightline caused by the ionizing ...
Tobias M. Schmidt +8 more
doaj +1 more source
Irish and Welsh Law in the European Contexts
Clio@Themis, 2021 This paper traces the relationship of the Roman Empire with Ireland and Wales from roughly the fifth to the seventh centuries and probes the role that Roman and Canon law played there following the events of 410, based on evidence from authors, such as ...
Thomas Charles-Edward, Jaqueline Bemmer
doaj +1 more source
Possible combinations of early and late time cosmologies through BAO scales
European Physical Journal C: Particles and Fields, 2023 The theoretical scenarios of early universe and late time accelerated expansion constitute an open problem in cosmology. Relative Baryon Acoustic Oscillation (BAO) scales measured by 6dFGS, $$\mathrm SDSS+2dFGRS$$ S D S S + 2 d F G R S , BOSS DR11 Ly ...
Sanjeev Kalita, Chayanika Rabha
doaj +1 more source
Dark energy in the dark ages [PDF]
Astroparticle Physics, 2006 Non-negligible dark energy density at high redshifts would indicate dark energy physics distinct from a cosmological constant or ``reasonable'' canonical scalar fields. Such dark energy can be constrained tightly through investigation of the growth of structure, with limits of \la2% of total energy density at z\gg1 for many models.
openaire +4 more sources