Results 41 to 50 of about 3,102,022 (309)
The VLA-COSMOS 3 GHz Large Project: Cosmic evolution of radio AGN and implications for radio- mode feedback since z 5 [PDF]
, 2017 Based on a sample of over 1800 radio AGN at redshifts out to z 5, which have typical stellar masses within 3 × (1010 - 1011)M⊙, and 3 GHz radio data in the COSMOS field, we derived the 1.4 GHz radio luminosity functions for radio AGN (L1.4 GHz 1022 ...
V. Smolčić +10 more
semanticscholar +1 more source
Evolution of the Early Solar System in Terms of Big History and Universal Evolution
Journal of Big History, 2018 The present contribution is devoted to some aspects of history and evolution of the early Solar system. The origin of the Sun, Earth, other planets and its satellites has long been a matter of great concern for people.
Leonid Grinin
doaj +1 more source
Considering light-matter interactions in Friedmann equations based on the conformal FLRW metric
Journal of Advanced Research, 2023 Introduction: Recent observations indicate that the Universe is not transparent but partially opaque due to absorption of light by ambient cosmic dust. This implies that the current cosmological model valid for the transparent universe must be modified ...
Václav Vavryčuk
doaj +1 more source
Cosmic dust evolution: The challenges for NIKA2 [PDF]
EPJ Web of Conferences, 2022 I summarize a recent study aimed at constraining dust evolution timescales in nearby galaxies. We were able to quantify the effciency of dust condensation in SN II ejecta, grain growth in the ISM and dust destruction by SN II blast waves.
Galliano Frédéric
doaj +1 more source
Evolution of the cosmic microwave background [PDF]
Physical Review D, 2007 We discuss the time dependence and future of the Cosmic Microwave Background (CMB) in the context of the standard cosmological model, in which we are now entering a state of endless accelerated expansion. The mean temperature will simply decrease until it reaches the effective temperature of the de Sitter vacuum, while the dipole will oscillate as the ...
Zibin, J. P., Moss, A., Scott, D.
openaire +2 more sources
Journal of Big History, 2019 The idea that our Universe emerged as a result of the extraordinary power of the Big Bang from singularity (i.e., a state of an infinitely small quantity and infinitely high concentration of matter) is still very popular today.
Leonid Grinin
doaj +1 more source
Field Independent Cosmic Evolution [PDF]
Journal of Astrophysics, 2013 It has been shown earlier that Noether symmetry does not admit a form of corresponding to an action in which is coupled to scalar-tensor theory of gravity or even for pure theory of gravity taking anisotropic model into account. Here, we prove that theory of gravity does not admit Noether symmetry even if it is coupled to tachyonic field and ...
Nayem Sk, Abhik Kumar Sanyal
openaire +2 more sources
The cosmic evolution of dust-corrected metallicity in the neutral gas [PDF]
, 2017 Interpreting abundances of Damped Ly-$\alpha$ Absorbers (DLAs) from absorption-line spectroscopy has typically been a challenge because of the presence of dust.
A. D. Cia +3 more
semanticscholar +1 more source
Cosmic Ballet III: Halo spin evolution in the cosmic web [PDF]
, 2020 We explore the evolution of halo spins in the cosmic web using a very large sample of dark matter haloes in the $\Lambda$CDM Planck-Millennium N-body simulation.
Punyakoti Ganeshaiah Veena +4 more
semanticscholar +1 more source
Energy Flows in Low-Entropy Complex Systems
Entropy, 2015 Nature’s many complex systems—physical, biological, and cultural—are islands of low-entropy order within increasingly disordered seas of surrounding, high-entropy chaos.
Eric J. Chaisson
doaj +1 more source