Results 101 to 110 of about 6,954,829 (204)
Cosmic expansion in homogeneous and inhomogeneous universes : supernovae type Ia as cosmic probes
, 2010 Seikel M. Cosmic expansion in homogeneous and inhomogeneous universes : supernovae type Ia as cosmic probes. Bielefeld (Germany): Bielefeld University; 2010.Since it has been discovered in the late 1990s that the universe is likely to be expanding ...
Seikel, Marina
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Discovery of the most distant supernovae and the quest for {Omega} [PDF]
, 1994 A search for cosmological supernovae has discovered a number of a type Ia supernovae. In particular, one at z = 0.458 is the most distant supernovae yet observed.
Perlmutter, S. +9 more
core +2 more sources
Laser bathymetry on rough riverbed channels: State‐of‐the‐art and future prospects
Earth Surface Processes and Landforms, Volume 51, Issue 6, June 2026.This literature review found that topo‐bathymetric LiDAR has been successfully used to capture the structures of rough riverbeds and detect large boulders. While all of the studies that were reviewed used sensors that were operated from fixed‐wing aircraft, few studies have yet tested UAV‐borne sensors on rough riverbeds, despite the potential offered ...
Theresa M. Himmelsbach +4 more
wiley +1 more source
ChemistryOpen, Volume 15, Issue 6, June 2026.Two new thiophene–pyrazole derivatives, 8a and 8b, were synthesized from thiophene 3 precursor and fully characterized. The structure of 8a was confirmed by single‐crystal X‐ray diffraction, which revealed a nonplanar conformation stabilized by NH···O hydrogen bonding and weak intermolecular contacts.
Abdullatif Bin Muhsinah +3 more
wiley +1 more source
GENERATION OF HIGH-ENERGY PHOTONS AT ULTRA-RELATIVISTIC SHOCK BREAKOUT IN SUPERNOVAE
The Astrophysical Journal, 2013 We present theoretical expectations for non-thermal emission due to the bulk Comptonization at the ultra-relativistic shock breakout. We calculate the transfer of photons emitted from the shocked matter with a Monte Carlo code fully taking into account special relativity.
Ohtani, Yukari +2 more
openaire +2 more sources
La‐Tuned Scintillators With Nanosecond Response and High Flexibility for Blur‐Free X‐Ray Imaging
SmartMat, Volume 7, Issue 3, June 2026.This work presents a zero‐dimensional Ce (III)‐based hybrid halide scintillator designed for real‐time and flexible X‐ray imaging. La3+ alloying synergistically enhances photoluminescence efficiency while preserving nanosecond‐scale decay. The resulting material exhibits a high light yield and low detection limit.
Jingyu Li +6 more
wiley +1 more source
Forecasts on the dark energy anisotropic stress for the esa euclid survey [PDF]
The cosmological constant Λ seems to be a not satisfactory explanation of the late-time accelerated expansion of the Universe, for which a number of experimental evidences exist; therefore, it has become necessary in the last years to consider ...
Fogli, Simone
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Traces of Extra Dimensions in Cosmology [PDF]
, 2010 In this thesis, we discuss the observational consequences of extra dimensions on cosmological phenomena. We begin with an overview of extra dimensions, from the initial ideas of Kaluza and Klein to the more recent concept of braneworld models and in ...
O'Callaghan, Eimear Eileen +1 more
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Martian Proton Albedo as Signature of Near‐Surface Water
Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.Abstract Understanding the Martian soil water budget is crucial not only for in situ resource utilization in future human missions to Mars, but also for reconstructing the geological and climatic history of the planet, as well as to assess the potential of ancient or even present microbial life.
Jan Leo Löwe +13 more
wiley +1 more source
Neutrino oscillations at high densities: cosmological and astrophysical aspects
, 2011 This doctoral thesis treats the effects of neutrino oscillations in the early universe and supernovae. The main probe for the context of the early universe is big bang nucleosynthesis (BBN).
Sarikas, Srdjan
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