Results 61 to 70 of about 727 (169)
The late reionization of filaments [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 16 pages, 9 figures, accepted to ...
Finlator, K. +3 more
openaire +2 more sources
LYRA. III. The Smallest Reionization Survivors
The Astrophysical Journal, 2022 Abstract The dividing line between galaxies that are quenched by reionization (“relics”) and galaxies that survive reionization (i.e., continue forming stars) is commonly discussed in terms of a halo mass threshold. We probe this threshold in a physically more complete and accurate way than has been possible to date, using five extremely
Thales A. Gutcke +5 more
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The Role of Secondary Recoil Leaders in the Formation of Subsequent Return Strokes
Geophysical Research Letters, Volume 52, Issue 2, 28 January 2025.Abstract Recoil leaders develop in lightning flash decayed channels. The propagation of a recoil leader depends on the charges stored at its tip and the conductivity of the decayed channel. When the recoil leader propagates over the entire channel, a subsequent return stroke happens.
Ivan T. Cruz +3 more
wiley +1 more source
UniverseThe adequate choice of stellar initial mass function (IMF) is crucial when studying high-z galaxy formation and the epoch of reionization (EoR) models. We employ the semi-analytical galaxy model L-Galaxies2020 and the dark matter simulation Millennium-II,
Qingbo Ma, Lei Liu, Peiai Liu
doaj +1 more source
, 2003 10 pages, 9 figures, minor revisions, in press, MNRAS 343 (2003) 1101 ...
Ciardi, B., Stoehr, F., White, S. D. M.
openaire +2 more sources
Journal of Geophysical Research: Space Physics, Volume 130, Issue 1, January 2025.Abstract We investigate the emission of energetic neutral atoms (ENAs) from the magnetosphere‐atmosphere interactions at Europa and Callisto that may be observed by an ENA imaging instrument. To do so, we combine the draped electromagnetic fields from the AIKEF hybrid model with a tracing tool for the energetic magnetospheric parent ions.
C. Michael Haynes +3 more
wiley +1 more source
Reionization and decaying dark matter [PDF]
Physical Review D, 1992 Gunn-Peterson tests suggest that the Universe was reionized after the standard recombination epoch. We present a systematic treatment of the ionization process by deriving the Boltzmann equations appropriate to this regime. A compact solution for the photon spectrum is found in terms of the ionization ratio.
, Dodelson, , Jubas
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Radio Frequency Interference Detection Using Swin Transformer Embedding U2‐Net
Advances in Astronomy, Volume 2025, Issue 1, 2025.Radio frequency interference (RFI) is radio wave interference from natural sources or man‐made models. In radio astronomy research, the signals of celestial objects captured by radio telescopes are extremely weak, and the presence of RFI can significantly mask or distort those signals, reducing the accuracy of observational data and seriously affecting
Shengdi Chen, Bo Liang, Sándor Frey
wiley +1 more source
Astronomy & AstrophysicsWe analyse the impact of the decaying magnetic turbulence of primordial magnetic fields (PMFs) and ambipolar diffusion on the ionisation and thermal history of the Dark Ages Universe (30 ≤ z ≤ 300), and its imprint on the spectral profile of the global ...
Novosyadlyj B. +3 more
doaj +1 more source
Dark-ages reionization and galaxy formation simulation – IX. Economics of reionizing galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 Using a series of high-resolution hydrodynamical simulations we show that during the rapid growth of high-redshift (z > 5) galaxies, reserves of molecular gas are consumed over a time-scale of 300 Myr, almost independent of feedback scheme. We find that there exists no such simple relation for the total gas fractions of these galaxies, with little ...
Duffy, Alan R. +6 more
openaire +4 more sources