Results 81 to 90 of about 22,853 (217)
, 2003 10 pages, 9 figures, minor revisions, in press, MNRAS 343 (2003) 1101 ...
Ciardi, B., Stoehr, F., White, S. D. M.
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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
Recent Advances in Cosmological Hydrogen Reionization
, 2012 I discuss recent advances in the study of hydrogen reionization, focusing on progress that was achieved during the years 2010-2011. First, I discuss recent measurements of the progress of reionization.
Finlator, Kristian
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UV Radiative Feedback During the Advanced Stages of Reionization [PDF]
, 2008 The ionizing ultraviolet background (UVB) during reionization can suppress the gas content of low-mass galaxies, even those capable of efficient atomic cooling, and thus lead to an extended reionization epoch.
Andrei Mesinger +62 more
core +2 more sources
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
, 2013 The 21cm background from the epoch of reionization is a promising cosmological probe: line-of-sight velocity fluctuations distort redshift, so brightness fluctuations in Fourier space depend upon angle, which linear theory shows can separate cosmological
Ahn, Kyungjin +6 more
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The Thermal Memory of Reionization History [PDF]
, 2003 The recent measurement by WMAP of a large electron scattering optical depth tau_e = 0.17 +- 0.04 is consistent with a simple model of reionization in which the intergalactic medium (IGM) is ionized at redshift z ~ 15, and remains highly ionized ...
Berezhiani Z. G. +7 more
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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
Architecture Design and Ground Performance of Netherlands‐China Low‐Frequency Explorer
Radio Science, Volume 59, Issue 8, August 2024.Abstract The Netherlands‐China Low‐Frequency Explorer (NCLE) (Boonstra et al., 2017, https://www.ursi.org/proceedings/procGA17/papers/Paper_J19‐2(1603).pdf; Chen et al., 2020, https://ui.adsabs.harvard.edu/abs/2020AAS…23610203C/abstract) is a radio instrument for astrophysical studies in the low‐frequency range (80 kHz–80 MHz).
Sukanth Karapakula +38 more
wiley +1 more source