Results 51 to 60 of about 830 (187)
Deep Space Network Radio Science and Ground‐Based Planetary Radar in the Next Decade
Radio Science, Volume 60, Issue 7, July 2025.Abstract The Deep Space Network (DSN) has been a core operational element of NASA's crewed and robotic exploration of the Solar System since the early 1960s. The primary role of the DSN has been to acquire telemetry and navigation data, but over the years, its radiometric and radar capabilities have expanded to form a system for obtaining unique ...
R. S. Park +13 more
wiley +1 more source
Simulating reionization in numerical cosmology [PDF]
New Astronomy, 2001 37 pages, 7 figures, Submitted to ...
Sokasian, A., Abel, T., Hernquist, L. E.
openaire +4 more sources
Constraints on the Thomson optical depth to the Cosmic Microwave Background from the Lyman-α forest
Physical Review ResearchWe present the first constraints on the electron optical depth to reionization, τ_{e}, from the Lyman-α forest alone for physically motivated reionization models that match the reionization's end point, z_{end}, required by the same astrophysical probe ...
Olga Garcia-Gallego +3 more
doaj +1 more source
Astronomy & AstrophysicsWe report the measurement of the R3 = [O III] λ5008/Hβ ratios for 54 galaxies in the GLIMPSE-D survey. Thanks to gravitational lensing, our sample includes galaxies with −20 ≲ MUV
Korber Damien +15 more
doaj +1 more source
Molecular Informatics, Volume 44, Issue 2, February 2025.MAYA is an open chemical multiverse visualizer tool for the automated exploration of structure‐multiple activity relationships (SMARts). Abstract Herein, we introduce MAYA (Multiple Activity Analyzer), a tool designed to automatically construct a chemical multiverse, generating multiple visualizations of chemical spaces of a compound data set described
J. Israel Espinoza‐Castañeda +1 more
wiley +1 more source
The Astrophysical JournalUnderstanding when and how reionization happened is crucial for studying the early structure formation and the properties of the first galaxies in the Universe. At z > 5.5, the observed intergalactic medium (IGM) optical depth shows a significant scatter,
Xiangyu Jin +24 more
doaj +1 more source
Mass distribution of population III star clusters: A-SLOTH predictions for JWST observability
Astronomy & AstrophysicsContext. Detecting population III (pop. III) stars remains a major observational challenge. Their Balmer-series recombination line emission, redshifted into the infrared at z ∼ 5 − 11, has been proposed as a potential tracer.
Lipatova Veronika +3 more
doaj +1 more source
Patchy Kinetic Sunyaev–Zel’dovich Effect with Controlled Reionization History and Morphology
The Astrophysical Journal, 2023 Using the novel semi-numerical code for reionization AMBER, we model the patchy kinetic Sunyaev–Zel’dovich (kSZ) effect by directly specifying the reionization history with the redshift midpoint z _mid , duration Δ _z , and asymmetry A _z .
Nianyi Chen +3 more
doaj +1 more source
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
THE REIONIZATION OF GALACTIC SATELLITE POPULATIONS [PDF]
The Astrophysical Journal, 2014 We use high resolution simulations of the formation of the local group post-processed by a radiative transfer code for UV photons, to investigate the reionization of the satellite populations of an isolated Milky Way-M31 galaxy pair in a variety of scenarios. We use an improved version of ATON which includes a simple recipe for radiative feedback.
P. Ocvirk +8 more
openaire +3 more sources