Results 41 to 50 of about 43,858 (281)
Arecibo Multi-Epoch HI Absorption Measurements Against Pulsars: Tiny-Scale Atomic Structure
, 2010 We present results from multi-epoch neutral hydrogen (HI) absorption observations of six bright pulsars with the Arecibo telescope. Moving through the interstellar medium (ISM) with transverse velocities of 10--150 AU/yr, these pulsars have swept across ...
Green, J. T. +4 more
core +1 more source
Fluorescent Nanosensor for Indole‐3‐Propionic Acid Detection in Gut Health Monitoring
Advanced Healthcare Materials, EarlyView.This work introduces a fluorescent nanosensor system with two optical modalities for detection of indole‐3‐propionic acid (IPA) gut metabolite: (1) blue‐emitting cationic conjugated polyelectrolyte (CP3) and (2) near‐infrared (NIR)‐emitting CP3‐wrapped single‐walled carbon nanotube (SWNT).
Mervin Chun‐Yi Ang +15 more
wiley +1 more source
The Astrophysical JournalWe have observed six “dark” neutral hydrogen (H i ) clouds discovered in the Virgo Cluster by the Arecibo Galaxy Environment Survey (AGES) with the Karl G.
Robert Minchin +4 more
doaj +1 more source
A Multi-Species Model for Hydrogen and Helium Absorbers in Lyman-Alpha Forest Clouds
, 1995 We have performed a multi-species hydrodynamical simulation of the formation and evolution of Lyman alpha clouds in a flat CDM dominated universe with an external flux of ionizing radiation.
Giallongo E. +5 more
core +1 more source
Destruction of Molecular Hydrogen During Cosmological Reionization [PDF]
, 1996 We investigate the ability of primordial gas clouds to retain molecular hydrogen (H_2) during the initial phase of the reionization epoch. We find that before the Stromgren spheres of the individual ionizing sources overlap, the UV background below the ...
Abraham Loeb +7 more
core +2 more sources
Blowing in the Milky Way Wind: Neutral Hydrogen Clouds Tracing the Galactic Nuclear Outflow [PDF]
The Astrophysical Journal, 2018 Abstract We present the results of a new sensitive survey of neutral hydrogen above and below the Galactic Center with the Green Bank Telescope. The observations extend up to Galactic latitude with an effective angular resolution of 9.′5 and an average rms brightness ...
Enrico M. Di Teodoro +6 more
openaire +4 more sources
2D Nanomaterials Toward Function‐Ready Superlubricity in Advanced Microsystems
Advanced Materials, EarlyView.A unified framework links structural and transformation superlubricity with microsystem functions and deployment requirements. Mechanisms, device architectures, integration strategies, AI‐guided discovery, and benchmarking protocols are connected to define function‐ready superlubricity in advanced microsystems.
Yushan Geng, Jun Yang, Yong Yang
wiley +1 more source
The Astrophysical Journal LettersWe present a new analytical model for the attenuation to Epoch of Reionization (EoR) galaxies by proximate neutral hydrogen gas. Many galaxy spectra in the EoR taken by JWST have shown a flux deficit at wavelengths just redward of the Lyman break, and ...
Yoshihisa Asada +14 more
doaj +1 more source
The chemistry of fluorine-bearing molecules in diffuse and dense interstellar gas clouds
, 2005 We present a theoretical investigation of the chemistry of fluorine-bearing molecules in diffuse and dense interstellar gas clouds. The chemistry of interstellar fluorine is qualitatively different from that of any other element, because - unlike the ...
Neufeld, David A. +2 more
core +1 more source
A SEARCH FOR DIFFUSE NEUTRAL HYDROGEN AND H I CLOUDS IN THE NGC 2403 GROUP [PDF]
The Astronomical Journal, 2009 Accepted by ...
Chynoweth, Katie M. +3 more
openaire +2 more sources