Results 51 to 60 of about 5,095,486 (206)

Jovian Auroral Proton Precipitation

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract The total power of the Jovian aurora is about 1013–1014 W with ultraviolet emission observed in the Lyman and Werner bands of molecular hydrogen. X‐ray, radio, and infrared emissions have also been observed. The Jovian Auroral Distributions Experiment and the Jovian Energetic Particle Detector Instrument onboard the Juno spacecraft, orbiting ...
S. J. Houston, T. E. Cravens, O. Q. Hamil, J. H. Waite, D. R. Schultz   +4 more
wiley   +1 more source

Vibrationally Resolved Absorption and Fluorescence Cross Sections of Adamantane in the Far-ultraviolet Spectral Range on an Absolute Scale

The Astrophysical Journal Supplement Series, 2023
High-resolution absorption, dispersed fluorescence emission, and photoionization cross sections are presented for gas-phase adamantane excited by synchrotron radiation in the exciting-photon energy range of 6–30 eV. Relative and absolute absorption cross
Lutz Marder, Alexander Breier, Nelson de Oliveira, Philipp Reiss, Philipp Schmidt, Christian Ozga, Catmarna Küstner-Wetekam, Thomas Giesen, Laurent Nahon, Andreas Hans, André Knie, Arno Ehresmann   +11 more
doaj   +1 more source

Evaluating maturity of organic matter in hydrated C1 and CM‐like clasts and a dehydrated clast within a polymict eucrite and a howardite

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 1965-1993, August 2026.
Abstract Volatile‐rich xenolithic clasts in different types of brecciated meteorites represent unique pristine solar system material. This study investigates the maturity and thermal history of organic matter using Raman spectroscopy and aqueous alteration effects using infrared spectroscopy in the matrix of 15 volatile‐rich clasts (C1 and CM‐like ...
Swarna Prava Das, Alessandro Maturilli, Aurélie Van den Neucker, Markus Patzek, Dipak Kumar Panda, Gopal K. Pradhan, Guneshwar Thangjam, Surya Snata Rout   +7 more
wiley   +1 more source

The H2 Glow of a Quiescent Molecular Cloud Observed with JWST

The Astrophysical Journal Letters
We report JWST MIRI/MRS observations of the H _2 S (1) 17.04 μ m transition in two regions in the boundary of the Taurus molecular cloud. The two regions, denoted “Edge” (near the relatively sharp boundary of the ^13 CO J  = 1 → 0 emission) and “Peak ...
Paul F. Goldsmith, Shengzhe Wang, Xin Wang, Raphael Skalidis, Gary A. Fuller, Di Li, Chao-Wei Tsai, Lile Wang, Donghui Quan   +8 more
doaj   +1 more source

COBE Observations of Interstellar Line Emission

, 1996
7 pages of LaTeX with 5 included figures.
openaire   +2 more sources

Raman analysis of organic refractory materials after energetic processing: Evidence for amorphous carbon on TNOs and comets

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 1994-2015, August 2026.
Abstract Amorphous carbon (αC) is found in various extraterrestrial particles, including those thought to originate from the outer Solar System. αC can form through two main processes involving C‐rich materials: exposure to energetic charged particles and thermal processing.
M. Germanà, A. Vyjidak, G. A. Baratta, B. M. Giuliano, R. G. Urso, C. Scirè, D. Fulvio, T. Grassi, P. Jusko, P. Caselli, M. E. Palumbo   +10 more
wiley   +1 more source

Spatially Resolved Comparison of SFRs from UV and Hα in GASP Gas-stripped Galaxies

The Astrophysical Journal
Star formation rates (SFRs) in galaxies offer a view of various physical processes across them, and are measured using various tracers, such as H α and ultraviolet (UV).
Neven Tomičić, Ariel Werle, Benedetta Vulcani, Alessandro Ignesti, Alessia Moretti, Anna Wolter, Koshy George, Bianca M. Poggianti, Marco Gullieuszik   +8 more
doaj   +1 more source

Mid-infrared rotational line emission from interstellar molecular hydrogen

The Astrophysical Journal, 1992
The line emission from the v = 0-0 S(0), S(2), and S(3), and the v = 1-0 and v = 2-1 S(1) transitions of molecular hydrogen in clouds exposed to high FUV fluxes and in shocks is modeled. Particular attention is given to the lowest pure rotational H2 transitions at 20 and 17 microns, respectively.
Michael G. Burton, D. J. Hollenbach, A. G. G. Tielens   +2 more
openaire   +1 more source

Photon yields of energetic particles in the interstellar medium: An easy way to calculate gamma-ray line emission [PDF]

Astronomy & Astrophysics, 2002
A gamma-ray line production calculation in astrophysics depends on i) the composition and energy source spectrum of the energetic particles, ii) the propagation model, and iii) the nuclear cross sections. The main difficulty for model predictions and data interpretation comes from the fact that the spectrum of the particles which actually interact in ...
Parizot, E., Lehoucq, R.
openaire   +3 more sources

Low-frequency Absorption and Radio Recombination Line Features of the Galactic Center Lobe

The Astrophysical Journal
The Galactic center lobe (GCL) is a ∼1° object located north of the Galactic center. In the mid-infrared, the GCL appears as two 8.0 μ m filaments that roughly define an ellipse.
Natasha Hurley-Walker, L. D. Anderson, M. Luisi, N. M. McClure-Griffiths, Robert A. Benjamin, Michael A. Kuhn, Dylan J. Linville, B. Liu, Catherine Zucker   +8 more
doaj   +1 more source