Results 41 to 50 of about 5,560 (224)

Variable interstellar absorption lines: a brief review

, 2003
I review the recent discoveries of variable interstellar absorption lines, widely taken to imply the existence of very small scale(10–100 AU) structure in the interstellar medium.
Crawford, Ian
core   +1 more source

On the Detection of Low‐Frequency Planetary Radio Emission With an Orbiting Interferometer

Radio Science, Volume 61, Issue 6, June 2026.
Abstract The magnetized planets of the outer Solar System produce kilometric radio emissions at very low frequencies (<1 ${< } 1\,$MHz). They reveal the planetary magnetic dynamics and their interaction with the solar wind. Those radio emissions can also serve as a proxy for interplanetary space weather monitoring.
E. Rouillé, B. Cecconi, B. Segret, J. N. Girard, A. Loh   +4 more
wiley   +1 more source

Investigating interstellar dust along the line of sight of GX 13+1 using different dust-size distributions

Astronomy & Astrophysics
Context. High-resolution X-ray spectroscopy offers a powerful tool to investigate the physical and chemical properties of dust grains, especially through the analysis of absorption edges of elements such as oxygen, magnesium, silicon, and iron, which are
Vaia B., Zeegers S. T., Abril-Cabezas I., Costantini E.   +3 more
doaj   +1 more source

How to Imagine Educational AI: The Filling of a Pail or the Lighting of a Fire?

Educational Theory, Volume 76, Issue 3, Page 316-338, June 2026.
Abstract Recent advances in artificial intelligence (e.g., machine learning, generative AI) have led to increased interest in its application in educational settings. AI companies hope to revolutionize teaching and learning by tailoring material to the individual needs of students, automating parts of teachers' jobs, or analyzing educational data to ...
Michał Wieczorek, Alberto Romele
wiley   +1 more source

Polarization‐Selective Metamaterial Absorber for Long‐ to Very Long‐Wavelength Infrared Broadband

Nanophotonics, Volume 15, Issue 9, 13 May 2026.
Broadband and polarization‐selective metamaterial absorbers for long‐ to very long‐wavelength infrared light with high extinction ratios are designed and demonstrated, which provide a new method for broadband polarization‐selective absorbers. ABSTRACT Metamaterial absorbers have received extensive research interest and sustained attention due to their ...
Zhe Wu, Zhongzhu Liang, Xiaoyan Shi, Fuming Yang, Siyu Guo, Jihui Jiang, Wenwen Sun, Xintong Wei, Bing Sun, David R. Smith, Haiyang Xu   +10 more
wiley   +1 more source

Electronic Spectroscopy of C60+ and Its Analogs C60H2O+, C60H+, C60D+, and C60Mg+

The Astrophysical Journal
The fullerenes C _60 and C _70 have been detected in various interstellar environments, and the cation ${{{\rm{C}}}_{60}}^{+}$ has been identified as a carrier of at least four of the diffuse interstellar bands (DIBs). Based on the presence of fullerenes
Lisa Ganner, Gabriel Schöpfer, Alexander Ebenbichler, Stefan Bergmeister, Milan Ončák, Helgi Rafn Hrodmarsson, Elisabeth Gruber   +6 more
doaj   +1 more source

High-Resolution UV Absorption Observations of the Local Interstellar Cavity

, 2010
International audienceWe present far-ultraviolet (1245-1680 Å), high-resolution ( R ~ 3 km s-1 ) spectroscopic observations of three early-type stars (HD 32630, HD 158427, and HD 175191) located within 75 pc of the Sun recorded with the recently ...
Rosine Lallement, Lallement, Rosine, Barry Y. Welsh, Welsh, Barry Y.   +3 more
core   +1 more source

Modeling the Detectability of Energetic Heliospheric Ions at Pluto During the New Horizons Flyby

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract We investigate the detectability of heliospheric helium ions at energies up to 100 keV by the New Horizons (NH) spacecraft during its flyby through Pluto's induced magnetosphere. The Pluto Energetic Particle Spectrometer Science Investigation energetic ion detector observed a reduction in their flux by an order of magnitude as the spacecraft ...
Randall T. Ruch, Sven Simon, Peter Kollmann, C. Michael Haynes   +3 more
wiley   +1 more source

Interstellar spectral features and telluric absorption lines

, 2012
In good quality spectra of stars the weak interstellar absorption lines may be substantially contaminated by telluric lines. Many telluric lines may also simulate interstellar absorptions.
Kuźmicz, A., Wszołek, B.
core   +1 more source

Mapping Our Path through the Local Interstellar Medium: High-resolution Ultraviolet Absorption Spectroscopy of Sight Lines along the Sun’s Historical Trajectory

The Astrophysical Journal
Using high-resolution UV data obtained from the Space Telescope Imaging Spectrograph on board the Hubble Space Telescope, we focus on eight sight lines along the Sun’s historical trajectory to reconstruct the morphology of our most recent interstellar ...
Hunter Vannier, Seth Redfield, Brian E. Wood, Hans-Reinhard Müller, Jeffrey L. Linsky, Priscilla C. Frisch   +5 more
doaj   +1 more source