Results 81 to 90 of about 21,926 (193)
Multi-Wavelength Observations and Modeling of Loop I
Galaxies, 2018 The article aims to overview the origin and current dynamical state of a giant structure on the northern galactic sky—the radio Loop I extending from ≈ − 45 ∘ to ≈ + 45 ∘ in longitudes and up to ≈ 80 ...
Yuri Shchekinov
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A theory of the diffuse interstellar bands [PDF]
Monthly Notices of the Royal Astronomical Society, 1993 A theory is presented in which the carriers of the diffuse interstellar bands are members of an unspecified class of molecular hydrides denoted XH m , (m = 0, 1,..., m max ). The bands are carried by several different species which differ in m, the number of hydrogen atoms they bear.
openaire +1 more source
Journal of Geophysical Research: Space Physics, Volume 131, Issue 2, February 2026.Abstract The Laschamps geomagnetic excursion (≈41,000 years BP) was a period of significant weakening and incomplete reversal of the Earth's magnetic field. The weakening substantially reduced geomagnetic shielding against cosmic rays (CRs), which contribute to phenomena at Earth, such as cosmogenic isotope production, and atmospheric ionisation and ...
N. Larsen +4 more
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A Theoretical Study of Carbon Nanotube Formation: Carriers of the Diffuse Interstellar Bands?
The Astrophysical JournalDensity functional theory (DFT) calculations have been conducted to probe the formation of carbon nanotubes (CNTs) from graphitic sheets in the presence of a simulated circumstellar shock wave.
A. Thakur +6 more
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Sampling the volcanic plumes at Io: Impact speeds and shock conditions
Meteoritics &Planetary Science, Volume 61, Issue 2, Page 241-271, February 2026.Abstract The desire to sample material from the interior of Io, by flying through its volcanic plumes, requires consideration of the flyby speed and the types of sample collection techniques that can be utilized. Low speed collection (1–2.5 km s−1) would require an orbit around Io itself, which is unlikely due to the accumulated radiation dose that ...
M. J. Burchell +2 more
wiley +1 more source
Heat Transfer, Volume 55, Issue 1, Page 764-774, January 2026.ABSTRACT This review explores the impact of gravitational instability on convective heat transfer, integrating existing research results and theoretical models. Gravitational instability is vital in promoting or hindering convective actions in different systems, such as atmospheric events, ocean currents, and industrial processes.
Hossam A. Nabwey +3 more
wiley +1 more source
Nachtsicht ins All mit dem bloßen Auge: Sag mir, wie weit die Sterne steh'n
Physik in unserer Zeit, Volume 57, Issue 1, Page 32-40, January 2026.Beim Blick in den Nachthimmel sehen wir ohne optische Hilfsmittel und abhängig von der lokalen Lichtverschmutzung viele Hundert bis maximal einige Tausend Sterne und auch einige Galaxien. Aber wie weit sind diese von uns entfernt? Und bis zu welchen maximalen Entfernungen können wir Objekte im Weltall mit dem bloßen Auge wahrnehmen?
Michael Vollmer
wiley +1 more source
Interstellar Migration, the Population ‘Problem’ and the Climate Emergency
Critical Quarterly, Volume 68, Issue 1, Page 103-119, April 2026.
Anna Hartnell
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On the carriers of the diffuse interstellar bands [PDF]
Monthly Notices of the Royal Astronomical Society, 1993 A theory in which the diffuse interstellar bands are carried by the fulleranes C 60 H m (m = 1,2,..., 60) and their ions is investigated further. The molecules of this series have a variety of π-electron systems which are here assigned to two categories by size: global systems, which involve most of the carbon atoms in the molecule, and local systems,
openaire +1 more source
, 2012 Buckminsterfullerene (C60) was recently detected through its infrared emission bands in the interstellar medium (ISM), including in the proximity of massive stars, where physical conditions could favor the formation of the cationic form, C60+.
Bauschlicher +27 more
core +3 more sources