Results 71 to 80 of about 21,634 (214)

Eröffnung des „Hauses der Astronomie“ auf dem Königsstuhl

, 2012
Mit dem „Haus der Astronomie“ (HdA) auf dem Königsstuhl ist ein neues Zentrum für astronomische Bildungs- und Öffentlichkeitsarbeit in Heidelberg eröffnet.
Pössel, Markus, Tschira, Klaus
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Geodätische Astronomie – Grundlage und Konzepte, Albert Schödlbauer [PDF]

, 2000
Dan je prikaz knjige Geodätische Astronomie – Grundlage und Konzepte, Albert ...
Špoljarić, Drago, Solarić, Nikola
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Studying the absorption signatures of H I Lyα in the warm-hot circumgalactic medium with TNG50

Astronomy & Astrophysics
In this study, we investigate the spectral signatures of neutral hydrogen Lyman-α absorption arising from the warm-hot gas component of the circumgalactic medium (CGM) around z = 0 Milky Way (MW)-like galaxies using the high-resolution TNG50 cosmological
Aparicio Marcos P., Richter P., Sparre M., Rünger F., Nelson D.   +4 more
doaj   +1 more source

A method to derive self-consistent NLTE astrophysical parameters for four million high-resolution 4MOST stellar spectra in half a day with invertible neural networks

Astronomy & Astrophysics
Context. Modern spectroscopic surveys have the capacity to obtain the spectra of millions of stars. However, classical spectroscopic methods can often be computationally expensive, rendering them impractical for the analysis of large datasets. Aims.
Ksoll Victor F., Storm Nicholas, Bergemann Maria, Lee Katherine, Klessen Ralf S., Albarracín R., Guiglion Guillaume, Tautvaišienė Gražina   +7 more
doaj   +1 more source

Spectre diagnostiques de reflexion des mineraux dans le domaine infrarouge lointain

Revista Mexicana de Ciencias Geológicas, 2019
Ce travail présente la première étude minéralogique en spectrométrie infrarouge de réflexion dans le domaine lointain. Dans ce domaine, les spectres de réflexion sont surtout typiques pour les composes à force de liaison interatomique relativement ...
Mikhail Ostroumov, Bernard Lasnier, Emmanuel Fritsch, Serge Lefrant   +3 more
doaj  

The Problems of Astronomy [PDF]

Science, 1897
n ...
openaire   +3 more sources

Probleme der Kernwaffen 1985/86 SDI, nuklearer Winter, defensive Verteidigung

, 1986
SIGLEAvailable from Bonn Univ. (DE).
Bonn Univ. (Germany). Fachgruppe Physik/Astronomie
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Spectral and timing variability of the transient ultraluminous X-ray source NGC 4631 X–4

Astronomy & Astrophysics
Context. Ultraluminous X-ray sources (ULXs) are accreting compact objects exhibiting luminosities above the Eddington limit of stellar-mass black holes and are key laboratories for studying super-Eddington accretion physics. Aims.
Allak Sinan, Yu Wei, Ducci Lorenzo, Santangelo Andrea, Akyuz Aysun, Soydugan Faruk, Suleimanov Valery   +6 more
doaj   +1 more source

REGAT: A permanent GPS network in Algeria, configuration and first results

Heliyon, 2019
The REGAT (“REseau Géodésique de l'ATlas”) geodetic network is composed of 53 continuously–recording GPS stations distributed in the Algerian Atlas. It spans the whole width of the Algerian coast and reaches 300 km inland, with inter-sites distance of ...
Abdel Karim Yelles-Chaouche, Kamel Lammali, Amar Bellik, Amina Bougrine, Abdel Hakim Mahsas, Wahab Bacha, Toufik Terki, Othmane Meliani, Fares Ouzzani, Yacine Lakehal, Ahcene Ait Amir, Kamel Khellaf, Sid Ahmed Khentar, Abdelkader Chouiref, Abdelhamid Bendekan, Eric Calais   +15 more
doaj   +1 more source

A candidate cyclotron line at 1.89 keV in the ultraluminous X-ray source NGC 4861 X–2

Astronomy & Astrophysics
In this Letter, we report the detection of an absorption-like feature at ∼1.89 keV in Chandra/ACIS spectra of the ultraluminous X-ray source NGC 4861 X–2, based on the deepest observation (ObsID 20992; ∼59 ks).
Allak Sinan, Ducci Lorenzo, Suleimanov Valery F., Santangelo Andrea, Akyuz Aysun, Piraino Santina, Soydugan Faruk, Deo Chandra Amar, Yu Wei   +8 more
doaj   +1 more source