Results 1 to 10 of about 1,520 (178)

Interstellar Matter Structure along the Line of Sight to Cyg X-1

open access: yesOpen Astronomy, 2015
High-resolution spectra (R = 60 000) of Cyg X-1 = V1357 Cyg obtained with the NES echelle spectrograph of the Russian 6 meter telescope (3950–6690 Å) were used to study narrow interstellar absorption lines.
E A Karitskaya, V G Klochkova
exaly   +2 more sources

On the Cooling of Interstellar Matter [PDF]

open access: yesReviews of Modern Physics, 1958
We shall not discuss here in detail the problem of the temperature equilibrium of interstellar matter. Some improvement of our knowledge has been effected by Seaton's results concerning the collisional cross sections of the ions C+, Si+, Fe+, which are important for the temperature equilibrium of the HI regions, and by his results concerning the ...
E Schatzman
exaly   +2 more sources

Quantum mechanical modeling of interstellar molecules on cosmic dusts: H2O, NH3, and CO2

open access: yesFrontiers in Chemistry, 2022
Since the first detection of CH molecule in interstellar medium (ISM), more than 270 molecules have been identified in various astronomical sources in ISM.
Fangfang Li   +9 more
doaj   +1 more source

Multi-line Observations, Models, and Data Needed to Understand the Nature of UV-irradiated Interstellar Matter [PDF]

open access: yesEPJ Web of Conferences, 2022
Far-ultraviolet photons from OB-type massive stars regulate the heating, ionization, and chemistry of much of the neutral interstellar gas in star-forming galaxies.
Goicoechea Javier R.   +2 more
doaj   +1 more source

Asymmetric mass-loss from the white dwarf WD 0253+209 : Secret revealed

open access: yesBibechana, 2012
Dust structures around the white dwarf WD 0253+209 is studied in 100 and 60 micron infrared image. These images are received from Infrared Astronomical Satellite Survey (IRAS Survey).
Binil Aryal
doaj   +3 more sources

How to search for mirror stars with Gaia

open access: yesJournal of High Energy Physics, 2022
We show for the first time how to conduct a direct search for dark matter using Gaia observations. Its public astrometric data may contain the signals of mirror stars, exotic compact objects made of atomic dark matter with a tiny kinetic mixing between ...
Aaron Howe   +3 more
doaj   +1 more source

Obstacles from interstellar matters and distortion in warp drive superluminal travel scenario

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
We investigate obstacles of superluminal “warp drive” travels from interactions with interstellar matter and from curvature effects. The effect of collision of interstellar dust particles and photons with the spacecraft will all lead to a pressure ...
Siyu Bian, Yi Wang, Zun Wang, Mian Zhu
doaj   +1 more source

Feedback from young stars, the molecular signature of shocks and outflows [PDF]

open access: yesEPJ Web of Conferences, 2022
Why do we study shocks ? Because they are there. Shocks are ubiquitous in the interstellar medium (ISM), where they constitute a major source of energy injection, together with photons and cosmic rays (CRs).
Gusdorf Antoine
doaj   +1 more source

Nuclear Processes in Dark Interstellar Matter of H(0) Decrease the Hope of Migrating to Exoplanets

open access: yesSpace: Science & Technology, 2021
It is still generally assumed that interstellar travel will be possible after purely technical development and thus that mankind can move to some suitable exoplanet when needed.
Leif Holmlid
doaj   +1 more source

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