Results 21 to 30 of about 56,709 (250)

Supersonic turbulence and structure of interstellar molecular clouds [PDF]

, 2002
The interstellar medium (ISM) provides a unique laboratory for highly supersonic, driven hydrodynamics turbulence. We present a theory of such turbulence, confirm it by numerical simulations, and use the results to explain observational properties of ...
B. Dubrulle, B. G. Elmegreen, B. G. Elmegreen, D. Chappell, D. H. Porter, D. Porter, E. A. Novikov, E. C. Ostriker, E. Falgarone, E. Falgarone, H. Politano, J. Cho, M. A. de Avillez, M. J. Korpi, P. Padoan, Paolo Padoan, R. B. Larson, R. B. Larson, R. Benzi, R. Benzi, R. Camussi, R. Grauer, S. Boldyrev, Stanislav Boldyrev, U. Frisch, W.-C. Müller, Z.-S. She, Z.-S. She, Åke Nordlund   +28 more
core   +2 more sources

How catching the interstellar wind in the inner solar system led the way on a road to interdisciplinary research between heliophysics and astrophysics

Frontiers in Astronomy and Space Sciences, 2023
Combined in situ observations of the interstellar wind through the solar system and of its pickup ions (PUIs), implanted after ionization in the solar wind, explain, in comparison with interstellar absorption lines of nearby stars, that the Sun is in an ...
Eberhard Möbius
doaj   +1 more source

The Turbulent Interstellar Medium [PDF]

, 2006
An overview is presented of the main properties of the interstellar medium. Evidence is summarized that the interstellar medium is highly turbulent, driven on different length scales by various energetic processes.
Andreas Burkert, Balbus, Ballesteros-Paredes, Bergin, Blitz, Blondin, Bonnell, Burkert, Burkert, Burkert, Cappellaro, Cowie, de Avillez, de Avillez, Dib, Dib, Dickey, Dickey, Dziourkevitch, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Falgarone, Field, Field, Forster Schreiber, Gazol, Hartmann, Hartmann, Hartmann, Hartmann, Heiles, Heitsch, Heitsch, Hennebelle, Hennebelle, Jenkins, Kanekar, Kerp, Kessel-Deynet, Kim, Kim, Kim, Klein, Klessen, Kolmogorov, Koyama, Kritsuk, Kritsuk, Larson, Mac Low, Mac Low, Mac Low, McKee, Palla, Piontek, Puche, Rhode, Scalo, Scalo, Sellwood, Slyz, Stone, Tran, Vishniac, von Weizsäcker, Vázquez-Semadeni, Wada, Walder, Walder, Williams   +73 more
core   +3 more sources

Large Interstellar Polarisation Survey, II : UV/optical study of cloud-to-cloud variations of dust in the diffuse ISM [PDF]

, 2018
It is well known that the dust properties of the diffuse interstellar medium exhibit variations towards different sight-lines on a large scale. We have investigated the variability of the dust characteristics on a small scale, and from cloud-to-cloud. We
Bagnulo, S, Cami, J, Cox, NLJ, Peest, Christian, Siebenmorgen, R, Voshchinnikov, NV   +5 more
core   +2 more sources

Measuring the fractal structure of interstellar clouds [PDF]

Symposium - International Astronomical Union, 1991
To study the structure of interstellar clouds we used the so-called perimeter-area relation to estimate fractal dimensions. We studied the reliability of the method by applying it to artificial fractals and discuss some of the problems and pitfalls. Results for two different cloud types (high-velocity clouds (HVCs) and infrared cirrus) are summarized ...
Bp Wakker, Martinus Vogelaar, Uj Schwarz
openaire   +3 more sources

Clouds in the interstellar medium [PDF]

Nature, 1980
Giant Molecular Clouds in the Galaxy. Edited by P. M. Solomon and M. G. Edmunds. Pp. 300. (Pergamon: 1980.) £18, $41.
openaire   +2 more sources

Interstellar processes: Ortho/para conversion, radiative association, and dissociative recombination

EPJ Web of Conferences, 2015
The study of the ortho-to-para ratio of assorted gas-phase interstellar molecules such as H2, H2O, NH3, and H2O+ has gained interest in recent years, based partially on new spectral observations of light hydrides by the Herschel Space Observatory ...
Herbst Eric
doaj   +1 more source

High-resolution Observations of H i in the IC 63 Reflection Nebula

The Astronomical Journal, 2023
Photodissociation regions (PDRs), where the (far-)ultraviolet light from hot young stars interact with the gas in surrounding molecular clouds, provide laboratories for understanding the nature and role of feedback by star formation on the interstellar ...
Lars Bonne, B-G Andersson, Robert Minchin, Archana Soam, Joshua Yaldaei, Kristin Kulas, Janik Karoly, Lewis B. G. Knee, Siddharth Kumar, Nirupam Roy   +9 more
doaj   +1 more source

The chemistry of fluorine-bearing molecules in diffuse and dense interstellar gas clouds

, 2005
We present a theoretical investigation of the chemistry of fluorine-bearing molecules in diffuse and dense interstellar gas clouds. The chemistry of interstellar fluorine is qualitatively different from that of any other element, because - unlike the ...
Neufeld, David A., Schilke, Peter, Wolfire, Mark G.   +2 more
core   +1 more source

The Nitrogen Chemistry in Interstellar Clouds [PDF]

Symposium - International Astronomical Union, 1987
Our time dependent model of chemistry of dense interstellar clouds has been extended to study the formation of nitrogen bearing molecules. Here we present results for the calculations, under a variety of density, temperature, and elemental conditions, of the abundances of the following observationally important species: CN, HCN, HNC, NH3, NO, and N2H.
Thomas E. Graedel, William D. Langer
openaire   +2 more sources