59 Result(s)

Article

Can Solid Hydrogen condense on Interstellar Grains?

IT has been suggested^1,2 that the temperatures of some interstellar grains may be low enough for the condensation of solid hydrogen on their surfaces. The questions of grain temperature and vapour pressure of sol...

J. M. GREENBERG, T. DE JONG in Nature (1969)

Article

On the interaction of shocks and simple waves of the same family

J. M. Greenberg in Archive for Rational Mechanics and Analysis (1973)

Chapter

Broadband Structure in the Interstellar Extinction Curve

We have analysed observations of the interstellar extinction in the range 3400 Å–11000 Å. The observations have high photometric accuracy and wavelength resolution, and allow a detailed examination of broadban...

D. S. Hayes, G. E. Mavko, R. R. Radick, K. H. Rex… in Interstellar Dust and Related Topics (1973)

Chapter

Broadband Structure in the Interstellar Extinction Curve

We have analysed observations of the interstellar extinction in the range 3400 Å-11000 Å. The observations have high photometric accuracy and wavelength resolution, and allow a detailed examination of broadban...

D. S. Hayes, G. E. Mavko, R. R. Radick, K. H. Rex… in Interstellar Dust and Related Topics (1973)

Chapter and Conference Paper

Asymptotic behavior of solutions to the quasilinear wave equation

J. M. Greenberg in Partial Differential Equations and Related Topics (1975)

Article

Smooth and time-periodic solutions to the quasilinear wave equation

J. M. Greenberg in Archive for Rational Mechanics and Analysis (1975)

Chapter and Conference Paper

Physics and Astrophysics of Interstellar Dust

Although this exposition covers the topics discussed in the series of lectures presented at the Summer School on Infrared Astronomy, their order has been changed. This is largely a result of the experience gai...

J. M. Greenberg in Infrared Astronomy (1978)

Chapter and Conference Paper

Grain Mantle Photolysis: A Connection between the Grain Size Distribution Function and the Abundance of Complex Interstellar Molecules

The energy stored as free radicals in the process of growth and photoprocessing of interstellar grain mantles by ultraviolet radiation in clouds is treated as the primary cause of both grain mantle destruction...

J. M. Greenberg in Stars and Star Systems (1979)

Article

Interstellar molecule formation in grain mantles: The laboratory analog experiments, results and implications

Laboratory and theoretical studies have been made of the effects of ultraviolet photolysis of interstellar grain mantles which consist of combinations of hydrogen, oxygen, carbon and nitrogen — ‘dirty ice’. It...

W. Hagen, L. J. Allamandola, J. M. Greenberg in Astrophysics and Space Science (1979)

Article

The Riemann problem for the system \(u_1 + \sigma _x = 0{\text{ and }}(\sigma - f(u))_t + (\sigma - uf(u))\)

J. M. greenberg, L. Hsiao in Archive for Rational Mechanics and Analysis (1983)

Chapter and Conference Paper

Introduction

I am honored to be asked to introduce this second ‘Jena’ meeting on interstellar dust at Georgenthal and I thank the organizers for making this possible. For some of us, interstellar dust had not only provided...

J. M. Greenberg in The Role of Dust in Dense Regions of Interstellar Matter (1986)

Chapter and Conference Paper

The Role of Grains in Molecular Chemical Evolution

The observations of dust gas in diffuse and molecular clouds are shown to reflect not only their current state but their past history. The interpretation of infrared spectra of dust in molecular clouds using a...

J. M. Greenberg in The Role of Dust in Dense Regions of Interstellar Matter (1986)

Chapter and Conference Paper

S₂ Formation in Interstellar Dust; A Diagnostic of the Maximum Aggregation Temperature For A Comet

Ultraviolet photolysis oi interstellar grain types of dirty ices containing H₂0, CO, CH₄ and H₂S produces S₂. At low temperature (10 K) this molecule can be trapped in the dirty ice for a time longer than the age...

R. J. A. Grim, J. M. Greenberg, L. J. van IJzendoorn in Light on Dark Matter (1986)

Article

Introduction

J. M. Greenberg in Astrophysics and Space Science (1986)

Article

The role of grains in molecular chemical evolution

The observations of dust gas in diffuse and molecular clouds are shown to reflect not only their current state but their past history. The interpretation of infrared spectra of dust in molecular clouds using a...

J. M. Greenberg in Astrophysics and Space Science (1986)

Chapter

Molecular Origin of the 216 NM Interstellar Hump

Vacuum ultraviolet photochemical experiments have been performed in an argon matrix, at low temperature (− 12 K). It appears that starting from a variety of simple organic molecules photo-products are formed w...

G. P. van der Zwet, M. S. de Groot, F. Baas… in Polycyclic Aromatic Hydrocarbons and Astro… (1987)

Chapter and Conference Paper

Integrable transport processes

J. M. Greenberg in Nonlinear Hyperbolic Problems (1987)