Results 161 to 170 of about 440 (199)

Optical vortices 30 years on: OAM manipulation from topological charge to multiple singularities. [PDF]

Light Sci Appl, 2019
Shen Y, Wang X, Xie Z, Min C, Fu X, Liu Q, Gong M, Yuan X.   +7 more
europepmc   +1 more source

Molecular oxygen: A new astrophysical maser?

The Astrophysical Journal, 1995
openaire   +1 more source

Astrophysical Masers. I. Source Size and Saturation

The Astrophysical Journal, 1972
Peter Goldreich, Douglas A. Keeley
openaire   +1 more source

The Confrontation between General Relativity and Experiment. [PDF]

Living Rev Relativ, 2014
Will CM.
europepmc   +1 more source

The Hubble Constant. [PDF]

Living Rev Relativ, 2007
Jackson N.
europepmc   +1 more source

Astrophysical masers with magnetic fields and velocity gradients

The Astrophysical Journal, 1986
S. Deguchi, W. D. Watson, L. R. Western
openaire   +1 more source

History of Atomic Clocks. [PDF]

J Res Natl Bur Stand (1977), 1983
Ramsey NF.
europepmc   +1 more source

Quasars and active galactic nuclei: high resolution radio imaging. [PDF]

Proc Natl Acad Sci U S A, 1995
Cohen MH, Kellermann KI.
europepmc   +1 more source

The Confrontation between General Relativity and Experiment. [PDF]

Living Rev Relativ, 2006
Will CM.
europepmc   +1 more source

Far-infrared observations of a massive cluster forming in the Monoceros R2 filament hub^⋆. [PDF]

Astron Astrophys, 2017
Rayner TSM, Griffin MJ, Schneider N, Motte F, Kӧnyves V, André P, Di Francesco J, Didelon P, Pattle K, Ward-Thompson D, Anderson LD, Benedettini M, Bernard JP, Bontemps S, Elia D, Fuente A, Hennemann M, Hill T, Kirk J, Marsh K, Men'shchikov A, Nguyen Luong Q, Peretto N, Pezzuto S, Rivera-Ingraham A, Roy A, Rygl K, Sánchez-Monge Á, Spinoglio L, Tigé J, Treviño-Morales SP, White GJ.   +31 more
europepmc   +1 more source