Results 11 to 20 of about 282,866 (344)
110 MW Thin-Disk Oscillator [PDF]
EPJ Web of Conferences, 2022 A compact Kerr-lens mode-locked thin-disk oscillator reproducibly delivering 110 MW output peak power, the highest among all oscillators, is reported. This simple and stable femtosecond oscillator delivering a unique combination of high average power (202 W) and peak power, is an ideal driver and an important milestone for the development of extreme ...
Goncharov Semyon +2 more
doaj +4 more sources
Structural Parameters of Thin and Thick Disks in Edge-On Disk Galaxies [PDF]
The Astronomical Journal, 2005 We analyze the global structure of 34 late-type, edge-on, undisturbed, disk galaxies spanning a wide range of mass. We measure structural parameters for the galaxies using two-dimensional least-squares fitting to our $R$-band photometry. The fits require
Binggeli B. +20 more
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The Newtonian potential of thin disks [PDF]
Astronomy & Astrophysics, 2011 Accepted for publication in A& ...
Franck Hersant +3 more
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Yb:CaGdAlO_4 thin-disk laser [PDF]
Optics Letters, 2011 We present the first demonstration of a Yb:CALGO thin-disk laser. In a slightly multimode configuration, we obtained up to 30 W of average power at a slope efficiency of 40% and an optical-to-optical efficiency of 32%. With a single-mode cavity, an average power of 25 W was achieved.
Ricaud, Sandrine +12 more
openaire +4 more sources
Rotating relativistic thin disks [PDF]
Physical Review D, 2000 18 eps figures, to be published ...
Guillermo A. González +1 more
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Physical Review D, 2023 Thin disk accretion is often modeled in highly dynamical settings using the two-dimensional equations of viscous hydrodynamics, with viscosity representing unresolved turbulence. These equations are supposed to arise after vertical integration of the full three-dimensional equations of hydrodynamics, under the assumption of a geometrically thin disk ...
openaire +3 more sources
Are there thin accretion disks?
, 2004 Total and internal energy requirements set constraints on the allowable temperature on the disk. In a gas pressure dominated disk, they lead to a cooling rate that decreases with temperature. These findings are used to show that the flow is mildly supersonic, with the azimuthal Mach number moderately exceeding one in a large extent of the disk. Only in
Cesar Meirelles Filho +2 more
openalex +4 more sources
The AMBRE project: The thick thin disk and thin thick disk of the Milky Way [PDF]
Astronomy & Astrophysics, 2017 We analyze 494 main sequence turnoff and subgiant stars from the AMBRE:HARPS survey. These stars have accurate astrometric information fromGaiaDR1, providing reliable age estimates with relative uncertainties of ±1 or 2 Gyr and allowing precise orbital determinations.
Hayden, M. R. +4 more
openaire +3 more sources
The Panchromatic Hubble Andromeda Treasury. XX. The Disk of M31 is Thick
The Astronomical Journal, 2023 We present a new approach to measuring the thickness of a partially face-on stellar disk, using dust geometry. In a moderately-inclined disk galaxy, the fraction of reddened stars is expected to be 50% everywhere, assuming that dust lies in a thin ...
Julianne J. Dalcanton +8 more
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Chemical constraints on the formation of the Galactic thick disk
EPJ Web of Conferences, 2012 We highlight some results from our detailed abundance analysis study of 703 kinematically selected F and G dwarf stars in the solar neighbourhood. The analysis is based on spectra of high-resolution (R = 45000 to 110 000) and high signal-to-noise (S/N ...
Feltzing S., Bensby T.
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