Results 31 to 40 of about 120,169 (292)

An Optimal Integral Controller for Adaptive Optics Systems

open access: yesSensors, 2023
Integral controllers are commonly employed in astronomical adaptive optics. This work presents a novel tuning procedure for integral controllers in adaptive optics systems which relies on information about the measured disturbances. This tuning procedure
Pedro Escárate   +3 more
doaj   +1 more source

A real-time simulation facility for astronomical adaptive optics [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2014
Accepted for publication in ...
openaire   +3 more sources

Spectral Templates Optimal for Selecting Galaxies at z > 8 with the JWST

open access: yesThe Astrophysical Journal, 2023
The selection of high-redshift galaxies often involves spectral energy distribution (SED) fitting to photometric data, an expectation for contamination levels, and measurement of sample completeness—all vetted through comparison to spectroscopic redshift
Rebecca L. Larson   +11 more
doaj   +1 more source

Galaxy Formation Theory [PDF]

open access: yes, 2010
We review the current theory of how galaxies form within the cosmological framework provided by the cold dark matter paradigm for structure formation. Beginning with the pre-galactic evolution of baryonic material we describe the analytical and numerical
Abadi   +563 more
core   +1 more source

ScopeSim: a flexible general purpose astronomical instrument data simulation framework in Python [PDF]

open access: yesSoftware and Cyberinfrastructure for Astronomy VI, 2020
15 pages, 4 figures, SPIE 2020 conference proceeding.
Leschinski, K.   +5 more
openaire   +4 more sources

Global Vlasov simulation on magnetospheres of astronomical objects

open access: yesJournal of Physics: Conference Series, 2013
Space plasma is a collisionless, multi-scale, and highly nonlinear medium. There are various types of self-consistent computer simulations that treat space plasma according to various approximations. We develop numerical schemes for solving the Vlasov (collisionless Boltzmann) equation, which is the first-principle kinetic equation for collisionless ...
Takayuki Umeda   +2 more
openaire   +1 more source

On the Indeterministic Nature of Star Formation on the Cloud Scale [PDF]

open access: yes, 2018
Molecular clouds are turbulent structures whose star formation efficiency (SFE) is strongly affected by internal stellar feedback processes. In this paper we determine how sensitive the SFE of molecular clouds is to randomised inputs in the star ...
Bieri, Rebekka   +5 more
core   +2 more sources

On the theory of astronomical maser. I. Statistics of maser radiation

open access: yes, 2009
In this paper we re-analyse the amplification process of broadband continuum radiation by astronomical masers in one-dimensional case. The basic equations appropriate for the scalar maser and the random nature of the maser radiation field are derived ...
Arechi   +35 more
core   +1 more source

Kinematic Evidence of an Embedded Protoplanet in HD 142666 Identified by Machine Learning

open access: yesThe Astrophysical Journal, 2023
Observations of protoplanetary disks have shown that forming exoplanets leave characteristic imprints on the gas and dust of the disk. In the gas, these forming exoplanets cause deviations from Keplerian motion, which can be detected through molecular ...
J. P. Terry   +3 more
doaj   +1 more source

Adaptive Optics Simulations for Siding Spring

open access: yes, 2012
Using an observational derived model optical turbulence profile (model-OTP) we have investigated the performance of Adaptive Optics (AO) at Siding Spring Observatory (SSO), Australia.
Goodwin, Michael   +2 more
core   +1 more source

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