Results 11 to 20 of about 23,959 (174)

Imaging through turbulence with a quadrature-phase optical interferometer [PDF]

open access: yes, 2005
We present an improved technique for imaging through turbulence at visible wavelengths using a rotation shearing pupil-plane interferometer, intended for astronomical and terrestrial imaging applications.
Dimotakis, Paul E.   +4 more
core   +1 more source

Astrophysics with the Laser Interferometer Space Antenna

open access: yesLiving Reviews in Relativity, 2023
The Laser Interferometer Space Antenna (LISA) will be a transformative experiment for gravitational wave astronomy, and, as such, it will offer unique opportunities to address many key astrophysical questions in a completely novel way.
Pau Amaro-Seoane   +157 more
doaj   +1 more source

Astronomical applications of interferometer [PDF]

open access: yesNature, 1975
The Intensity Interferometer: Its Application to Astronomy. By R. Hanbury Brown. Pp. xvi + 184. (Taylor and Francis: London, November 1974.) £6.
openaire   +1 more source

Astronomical random numbers for quantum foundations experiments [PDF]

open access: yes, 2018
Photons from distant astronomical sources can be used as a classical source of randomness to improve fundamental tests of quantum nonlocality, wave-particle duality, and local realism through Bell's inequality and delayed-choice quantum eraser tests ...
Brown, Amy   +5 more
core   +2 more sources

On the Possibility of Breaking the Heterodyne Detection Quantum Noise Limit With Cross-Correlation

open access: yesIEEE Access, 2018
The cross-correlation sensitivity of two identical balanced photodiode heterodyne receivers is characterized. Both the balanced photodiodes receive the same weak signal split up equally, a situation equivalent to an astronomical spatial interferometer. A
Ernest A. Michael, Felipe E. Besser
doaj   +1 more source

Development of a multistage laser frequency stabilization for an interferometric gravitational-wave detector [PDF]

open access: yes, 2003
Laser frequency stabilization is essential for interferometric gravitational-wave detectors to attain their target sensitivity. We have designed a multistage laser frequency stabilization system which has been applied in the development of the TAMA 300 ...
Barton, Mark A., Nagano, Shigeo
core   +1 more source

2023 Astrophotonics Roadmap: pathways to realizing multi-functional integrated astrophotonic instruments

open access: yesJPhys Photonics, 2023
Photonic technologies offer numerous functionalities that can be used to realize astrophotonic instruments. The most spectacular example to date is the ESO Gravity instrument at the Very Large Telescope in Chile that combines the light-gathering power of
Nemanja Jovanovic   +79 more
doaj   +1 more source

Study of the scientific potential of a three 40 cm Telescopes Interferometer at Dome C [PDF]

open access: yes, 2006
Recent site testing (see: http://www-luan.unice.fr/Concordiastro/indexantartic.html) has shown that Dome C in Antarctica might have a high potential for stellar interferometry if some solutions related to the surface atmospheric layer are found.
Lopez, B.   +6 more
core   +3 more sources

High-resolution broadband spectroscopy using externally dispersed interferometry at the Hale telescope: part 2, photon noise theory [PDF]

open access: yes, 2016
High-resolution broadband spectroscopy at near-infrared (NIR) wavelengths (950 to 2450 nm) has been performed using externally dispersed interferometry (EDI) at the Hale telescope at Mt.
Edelstein, Jerry   +6 more
core   +2 more sources

Sirius: a prototype astronomical intensity interferometer using avalanche photodiodes in linear mode [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2020
ABSTRACT Optical intensity interferometry, developed in the 1950s, is a simple and inexpensive method for achieving angular resolutions on microarcsecond scales. Its low sensitivity has limited intensity interferometric observations to bright stars so far.
Oh, J.   +5 more
openaire   +3 more sources

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