Results 21 to 30 of about 23,959 (174)
Operational status of TAMA300 with the seismic attenuation system (SAS) [PDF]
, 2008 TAMA300 has been upgraded to improve the sensitivity at low frequencies after the last observation run in 2004. To avoid the noise caused by seismic activities, we installed a new seismic isolation system —- the TAMA seismic attenuation system (SAS ...
Agatsuma, K. +14 more
core +1 more source
, 2014 Although the extragalactic nature of 3C 48 and other quasi stellar radio sources was discussed as early as 1960 by John Bolton and others, it was rejected largely because of preconceived ideas about what appeared to be unrealistically high radio and ...
Kellermann, K. I.
core +1 more source
A novel type of very long baseline astronomical intensity interferometer [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 This article presents a novel type of very long baseline astronomical interferometer that uses the fluctuations, as a function of time, of the intensity measured by a quadratic detector, which is a common type of astronomical detector. The theory on which the technique is based is validated by laboratory experiments.
openaire +2 more sources
Integrated optics for astronomical interferometry. I. Concept and astronomical applications
, 1999 We propose a new instrumental concept for long-baseline optical single-mode interferometry using integrated optics which were developed for telecommunication.
F. Malbet +5 more
core +1 more source
, 2008 Measurements of the spectrum of the fluctuations of the output current of the quadratic detector of a telescope can be used to find unresolved astronomical gravitational lenses and determine time delays between their image components.
Alford +26 more
core +1 more source
Development of a digital astronomical intensity interferometer: laboratory results with thermal light [PDF]
Journal of Modern Optics, 2017 13 pages, 5 figures, Accepted into special issue of the Journal of Modern ...
Nolan Matthews +2 more
openaire +2 more sources
Spherical lamellar grating interferometer for airborne astronomical observations of far infrared objects [PDF]
Applied Optics, 1977 A lamellar grating has been developed to be used for very far ir observations on the Gerard P. Kuiper Airborne Observatory. The design characteristics and performance during laboratory testing and initial observations of Jupiter at wavelengths between 50 microm and 500 microm are presented.
J L, Pipher, M P, Savedoff, J G, Duthie
openaire +2 more sources
Confirmation of a Non‐Transiting Planet in the Habitable Zone of the Nearby M Dwarf L 98‐59
Astronomische Nachrichten, EarlyView.ABSTRACT Only 40 exoplanetary systems with five or more planets are currently known. These systems are crucial for our understanding of planet formation and planet‐planet interaction. The M dwarf L 98‐59 has previously been found to show evidence of five planets, three of which are transiting.
Paul I. Schwarz +2 more
wiley +1 more source
Liquid-helium-cooled Michelson interferometer [PDF]
, 1972 Interferometer serves as a rocket-flight spectrometer for examination of the far infrared emission spectra of astronomical objects. The double beam interferometer is readily adapted to make spectral scans and for use as a detector of discrete line ...
Augason, G. C., Young, N.
core +1 more source
Ultrabroadband Spacetime Nanoscopy of Terahertz Polaritons in a van der Waals Cavity
Small, EarlyView.This work introduces SYnchrotron SpaceTimE Mapping (SYSTEM), which captures real‐time evolution of polariton wave packets with ∼10 nm spatial and sub‐100 fs temporal resolution across an ultrabroadband 5 to 50 THz range. Here, SYSTEM directly visualizes the creation, interference, and decay of multiple high‐quality Fabry‐Pérot phonon polariton cavity ...
Lukas Wehmeier +17 more
wiley +1 more source