Results 11 to 20 of about 300,638 (255)
Astrometry of directly imaged exoplanets with optical interferometry
Comptes Rendus. Physique, 2023 Optical interferometry has always been seen as a promising but difficult technique for astronomy. Until the year 2018, it was excrucially limited in sensitivity to magnitudes below 10.
Lacour, Sylvestre
doaj +1 more source
An efficient photoelectric X-ray Polarimeter for the study of Black Holes and Neutron Stars [PDF]
, 2001 In astronomy there are basically four kinds of observations to extract the information carried by electromagnetic radiation: photometry, imaging, spectroscopy and polarimetry.
Bellazzini, Ronaldo +5 more
core +2 more sources
Incorporating interactive 3-dimensional graphics in astronomy research papers [PDF]
, 2007 Most research data collections created or used by astronomers are intrinsically multi-dimensional. In contrast, all visual representations of data presented within research papers are exclusively 2-dimensional.
Abt +24 more
core +4 more sources
The MEGA Advanced Compton Telescope Project [PDF]
, 2001 The goal of the Medium Energy Gamma-ray Astronomy (MEGA) telescope is to improve sensitivity at medium gamma-ray energies (0.4-50 MeV) by at least an order of magnitude over that of COMPTEL. This will be achieved with a new compact design that allows for
A Zoglauer +9 more
core +2 more sources
Радіоелектронні і комп'ютерні системи, 2017 Considered characteristic task for radio astronomy, detection spatio-temporal noise-like signal emitted by extended radiation source, observations of which are conducted in a parametrically uncertain noise conditions.
Александр Дмитриевич Абрамов +1 more
doaj +1 more source
A Homogenous Set of Globular Cluster Relative Distances and Reddenings [PDF]
, 2004 We present distance modulus and reddening determinations for 72 Galactic globular clusters from the homogeneous photometric database of Piotto et al. (2002), calibrated to the HST flight F439W and F555W bands.
A. Aparicio +72 more
core +4 more sources
Sensors, 2022 To detect faint target stars of 22nd magnitude and above, an astronomical exploration project requires its space camera’s readout noise to be less than 5e− with long-time working stability. Due to the limitation of satellite, the traditional CCD detector-
Chao Shen, Caiwen Ma, Wei Gao
doaj +1 more source
Domesticating Light: Standards and Artisanal Knowledge in Early Astrophysics
HoST, 2020 Astrophysics was born in the nineteenth century as a “New Astronomy” (in the words of Samuel Langley, 1884), a knowledge built primarily by amateurs who explored deep space by studying the Sun, stars and nebulae.
Ordóñez Javier
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Coordinated thermal and optical observations of Trans-Neptunian object (20000) Varuna from Sierra Nevada [PDF]
, 2002 We report on coordinated thermal and optical measurements of trans-Neptunian object (20000) Varuna obtained in January-February 2002, respectively from the IRAM 30-m and IAA 1.5 m telescopes.
A. Doressoundiram +17 more
core +4 more sources
The Full Spectrum Galactic Terrarium: MHz to TeV Observations of Various Critters [PDF]
, 2008 Multi-wavelength studies at radio, infrared, optical, X-ray, and TeV wavelengths have discovered probable counterparts to many Galactic sources of GeV emission detected by EGRET.
A. Djannati-Atai +18 more
core +4 more sources