Results 41 to 50 of about 432,304 (191)
Bayesian analysis of exoplanet and binary orbits
, 2012 We introduce BASE (Bayesian astrometric and spectroscopic exoplanet detection and characterisation tool), a novel program for the combined or separate Bayesian analysis of astrometric and radial-velocity measurements of potential exoplanet hosts and ...
Armstrong +45 more
core +1 more source
Comparison between Windowed FFT and Hilbert-Huang Transform for Analyzing Time Series with Poissonian Fluctuations: A Case Study [PDF]
, 2006 Hilbert-Huang Transform (HHT) is a novel data analysis technique for nonlinear and non-stationary data. We present a time-frequency analysis of both simulated light curves and an X-ray burst from the X-ray burster 4U 1702-429 with both the HHT and the ...
Dong Han +5 more
core +3 more sources
The Astrophysical Journal Supplement SeriesIn this paper, we developed a spectral emulator based on the Mapping Nearby Galaxies at Apache Point Observatory Stellar Library (MaStar) and a grouping optimization strategy to estimate effective temperature ( T _eff ), surface gravity (log g ...
Jun-Chao Liang +9 more
doaj +1 more source
The Design and Operation of The Keck Observatory Archive [PDF]
, 2014 The Infrared Processing and Analysis Center (IPAC) and the W. M. Keck Observatory (WMKO) operate an archive for the Keck Observatory. At the end of 2013, KOA completed the ingestion of data from all eight active observatory instruments. KOA will continue
Berriman, G. Bruce +8 more
core +2 more sources
Data Processing and Analysis for Space-Based Astronomy [PDF]
International Astronomical Union Colloquium, 1977 AbstractThe sensors on a spacecraft, the spacecraft data handling system, the mission support ground data system, the experimenter’s scientific data reduction and analysis system, the post-mission data storage and dissemination system all comprise elements of the data handling system for a space-based astronomy.Primary treatement is given to the ...
openaire +1 more source
Epidemic risk perception and social interactions lead to awareness cascades on multiplex networks
Journal of Physics: ComplexityThe course of an epidemic is not only shaped by infection transmission over face-to-face contacts, but also by preventive behaviour caused by risk perception and social interactions.
Tim Van Wesemael +2 more
doaj +1 more source
Two-stage Hierarchical Framework for Solar Flare Prediction
The Astrophysical Journal Supplement Series, 2023 Solar flares, often accompanied by coronal mass ejections and other solar phenomena, are one of the most important sources affecting space weather. It is important to investigate the forecast approach of solar flares to mitigate their destructive effect ...
Hao Deng +6 more
doaj +1 more source
The ACIGA Data Analysis programme
, 2004 The Data Analysis programme of the Australian Consortium for Interferometric Gravitational Astronomy (ACIGA) was set up in 1998 by the first author to complement the then existing ACIGA programmes working on suspension systems, lasers and optics, and ...
+11 more
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L-dwarf Detection from SDSS Images using Improved Faster R-CNN
The Astronomical Journal, 2023 We present a data-driven approach to automatically detect L dwarfs from Sloan Digital Sky Survey (SDSS) images using an improved Faster R-CNN framework based on deep learning.
Zhi Cao +6 more
doaj +1 more source
, 2013 We have created a digital spectral library, using low resolution optical spectra, of photometric and spectral standard stars. The data were acquired using the Cassegrain Spectrograph installed on the 1.9m Radcliffe telescope at the South African ...
James, David
core +1 more source