Results 21 to 30 of about 432,304 (191)

Time Series Analysis Methods and Detectability Factors for Ground-Based Imaging of the LCROSS Impact Plume

Remote Sensing, 2022
On 9 October 2009, multiple telescopes were used in a coordinated international observing campaign to acquire ground-based time series imaging to monitor the evolution of the impact plume from NASA’s Lunar CRater Observation and Sensing Satellite (LCROSS)
Paul D. Strycker, Nancy J. Chanover, Ruth L. Temme, Jonathan M. Schotte, Payton L. Mueller, Emily L. Karls   +5 more
doaj   +1 more source

Toward Machine-learning-based Metastudies: Applications to Cosmological Parameters

The Astrophysical Journal Supplement Series, 2023
We develop a new model for automatic extraction of reported measurement values from the astrophysical literature, utilizing modern natural language processing techniques.
Tom Crossland, Pontus Stenetorp, Daisuke Kawata, Sebastian Riedel, Thomas D. Kitching, Anurag Deshpande, Tom Kimpson, Choong Ling Liew-Cain, Christian Pedersen, Davide Piras, Monu Sharma   +10 more
doaj   +1 more source

Adaptive Real Time Imaging Synthesis Telescopes [PDF]

, 2012
The digital revolution is transforming astronomy from a data-starved to a data-submerged science. Instruments such as the Atacama Large Millimeter Array (ALMA), the Large Synoptic Survey Telescope (LSST), and the Square Kilometer Array (SKA) will measure
Wright, Melvyn
core   +2 more sources

The United Nations Basic Space Science Initiative: The TRIPOD concept [PDF]

, 2006
Since 1990, the United Nations is annually holding a workshop on basic space science for the benefit of the worldwide development of astronomy. Additional to the scientific benefits of the workshops and the strengthening of international cooperation, the
A.M. Mathai, Arne Henden, Bahcall, Barbara Thompson, Bennett, David Webb, Don Wentzel, H.M.K. Al-Naimiy, Hans Haubold, Haubold, Jeffrey Bennett, Joseph Davila, Lang, Masatoshi Kitamura, McKee, Nat Gopalswamy   +15 more
core   +2 more sources

Analysis of Zeeman effect data in radio astronomy

The Astrophysical Journal Supplement Series, 1990
The analysis of Zeeman effect data in radio astronomy is discussed; in particular, previous techniques are extended to include the case of low signal-to-noise ratios. Three statistical techniques for estimating the line-of-sight magnetic field are considered: maximum likelihood, least-squares, and Wiener filters.
R. J. Sault, N. E. B. Killeen, J. Zmuidzinas, R. Loushin   +3 more
openaire   +1 more source

A new seismic analysis of Alpha Centauri [PDF]

, 2003
Models of alpha Cen A & B have been computed using the masses determined by Pourbaix et al. (2002) and the data derived from the spectroscopic analysis of Neuforge and Magain (1997).
Briquet, M., Dupret, M. -A., Montalban, J., Noels, A., Scuflaire, R., Thoul, A., Vatovez, B.   +6 more
core   +1 more source

Using Contour Trees in the Analysis and Visualization of Radio Astronomy Data Cubes [PDF]

, 2021
The current generation of radio and millimeter telescopes, particularly the Atacama Large Millimeter Array (ALMA), offers enormous advances in observing capabilities. While these advances represent an unprecedented opportunity to facilitate scientific understanding, the increased complexity in the spatial and spectral structure of these ALMA data cubes
Rosen, Paul, Seth, Anil, Mills, Betsy, Ginsburg, Adam, Kamenetzky, Julia, Kern, Jeff, Johnson, Chris R., Wang, Bei   +7 more
openaire   +2 more sources

A search for periodicity in the light curves of selected blazars

, 2005
We present an analysis of multifrequency light curves of the sources 2223-052 (3C 446), 2230+114 (CTA 102), and 2251+158 (3C 454.3), which had shown evidence of quasi-periodic activity.
A. Ciaramella, A. J. Kemball, A. P. Lobanov, A.M. Stirling, B. C. Kelly, B. Sundelius, C. Barbieri, C. Barbieri, C. M. Raiteri, C.-y. Su, F. T. Rantakyrö, G. B. Sholomitsky, H. D. Aller, H. Teräsranta, I. I. K. Pauliny-Toth, I. Jurkevich, J. F. Zhou, J. H. Fan, J. J. Blom, J. L. Gomez, J. L. Gomez, J. R. Webb, K. I. Kellermann, M. F. Aller, M. G. Haehnelt, M. Lainela, M. R. Kidger, M. R. Kidger, M. T. Hanski, M. Tornikoski, M. Villata, N. A. Kudryavtseva, P. A. Hughes, R. A. Edelson, R. B. Pomphrey, S. G. Jorstad, T. B. Pyatunina, T. B. Pyatunina, T. Pursimo, T. V. Cawthorne, Y. Terzian   +40 more
core   +1 more source

Research Data in Astronomy: Assessing its Impact and Visibility through a Bibliometric Analysis

Bulletin of the AAS, 2022
In the context of the Open Access and Open Science initiatives, Research Data Management becomes relevant and of current interest to researchers, libraries and institutions that contribute to the development of scientific knowledge. Particularly in Astronomy, it is a challenge to convert, standardize, process and arrange large volumes of information ...
Cortes-Rodriguez, Patricio, Depoortere, Denise, Opazo-Calfin, Lucy   +2 more
openaire   +3 more sources

Evaluation of the Effectiveness of Sonification for Time-series Data Exploration

The Astronomical Journal
Astronomy is a discipline primarily reliant on visual data. However, alternative data representation techniques are being explored, in particular “sonification,” namely, the representation of data into sound.
L. Guiotto Nai Fovino, A. Zanella, M. Grassi   +2 more
doaj   +1 more source