Results 11 to 20 of about 7,785,767 (337)

Minimal re-computation for exploratory data analysis in astronomy [PDF]

Astronomy and Computing, 2018
We present a technique to automatically minimise the re-computation when a data processing program is iteratively changed, or added to, as is often the case in exploratory data analysis in radio astronomy. A typical example is flagging and calibration of demanding or unusual observations where visual inspection suggests improvement to the processing ...
Nikolic, B, Small, D, Kettenis, M
openaire   +6 more sources

The Space Physics Environment Data Analysis System in Python

Frontiers in Astronomy and Space Sciences, 2022
In this article, we describe the free, open-source Python-based Space Physics Environment Data Analysis System (PySPEDAS), a platform for multi-mission, multi-instrument retrieval, analysis, and visualization of Heliophysics data.
Eric W. Grimes, B. Harter, N. Hatzigeorgiu, A. Drozdov, J. Lewis, V. Angelopoulos, Xin Cao, X. Chu, T. Hori, S. Matsuda, C. Jun, Satoko Nakamura, M. Kitahara, T. Segawa, Y. Miyoshi, O. Le Contel   +15 more
semanticscholar   +1 more source

A Data Science Platform to Enable Time-domain Astronomy [PDF]

Astrophysical Journal Supplement Series, 2023
SkyPortal is an open-source software package designed to discover interesting transients efficiently, manage follow-up, perform characterization, and visualize the results. By enabling fast access to archival and catalog data, crossmatching heterogeneous
M. Coughlin, J. Bloom, G. Nir, S. Antier, Theophile Jegou du Laz, S. Walt, Arien Crellin-Quick, T. Culino, D. Duev, D. Goldstein, Brian F. Healy, V. Karambelkar, Jada Lilleboe, K. Shin, L. Singer, T. Ahumada, S. Anand, E. Bellm, R. Dekany, M. Graham, M. Kasliwal, I. Kostadinova, R. W. Kiendrebeogo, Shrinivas Kulkarni, S. Jenkins, Natalie LeBaron, J. Neill, B. Parazin, J. Peloton, R. Riddle, B. Rusholme, J. Santen, J. Sollerman, R. Stein, D. Turpin, A. Wold, Carla Amat, Adrien Bonnefon, Adrien Bonnefoy, M. Flament, F. Kerkow, Sulekha Kishore, S. Jani, Stephen K. Mahanty, C. Liu, L. Llinares, Jolyane Makarison, Alix Olli'eric, Inés Pérez, L. Pont, Vyom Sharma   +50 more
semanticscholar   +1 more source

Persistent homology in cosmic shear: Constraining parameters with topological data analysis [PDF]

Astronomy & Astrophysics, 2020
In recent years, cosmic shear has emerged as a powerful tool for studying the statistical distribution of matter in our Universe. Apart from the standard two-point correlation functions, several alternative methods such as peak count statistics offer ...
S. Heydenreich, B. Bruck, J. Harnois-D'eraps   +2 more
semanticscholar   +1 more source

Data Combination: Interferometry and Single-dish Imaging in Radio Astronomy [PDF]

Publications of the Astronomical Society of the Pacific, 2023
Modern interferometers routinely provide radio-astronomical images down to subarcsecond resolution. However, interferometers filter out spatial scales larger than those sampled by the shortest baselines, which affects the measurement of both spatial and ...
A. Plunkett, Á. Hacar, Lydia Moser-Fischer, D. Petry, P. Teuben, N. Pingel, D. Kunneriath, T. Takagi, Y. Miyamoto, E. Moravec, S. Suri, K. Hess, Melissa Hoffman, B. Mason   +13 more
semanticscholar   +1 more source

Astronomy Data, Virtual Observatory and Education [PDF]

Proceedings of the International Astronomical Union, 2019
We shall present with examples how analysis of astronomy data can be used for an educational purpose to train users in methods of data analysis, statistics, programming skills and research problems.
P. Hasan, S. N. Hasan
semanticscholar   +1 more source

The second data release from the European Pulsar Timing Array. I. The dataset and timing analysis [PDF]

Astronomy & Astrophysics, 2023
Pulsar timing arrays offer a probe of the low-frequency gravitational wave spectrum (1 - 100 nanohertz), which is intimately connected to a number of markers that can uniquely trace the formation and evolution of the Universe.
J. Antoniadis, S. Babak, A. B. Nielsen, C. Bassa, A. Berthereau, M. Bonetti, E. Bortolas, P. Brook, M. Burgay, R. N. Caballero, A. Chalumeau, D. Champion, S. Chanlaridis, S. Chen, I. Cognard, G. Desvignes, M. Falxa, R. Ferdman, A. Franchini, J. Gair, B. Goncharov, E. Graikou, J. Grießmeier, L. Guillemot, Y. J. Guo, H. Hu, F. Iraci, D. Izquierdo-Villalba, J. Jang, J. Jawor, G. Janssen, A. Jessner, R. Karuppusamy, E. Keane, M. Keith, M. Kramer, M. A. Krishnakumar, K. Lackeos, K. Lee, K. Liu, Y. Liu, A. Lyne, J. Mckee, R. Main, M. Mickaliger, I. C. Niţu, A. Parthasarathy, B. Perera, D. Perrodin, A. Petiteau, N. Porayko, A. Possenti, H. Q. L. A. Samajdar, S. Sanidas, A. Sesana, G. Shaifullah, L. Speri, R. Spiewak, B. Stappers, S. Susarla, G. Theureau, C. Tiburzi, E. V. D. Wateren, A. Vecchio, V. V. Krishnan, J. Verbiest, J. Wang, L. Wang, Z. Wu   +68 more
semanticscholar   +1 more source

Tutorial guide to X-ray and gamma-ray astronomy: data reduction and analysis [PDF]

, 2020
This book provides a comprehensive introduction to X-ray and gamma-ray astronomy. The first part discusses the basic theoretical and observational topics related to black hole astrophysics; the optics and the detectors employed in X-ray and gamma-ray ...
Bambi, Cosimo
core   +1 more source

Kepler Bonus: Light Curves of Kepler Background Sources

The Astronomical Journal, 2023
NASA’s Kepler primary mission observed about 116 deg ^2 in the sky for 3.5 consecutive years to discover Earth-like exoplanets. This mission recorded pixel cutouts, known as target pixel files (TPFs), of over 200,000 targets that were selected to ...
Jorge Martínez-Palomera, Christina Hedges, Jessie Dotson   +2 more
doaj   +1 more source

A Machine-learning Approach to Predict Missing Flux Densities in Multiband Galaxy Surveys

The Astrophysical Journal, 2023
We present a new method based on information theory to find the optimal number of bands required to measure the physical properties of galaxies with desired accuracy.
Nima Chartab, Bahram Mobasher, Asantha R. Cooray, Shoubaneh Hemmati, Zahra Sattari, Henry C. Ferguson, David B. Sanders, John R. Weaver, Daniel K. Stern, Henry J. McCracken, Daniel C. Masters, Sune Toft, Peter L. Capak, Iary Davidzon, Mark E. Dickinson, Jason Rhodes, Andrea Moneti, Olivier Ilbert, Lukas Zalesky, Conor J. R. McPartland, István Szapudi, Anton M. Koekemoer, Harry I. Teplitz, Mauro Giavalisco   +23 more
doaj   +1 more source