Results 11 to 20 of about 503 (57)

A New Approach to Astronomical Data Analysis Based on Multiple Variables

Advances in Astronomy, Volume 2023, Issue 1, 2023., 2023
Data analysis for a sample of celestial bodies generally is preceded by the completeness test in order to verify whether the sample objects are proper representatives of the corresponding part of the universe. A data set following a multivariate, continuous, uniform distribution is said to be “complete in space.” This paper introduces a new approach to
Prasenjit Banerjee, Asis Kumar Chattopadhyay, Soumita Modak, Yu Liu   +3 more
wiley   +1 more source

On the future of astrostatistics: statistical foundations and statistical practice

, 2012
This paper summarizes a presentation for a panel discussion on "The Future of Astrostatistics" held at the Statistical Challenges in Modern Astronomy V conference at Pennsylvania State University in June 2011.
A Gelman, A Webster, B Efron, B Efron, B Jackson, C J Miller, D Lynden-Bell, E D Feigelson, E D Feigelson, E Gosset, E J Zuiderwijk, E L Kaplan, J D Scargle, J G Scott, J. D. Scargle, J. D. Scargle, M J Bayarri, M Jordan, M Schmidt, M Woodroofe, N Meinshausen, R Development Core Team, R Protassov, R Weygaert van de, S M Stigler, Y P Varshni   +25 more
core   +1 more source

Bayesian astrostatistics: a backward look to the future

, 2012
This perspective chapter briefly surveys: (1) past growth in the use of Bayesian methods in astrophysics; (2) current misconceptions about both frequentist and Bayesian statistical inference that hinder wider adoption of Bayesian methods by astronomers ...
A Gelman, A Gelman, ACS Readhead, B Efron, BC Kelly, BD Ripley, BD Wandelt, C Graziani, DA Dyk van, DA Dyk van, DN Esch, ET Jaynes, ET Jaynes, FS Kitaura, G Patanchon, H Jeffreys, J Bovy, JM Petit, KS Mandel, M Kunz, M Lampton, MJ Bayarri, N Dobigeon, P Hadjicostas, PA Sturrock, PK Goel, RJ Carroll, RJ Little, S Luo, S Sinharay, SF Gull, SF Gull, T Budavári, TJ Loredo, TJ Loredo, TJ Loredo, TJ Loredo, TJ Loredo, TJ Loredo, TJ Loredo, TJ Loredo, TS Kuhn   +41 more
core   +1 more source

An analysis of feature relevance in the classification of astronomical transients with machine learning methods [PDF]

, 2016
The exploitation of present and future synoptic (multi-band and multi-epoch) surveys requires an extensive use of automatic methods for data processing and data interpretation.
Brescia, Massimo, Cavuoti, Stefano, D'Isanto, Antonio, Djorgovski, Stanislav G., Donalek, Ciro, Longo, Giuseppe, Riccio, Giuseppe   +6 more
core   +4 more sources

The Origin of the Solar Flare Waiting-Time Distribution

, 2000
It was recently pointed out that the distribution of times between solar flares (the flare waiting-time distribution) follows a power law, for long waiting times.
Wheatland, M. S.
core   +1 more source

Bayesian Unbiasing of the Gaia Space Mission Time Series Database

, 2017
21 st century astrophysicists are confronted with the herculean task of distilling the maximum scientific return from extremely expensive and complex space- or ground-based instrumental projects.
Delgado, Héctor E., Sarro, Luis M.
core   +1 more source

An Exploration of the Tully-Fisher Relation for Extreme Late-Type Spiral Galaxies [PDF]

, 1998
This paper explores the adherence of 47 extreme late-type galaxies to the B- and V-band Tully-Fisher relations defined by a sample of local calibrators. In both bands we find the mean luminosity at a given line width for extreme late-type spirals to lie ...
Bergvall N., Bica E., Bottinelli L., de Blok W. J. G., de Blok W. J. G., Fioc M., Fouque P., Freeman K. L., Heyl J. S., J. S. Gallagher III, Kamphuis J., Karachentsev I. D., L. D. Matthews, Persic M., Ronnback J., Ronnback J., Skillman E. D., Tully R. B., Vennik J., W. van Driel, Zwaan M. A.   +20 more
core   +3 more sources

Rigorous Analytic Solution to the Gravitational-wave Overlapping Event Rates

The Astrophysical Journal
In the era of the next-generation gravitational-wave detectors, signal overlaps will become prevalent due to the high detection rate and long signal duration, posing significant challenges to data analysis. While effective algorithms are being developed,
Ziming Wang, Zexin Hu, Lijing Shao
doaj   +1 more source

Robust joint modelling of sparsely observed paired functional data

Canadian Journal of Statistics, Volume 52, Issue 3, Page 734-754, September 2024.
Abstract A reduced‐rank mixed‐effects model is developed for robust modelling of sparsely observed paired functional data. In this model, the curves for each functional variable are summarized using a few functional principal components, and the association of the two functional variables is modelled through the association of the principal component ...
Huiya Zhou, Xiaomeng Yan, Lan Zhou
wiley   +1 more source

Statistical Properties of a Polarization Vector’s Ellipticity Angle

The Astrophysical Journal
The orientation of a polarization vector on the Poincaré sphere is defined by its position angle (PA) and ellipticity angle (EA). The radio emission from pulsars, magnetars, and fast radio bursts can be elliptically polarized, and measurements of the EA ...
M. M. McKinnon
doaj   +1 more source