Results 1 to 10 of about 377 (60)

The Data Big Bang and the Expanding Digital Universe: High-Dimensional, Complex and Massive Data Sets in an Inflationary Epoch [PDF]

open access: yesAdvances in Astronomy, Volume 2010, Issue 1, 2010., 2010
Recent and forthcoming advances in instrumentation, and giant new surveys, are creating astronomical data sets that are not amenable to the methods of analysis familiar to astronomers.
McCollum, Bruce   +2 more
core   +5 more sources

Formation of the first three gravitational-wave observations through isolated binary evolution. [PDF]

open access: yesNat Commun, 2017
During its first 4 months of taking data, Advanced LIGO has detected gravitational waves from two binary black hole mergers, GW150914 and GW151226, along with the statistically less significant binary black hole merger candidate LVT151012.
Stevenson S   +6 more
europepmc   +6 more sources

Astronomy in the Big Data Era

open access: yesData Science Journal, 2015
The fields of Astrostatistics and Astroinformatics are vital for dealing with the big data issues now faced by astronomy. Like other disciplines in the big data era, astronomy has many V characteristics.
Yanxia Zhang, Yongheng Zhao
doaj   +3 more sources

Beyond Two-dimensional Mass–Radius Relationships: A Nonparametric and Probabilistic Framework for Characterizing Planetary Samples in Higher Dimensions

open access: yesThe Astrophysical Journal, 2023
Fundamental to our understanding of planetary bulk compositions is the relationship between their masses and radii, two properties that are often not simultaneously known for most exoplanets.
Shubham Kanodia   +4 more
doaj   +1 more source

TD-CARMA: Painless, Accurate, and Scalable Estimates of Gravitational Lens Time Delays with Flexible CARMA Processes

open access: yesThe Astrophysical Journal, 2023
Cosmological parameters encoding our understanding of the expansion history of the universe can be constrained by the accurate estimation of time delays arising in gravitationally lensed systems.
Antoine D. Meyer   +3 more
doaj   +1 more source

X-ray Time Lag Evaluation of MAXI J1820+070 with a Differential Cross-correlation Analysis

open access: yesThe Astrophysical Journal, 2023
MAXI J1820+070 is a transient black hole binary discovered on 2018 March 11. The unprecedented rich statistics brought by the NICER X-ray telescope allow detailed timing analyses up to ∼1 kHz uncompromised by photon shot noise. To estimate the time lags,
Tomoki Omama   +3 more
doaj   +1 more source

A Reinforcement Learning–Based Follow-up Framework

open access: yesThe Astronomical Journal, 2023
Classification and characterization of variable and transient phenomena are critical for astrophysics and cosmology. Given the volume of nightly data produced by ongoing and future surveys such as LSST, it is critical to develop automatic tools that ...
Javiera Astudillo   +3 more
doaj   +1 more source

PCAT-DE: Reconstructing Pointlike and Diffuse Signals in Astronomical Images Using Spatial and Spectral Information

open access: yesThe Astronomical Journal, 2023
Observational data from astronomical imaging surveys contain information about a variety of source populations and environments, and their complexity will increase substantially as telescopes become more sensitive.
Richard M. Feder   +7 more
doaj   +1 more source

Computational AstroStatistics: Fast and Efficient Tools for Analysing Huge Astronomical Data Sources [PDF]

open access: yes, 2006
Invited talk at "Statistical Challenges in Modern Astronomy III" July 18-21 2001.
Nichol, R. C.   +12 more
openaire   +2 more sources

Some statistical and computational challenges, and opportunities in astronomy [PDF]

open access: yes, 2004
The data complexity and volume of astronomical findings have increased in recent decades due to major technological improvements in instrumentation and data collection methods.
Babu, G. Jogesh, Djorgovski, S. George
core   +1 more source

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