grb: Gamma ray burst (GRB) data

In emilygoren/MixtClust: Robust Clustering for Complete and Incomplete Data

Gamma ray burst (GRB) data

Description

Data on gamma ray bursts from the Burst and Transient Source Experiment (BATSE) 4Br catalogue. There are nine features (T50, T90, F1, F2, F3, F4, P64, P256, P1024) on 1,973 GRBs, where the features are defined as:

• T50, T90:The time by which 50 and 90 percent of the flux arrive, respectively.

• F1, F2, F3, F4:The time-integrated fluences in spectral channels 20–50, 50–100, 100–300 and >300 keV, respectively.

• P64, P256, P1024:The peak fluxes as measured within bins of 64, 256 and 1024 ms, respectively.

Usage

data(grb)

Format

An object of class "matrix" with 1973 rows (records/observations) and 9 columns (features).

Details

Missing values are represented with NA and non-missing values have been log10 transformed.

References

Souradeep Chattopadhyay & Ranjan Maitra, 2017. "Gaussian-mixture-model-based cluster analysis finds five kinds of gamma-ray bursts in the BATSE catalogue," Monthly Notices of the Royal Astronomical Society, 469(3): 3374-3389. https://doi.org/10.1093/mnras/stx1024

Souradeep Chattopadhyay & Ranjan Maitra, 2018. "Multivariate t-mixture-model-based cluster analysis of BATSE catalogue establishes importance of all observed parameters, confirms five distinct ellipsoidal sub-populations of gamma-ray bursts," Monthly Notices of the Royal Astronomical Society, 481(3): 3196-3209. https://doi.org/10.1093/mnras/sty1940

Emily M. Goren & Ranjan Maitra, 2022. "Fast model-based clustering of partial records," Stat, 11(1), e416. https://doi.org/10.1002/sta4.416

Examples

data(grb)

emilygoren/MixtClust documentation built on March 19, 2022, 2 p.m.