Published May 2005 | Version v1
Journal article Metadata-only

Principal-component analysis of Gamma-Ray Bursts' Spectra

Creators

  • 1. Eoetvoes Univ., Budapest (Hungary). Laboratory for Information Technology
  • 2. Bolyai Military Univ., Budapest (Hungary). Department of Physics
  • 3. Konkoly Observatory, Budapest (Hungary)
  • 4. Stockholm Observatory, Stockholm (Sweden)
  • 5. Charles Univ., Prague (Czech Republic). Astronomical Institute

Description

The principal-component analysis is a statistical method, which lowers the number of important variables in a data set. The use of this method for the bursts' spectra and afterglows is discussed in this paper. The analysis indicates that three principal components are enough among the eight ones to describe the variability of the data. The correlation between the spectral index α and the redshift suggests that the thermal emission component becomes more dominant at larger redshifts

Availability note (English)

Also available from http://dx.doi.org/10.1393/ncc/i2005-10045-1

Additional details

Identifiers

DOI
10.1393/ncc/i2005-10045-1;

Publishing Information

Journal Title
Nuovo Cimento della Societa Italiana di Fisica. C, Geophysics and Space Physics
Journal Volume
28C
Journal Issue
3
Journal Page Range
p. 295-298
ISSN
1124-1896

INIS

Country of Publication
Italy
Country of Input or Organization
Italy
INIS RN
37016496
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Descriptors DEI
COSMIC GAMMA BURSTS; COSMIC GAMMA SOURCES; COSMOLOGY; GAMMA RADIATION; RED SHIFT
Descriptors DEC
COSMIC RADIATION; COSMIC RAY SOURCES; ELECTROMAGNETIC RADIATION; IONIZING RADIATIONS; PRIMARY COSMIC RADIATION; RADIATIONS