Study of the temporal and spectral characteristics of gamma ray bursts

Thesis/Dissertation · Fri Dec 31 23:00:00 EST 1982

OSTI ID:5472933

Norris, J P

Gamma-ray burst data obtained from the ISEE-3 Gamma-Ray Burst Spectrometer and the Solar Maximum Mission's Hard X-Ray Burst Spectrometer (HXRBS) have been analyzed to yield information on burst temporal and spectral characteristics. A Monte Carlo approach was used to simulate the HXRBS response to candidate spectral models. Energy-loss spectra of those bursts determined to be within the detector field of view were deconvolved to produce incident photon spectra. At energies above about 100 keV, the spectra are well fit by exponential forms. At lower energies, 30 keV to 60 keV, depressions below the model continua are apparent in some burst spectra. The depressions are not instrumental or data-reduction artifacts, but rather are an intrinsic property of the spectra. Both the depressions and the continua evolve on a time scale as short as approx.1/4 second.

• Research Organization: Maryland Univ., College Park (USA)
• OSTI ID: 5472933
• Country of Publication: United States
• Language: English

Related Subjects

640101* -- Astrophysics & Cosmology-- Cosmic Radiation
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC GAMMA BURSTS
COSMIC RADIATION
DATA
ENERGY SPECTRA
EXPERIMENTAL DATA
INFORMATION
IONIZING RADIATIONS
MONTE CARLO METHOD
NEUTRON STARS
NUMERICAL DATA
PRIMARY COSMIC RADIATION
RADIATIONS
SPECTRA
STARS
TIME DEPENDENCE