Back to Search
Start Over
Gross spectral differences between bright and dim gamma-ray bursts
- Source :
- Astrophysical Journal, Part 2 - Letters. 435(2)
- Publication Year :
- 1994
- Publisher :
- United States: NASA Center for Aerospace Information (CASI), 1994.
-
Abstract
- We find that dim gamma-ray bursts (GRBs) are softer than bright GRBs, as indicated on average by data from the Burst and Transient Source Experiment (BATSE) on board the Compton Gamma Ray Observatory (CGRO). We show that this correlation is statistically significant with respect to variations due to random differences between GRBs. This effect is discernible using a variety of methods and data sets, including public domain data. We analyze several types of systematic errors and selection effects in the BATSE data and conclude that the observed effect is not dominated by any of them. We therefore assert that this dim/soft effect is a real property of GRBs. It is possible that this correlation is a consequence of the time dilation and that the burst sources are located at cosmological distances.
- Subjects :
- Astrophysics
Subjects
Details
- Language :
- English
- ISSN :
- 0004637X
- Volume :
- 435
- Issue :
- 2
- Database :
- NASA Technical Reports
- Journal :
- Astrophysical Journal, Part 2 - Letters
- Publication Type :
- Report
- Accession number :
- edsnas.19950045444
- Document Type :
- Report
- Full Text :
- https://doi.org/10.1086/187612