Optical Biases in the GRB Redshift Observations
Abstract
The measured redshifts of gamma-ray bursts (GRBs), detected by the Swift satellite, seem to be larger on average than the redshifts of GRBs detected by other satellites. We analyzed the redshift distribution of GRBs triggered and observed by different satellites (Swift, HETE2, BeppoSax and Ulysses). After considering the possible biases, a significant difference was found at the p = 95.7% level in the redshift distributions of GRBs measured by HETE and Swift.
- Publication:
-
Baltic Astronomy
- Pub Date:
- 2009
- Bibcode:
- 2009BaltA..18..297B
- Keywords:
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- cosmology;
- gamma-rays: bursts