Are There Any Redshift >8 Gamma-Ray Bursts in the BATSE Catalog?
Teresa Ashcraft, Bradley E. Schaefer

TL;DR
This study re-evaluates claims of high-redshift gamma-ray bursts in the BATSE catalog using multiple luminosity relations, finding no definitive evidence for bursts with redshift greater than 8.
Contribution
It applies five updated luminosity relations to estimate redshifts of BATSE GRBs, providing a more rigorous analysis that challenges prior claims of z>8 bursts.
Findings
No conclusive z>8 GRBs identified in BATSE data
Most candidate high-redshift bursts have large uncertainties
One burst possibly at z>20, but with low confidence
Abstract
Several luminosity indicators have been found for Gamma-Ray Bursts (GRBs) wherein measurable light curve and spectral properties are well-correlated with the peak luminosity. Several papers have each applied one different luminosity relation to find redshifts for BATSE GRBs and claim to identify specific bursts with z>8. The existence of such high redshift events is not surprising, as BATSE has enough sensitivity to see them and GRBs are expected out to the redshift of the first star formation. To improve results we used five luminosity relations with updated calibrations to determine redshifts with error bars. Combining these relations, we calculated the redshifts of 36 BATSE GRBs with claimed z>8. Our results include 13 bursts with our derived best redshift z_best>8, which looks promising at first. But the calculated redshift uncertainties are significantly large in these selected…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
