Table 1
28 type-I gamma ray bursts with possible redshift measurements and T90 duration equal to or shorter than four secondsa.
GRB | Instrument | Optical afterglow | Duration [s] | Redshift | Classification |
|
|||||
020531 | HETE | yes | 1.0 | 1.0 | probable |
040924 | HETE | yes | ~1.5 | 0.859 | reliable |
050416 | SWIFT/XRT | yes | 2.4 ± 0.2 | 0.6535 ± 0.002 | reliable |
050509B | SWIFT/XRT | no? | 0.03 | 0.2248 ± 0.0002 | implausible |
050709 | HETE | yes | 0.22 ± 0.05 | 0.1606 ± 0.0001 | reliable |
050724 | SWIFT/XRT | yes | 3.0 ± 1.0 | 0.2576 ± 0.0004 | reliable |
050813 | SWIFT/XRT | yes? | 0.6 ± 0.1 | 0.722 | probable |
050906 | SWIFT/BAT | no | 0.128 ± 0.016 | 0.43 | implausible |
051016B | SWIFT/XRT | yes | 4.0 ± 0.1 | 0.9364 | reliable |
051221A | SWIFT/XRT | yes | 1.4 ± 0.2 | 0.5465 | reliable |
060502B | SWIFT/XRT | no | 0.09 ± 0.02 | 0.287 | reliable |
060505 | SWIFT/XRT | yes | 4 ± 1 | 0.089 | probable |
060801 | SWIFT/XRT | no | 0.5 ± 0.1 | 1.131 | reliable |
061006 | SWIFT/XRT | yes | 130 ± 10 | 0.4377 ± 0.0002 | reliable |
061201 | SWIFT/XRT | yes | 0.8 ± 0.1 | 0.111 | reliable |
061210 | SWIFT/XRT | no | 85 ± 5 | 0.41 | implausible |
061217 | SWIFT/XRT | no | 0.3 ± 0.05 | 0.827 | probable |
070209 | SWIFT/BAT | no | 0.10 ± 0.02 | 0.314 | implausible |
070406 | SWIFT/BAT | no | 0.7 ± 0.2 | 0.11 | implausible |
070429B | SWIFT/XRT | yes? | 0.5 ± 0.1 | 0.9023 ± 0.0002 | reliable |
070714B | SWIFT/XRT | yes | 64 ± 5 | 0.9225 ± 0.0001 | reliable |
070724 | SWIFT/XRT | no | 0.4 ± 0.04 | 0.457 | probable |
070810B | SWIFT/XRT | no? | 0.08 ± 0.01 | 0.49 | probable |
071227 | SWIFT/XRT | yes | 1.8 ± 0.4 | 0.384 | reliable |
080121 | SWIFT/XRT | no | 0.7 ± 0.2 | 0.046 | probable |
080520 | SWIFT/XRT | yes | 2.8 ± 0.7 | 1.545 | reliable |
090417A | SWIFT/BAT | no | 0.072 ± 0.018 | 0.088 | implausible |
090510 | SWIFT/XRT | yes | 0.3 ± 0.1 | 0.903 ± 0.003 | reliable |
Notes. The data for these GRB’s are taken from (O’Shaughnessy et al. 2008b) and from diverse GCN circulars (http://gcn.gsfc.nasa.gov/gcn3_archive.html). Reliable redshift values are marked in bold, while implausible redshift values are marked in italics.
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