GCN Circulars
GCN Circulars are rapid astronomical bulletins submitted by and distributed to community members worldwide. They are used to share discoveries, observations, quantitative near-term predictions, requests for follow-up observations, or future observing plans related to high-energy, multi-messenger, and variable or transient astrophysical events. See the documentation for help with subscribing to or submitting Circulars.
To navigate to a specific circular, enter the associated Circular ID (e.g. 'gcn123', 'Circular 123', or '123').
31 results found.
- GRB 070809: The Swift evidence for the SHB nature of this burst
- GRB 070714B, Swift-BAT refined analysis of the short hard burst
- GRB 061201: Magellan Redshift of nearby Abell cluster
- GRB 060502B: A Bright Early-type Galaxy as Putative Host of the Short Burst
- Short GRB 060502B: Tautenburg Observation
- GRB 060313: Further analysis of the Swift-BAT bright short hard burst
- GRB 051227: Further analysis of the Swift-BAT burst
- GRB 051221A: Refined spectral and temporal analysis of the Swift-BAT short hard burst
- GRB 051221: Correction to GCN #4368
- GRB 050911: z~0.16 cluster in the field
- GRB 050906: Swift-BAT refined analysis
- GRB 050813: Gemini spectroscopy and redshifts of galaxies B and C
- GRB 050813: Magellan detection of a high redshift galaxy cluster
- GRB 050724: Secure Host Redshift from Keck
- GRB 050724: WHT optical observations
- GRB 050724: Chandra Observations of the X-ray Afterglow
- GRB 050724, SMARTS optical/IR afterglow observations
- GRB 050724: dust-scattered X-ray halo detected in SWIFT/XRT observation
- GRB 050724: Optical Variability in Nearby Galaxy
- GRB 050724: J-band observations
- GRB 050724: GMOS Imaging and Spectroscopy
- GRB 050724: SWIFT XRT refined position
- GRB 050724: spectroscopy of object in the XRT error circle
- GRB 050724: Optical limit
- GRB 050724: optical and near-IR observations
- GRB 050724: Optical imaging/astrometry
- GRB 050724: RTT150 optical observations
- GRB 050724: Swift/UVOT Upper Limit
- GRB 050724: early Swift XRT analysis results
- GRB 050724 : Lulin early R-band monitoring observations
- GRB 050724: possible host galaxy in DSS