GCN Circulars
GCN Circulars are rapid bulletins submitted by and distributed to the community. See the documentation for help with subscribing to or submitting Circulars.
Search for Circulars by submitter, subject, or body text (e.g. 'Fermi GRB').
To navigate to a specific circular, enter the associated Circular ID (e.g. 'gcn123', 'Circular 123', or '123').
To navigate to a specific circular, enter the associated Circular ID (e.g. 'gcn123', 'Circular 123', or '123').
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To narrow the search results, use advanced search syntax. This allows for specifying which circular field to search (submitter, subject, and/or body). For additional information, refer to the advanced search documentation.
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subject:"Swift"body:"GRB"submitter:"Judith Racusin"- GRB 110402A: fading optical afterglow
- Redshift of GRB 110402A theoretically estimated
- GRB 110402A: Suzaku WAM observation of the prompt emission
- GRB 110328/Swift J164449.3+573451: Chandra observations
- GRB 110402A: LOAO Optical Observation
- ICSP VLF observation of multiple SGR-like bursts from 1E 1841-045 on Feb. 9, 2011
- Comparison of ICSP VLF observation of GRB 090424 with satellite observations
- GRB 110328A / Swift J164449.3+573451: Keck LRIS R-band photometry
- GRB 110328A / Swift J164449.3+573451, HST Observations
- GRB 110328A / Swift J164449.3+573451: millimeter detection at PdBI
- GRB 110402A: Konus-Wind spectral lags and detailed energetics
- GRB 110401A: Fermi GBM detection
- GRB 110402A: Fermi GBM detection
- GRB 110402A: optical observations in Mondy
- GRB 110402A afterglow observation
- GRB 110328A / Swift J164449.3+573451: Keck/DEIMOS Optical Spectroscopy
- GRB 110402A: MITSuME Okayama and Ishigakijima Optical upper limits
- GRB 110328A/Swift J164449.3+573451: SARA-N detection
- GRB 110402A: Swift/UVOT detection of afterglow candidate
- GRB 110402A: Spectral lag indicates short hard burst
- Konus-Wind observation of GRB 110402A
- GRB 110402A: Konkoly observations
- GRB 110328A: Konkoly observations.
- GRB 110402A: Swift-BAT refined analysis
- GRB 110402A: Swift-XRT refined Analysis
- GRB 110402A: early optical limit by "Pi of the Sky"
- GRB 110402A: further NOT observations
- GRB110328A/Swift J164449.3+573451: Fermi LAT Observations
- GRB 110402A: PAIRITEL NIR Upper Limits
- GRB 110402A: Enhanced Swift-XRT position
- GRB 110402A: NOT afterglow confirmation
- GRB 110402A: Liverpool Telescope Observations
- GRB 110402A: Swift detection of a burst
- GRB 110328A / Swift J164449.3+573451: KASINICS NIR Observation
- GRB 110328A / Swift J164449.3+57345: Correction to GCN 11850
- GRB 110328A / Swift J164449.3+573451: Radio-optical/NIR Astrometry
- GRB 110328A / Swift J164449.3+573451: Infrared transient
- GRB 110328A / Swift J164449.3+573451: Mondy optical observations
- GRB 110328/Swift J164449.3+573451: Fermi observations
- GRB 110328A / Swift J164449.3+573451: KASINICS K-band Observation
- GRB 110328A / Swift J164449.3+573451
- GRB 110328A / Swift J164449.3+573451: EVLA observations of a brightening radio source
- GRB 110328A / Swift J164449.3+573451: X-ray analysis and a mini-blazar analogy
- GRB 110328A / Swift J164449.3+573451: Gemini and UKIRT IR observations
- GRB 110328A / Swift J164449.3+573451: PAIRITEL NIR Detection in 2nd Epoch
- GRB 110328A / Swift J164449.3+573451: No optical variability of the optical counterpart
- GRB 110328A / Swift J164449.3+573451: beamed emission
- GRB 110328A / Swift J164449.3+573451: BAT refined analysis
- GRB 110328A / Swift J164449.3+573451: CARMA mm detection
- GRB 110328A / Swift J164449.3+573451: Konkoly observations
- GRB 110328A / Swift J164449.3+573451: LOAO R-band Observation
- GRB 110328A / Swift J164449.3+573451: PAIRITEL NIR Upper Limits
- GRB 110328A / Swift J164449.3+573451: optical observations
- GRB 110328A / Swift J164449.3+573451: EVLA Detection
- GRB 110328B: Fermi-LAT Detection
- GRB 110328A / Swift J164449.3+573451: optical spectroscopy from GTC
- GRB 110328A: Gemini spectroscopic observations
- GRB 110213A, the review of the sky area in plate archives
- GRB 110328B: Fermi GBM detection
- GRB 110328A / Swift J164449.3+573451: NOT optical observations.
- GRB 110328A/ Swift J164449.3+573451 : Xinglong TNT Upper limit
- GRB / X-ray transient 110328A: MITSuME OkayamaOptical upper limits
- GRB 110328A / Swift J164449.3+573451: PTF Quiescent Optical Counterpart
- GRB 110328A: Enhanced Swift-XRT position
- GRB / X-ray transient 110328A: Gemini optical observations
- GRB 110328A: a second trigger, probably a hard X-ray transient (Swift J164449.3+573451)
- GRB 110328A: Swift detection of a burst
- GRB110318B : MOA optical upper limit
- Fermi Gamma-ray Burst Monitor trigger 322686470 (110324797) is not a GRB
- GRB 110319B Swift-XRT afterglow confirmation
- GRB 101225A: revised analysis of narrow band imaging
- GRB 110319B BAT refined analysis
- GRB 110319B: Swift/UVOT Upper Limits
- GRB 110318B: Swift/UVOT Upper Limits
- GRB 110319B: GROND upper limits
- GRB 110319B: Swift-XRT afterglow candidate.
- GRB 110319B found in ground analysis of Swift-BAT data
- GRB 110319A: Swift/UVOT Detection
- GRB 110319A: Swift-BAT refined analysis
- GRB 110319A: Swift-XRT refined Analysis
- GRB 110318B: GROND upper limits
- GRB 110319A: Enhanced Swift-XRT position
- GRB 110319A: Swift detection of a burst
- GRB 110318B: Swift-XRT refined Analysis
- GRB 110318A: Fermi GBM detection
- GRB 110318B: Swift-BAT refined analysis
- GRB 110318B: Enhanced Swift-XRT position
- GRB 110318A: Swift-BAT refined analysis
- GRB 110318B: Swift/UVOT Non-Detection of an Afterglow
- GRB 110318B: Swift detection of a burst
- GRB 110318A: Swift detection of a burst
- Fermi GBM trigger 321944155 (110316205) is not a GRB
- GRB 110315A: RTT150 optical observations
- GRB 110315A: Swift/UVOT Upper Limits
- GRB 110315A: Swift-XRT refined Analysis
- GRB 110315A: Swift-BAT refined analysis
- GRB 110315A: Enhanced Swift-XRT position
- GRB 110315A: MASTER early optical observations
- GRB 110315A: Swift detection of a burst
- GRB110312A: MITSuME Okayama Optical upper limits