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').
Advanced Search
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 140114A: ROTSE-III Optical Limits
- GRB 140114A: Swift-XRT refined Analysis
- GRB 140114A: Swift-BAT refined analysis
- GRB 140114A: Swift/UVOT Upper Limits
- GRB 140114A: KAIT Optical Upper Limit
- GRB 140103A: AAO optical afterglow candidate
- GRB 140104B: Further Swift XRT observations
- GRB 140114A: Enhanced Swift-XRT position
- GRB 140114A: RATIR Optical and NIR Afterglow Detection
- Fermi Gamma-ray Burst Monitor trigger 411362827 is not a GRB
- GRB 140102A: AAO optical upper limits
- GRB 140114A: P60 Observations
- GRB 140114A: Swift detection of a burst
- GRB 140108A: Konkoly optical observations
- GRB 140110A: Swift/UVOT retraction of UVOT candidates
- IPN Triangulation of GRB 140110A
- GRB 140110A: Swift/UVOT Observations
- GRB 140108A: Suzaku WAM observation of the prompt emission
- GRB 140104B: Suzaku WAM observation of the prompt emission
- GRB 140110A: Swift XRT observations
- GRB 140110A: Reported UVOT OT not GRB afterglow
- GRB 140110A: OT detection in Swift/UVOT imaging
- GRB 140108A BAT refined analysis update *CORRECTION*
- GRB 140108A BAT refined analysis update
- GRB 140110A: Fermi GBM observation
- GRB 140110A Tiled Swift observations
- GRB 140110A: Fermi-LAT detection of a burst
- GRB 140108A: Mondy optical upper limit
- GRB 140105A: MASTER-Net early optical observations and time correction
- GRB 131231A: AAO optical observations
- GRB 140108A: Swift-BAT refined analysis
- GRB 140108A: Fermi GBM detection
- GRB 140108A: Swift/UVOT Detection
- GRB 140108A: theoretical prediction of redshift and of supernova occurrence
- GRB 140108A: Swift-XRT refined Analysis
- GRB 140108A: Enhanced Swift-XRT position
- GRB 140108A: Mondy optical observations
- GRB 140108A: D50+BART optical candidate detection
- GRB 140108A: 1.23m CAHA observations
- GRB 140108A: MASTER-Net OT detection
- GRB 140108A: Prompt enhanced Swift-XRT position
- GRB 140108A: Swift detection of a burst
- New Fermi-LAT GRB Table
- GRB 140105A: HCT Observations
- GRB 140105A: continued iPTF observations and rejection of optical candidates
- Swift-BAT triggered on KS 1947+300
- GRB 140105A: Swift XRT observations
- GRB 140103A: Swift XRT afterglow confirmation
- GRB 140105A/Fermi410578384: MASTER-Net early optical observations
- GRB 140104B: Swift XRT observations
- GRB 140102A: Swift/UVOT Detection
- LOAO R-band Observation of GRB 140102A
- GRB 140105A: Fermi GBM detection
- GRB 140104B: Fermi GBM observation
- Fermi410578384: iPTF optical afterglow candidates for a possible short GRB
- GRB 140102A: BOOTES-4 early optical observations
- GRB 140104B: Fermi-LAT detection of a burst
- GRB 131209A: Further Swift XRT observations
- GRB 140103A: Lulin Optical r-band Observations
- GRB 131231A : Lulin Optical Observations
- GRB 131231A: CARMA 3mm detection
- Swift-BAT trigger 582894 is HR 1099 (Flare star)
- GRB140104A : Xinglong TNT observation. A bright star is located nearby
- GRB 140102A, Optical Observations
- GRB 131231A, Optical Observations
- GRB 140103A: P60 Observations
- GRB 140102A: P60 observations
- GRB 131231A: Swift/UVOT Observations of the Optical Afterglow
- GRB 131231A: Fermi GBM correction to GCN 15644
- GRB 140103A: Swift/UVOT Upper Limits
- Konus-Wind observation of GRB 131231A
- GRB 140102A: Fermi/GBM Observation
- GRB 131229A: Suzaku WAM observation of the prompt emission
- Konus-Wind observation of GRB 140102A
- GRB 140103A: Swift-XRT refined analysis
- GRB 140102A: GROND observations
- GRB 140103A, Swift-BAT refined analysis
- GRB 140102A: MAXI/GSC detection
- GRB 140102A, Swift-BAT refined analysis
- GRB 140102A: Swift-XRT refined Analysis
- GRB 140103A: MASTER-Net optical observations
- GRB 140102A: Fermi-LAT detection of a burst
- GRB 140102A: I-band observations from IAC80 and 1.23m CAHA telescopes
- GRB 140102A: Enhanced Swift-XRT position
- GRB 140103A: Swift detection of a burst
- GRB 140102A: Early optical observations from Nanshan
- GRB 131224B detected in ground analysis of Swift-BAT data
- GRB 140102A: Swift detection of a burst with optical counterpart
- GRB 131231A: Gemini-South Redshift
- GRB 131229A: Fermi GBM detection
- GRB 131231A: P60 observations
- GRB 131227A: KAIT light curve analysis
- GRB 131231A: Swift-XRT observations
- GRB 131231A : xinglong TNT optical observation
- GRB 131231A: MDM afterglow observation
- GRB 131231A: VLT/X-shooter redshift
- GRB 131231A: Fermi GBM detection
- GRB 131231A: iPTF optical afterglow candidate coincident with Nanshan detection
- GRB 131231A: afterglow confirmation from the NOT
- GRB 131231A: Nanshan afterglow candidate