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 120328B: Pi of the Sky simultaneous upper limits
- GRB 120326A: Bassano Bresciano Observatory - correction for GCN Cir 13178
- GRB 120403A: Swift detection of a burst
- GRB 120402A: Swift detection of a possible burst or noise
- GRB 120326A: Cima Rest and Bassano Brescia
- GRB 120327A: SMARTS optical/IR afterglow observations
- GRB 120401A: Swift-XRT refined Analysis
- GRB 120401A: Swift-BAT refined analysis
- GRB 120326A: HCT optical observations
- GRB 120401A: Enhanced Swift-XRT position
- GRB 120401A: Prompt enhanced Swift-XRT position
- GRB 120401A: Swift detection of a burst
- GRB 120326A: EVLA Observations
- GRB120327A - ATCA radio afterglow detection at 34GHz
- GRB 120324A: CrAO optical upper limit
- GRB 120326A: Bassano Bresciano Observatory lightcurve analisis
- GRB 120326A: MITSuME Ishigakijima Optical Observation at 3 days afterthe burst
- GRB 120326A : Suzaku WAM observation of the prompt emission
- GRB 120326A: CARMA 3mm detection
- GRB 120324A, the review of the sky area in plate archives
- Swift trigger 518853 is most likely GX 301-2
- GRB 120326A: Bassano Bresciano Observatory optical observations
- GRB 120328A: MITSuME Ishigakijima Optical Upper Limits
- GRB 120326A: MITSuME Ishigakijima Optical Observation at 2 days afterthe burst
- GRB 120327A: MITSuME Ishigakijima Optical Upper Limits at 1 day afterthe burst
- Swift trigger 518853: MASTER-ICATE possible OT
- The Swift-XRT source associated with trigger 518853 is a cosmic ray
- Trigger 518853: Swift detection of a probable Galactic transient
- GRB 120328B: Fermi-LAT Observations
- GRB 120327A: Zadko optical observations
- GRB 120328B: Fermi GBM detection
- long/intense GRB 120328B: MASTER follow up observations
- GRB 120328A: Swift/UVOT Upper Limits
- GRB 120326A: Bassano Bresciano Observatory further optical observations
- GRB 120328A: Swift-XRT refined Analysis
- Konus-Wind observation of GRB 120328B
- IPN Triangulation of GRB 120328B (long/intense)
- GRB 120327A: MITSuME Ishigakijima Optical Observation
- GRB 120326A: MITSuME Ishigakijima Optical Observation
- GRB 120328A: Swift-BAT refined analysis
- GRB 120328A: Enhanced Swift-XRT position
- GRB 120327A: NOT optical observations
- GRB 120328A: TAROT La Silla observatory optical observations
- GRB 120326A: Xinglong TNT further optical observation��correction for GCN Cir 13149)
- GRB 120326A: Xinglong TNT further optical observation
- Skynet/PROMPT observations of GRB120328A
- GRB 120328A: Swift detection of a burst
- GRB 120327A: GTC redshift confirmation
- GRB 120326A: Fermi GBM Observation
- GRB 120327A afterglow detection
- GRB 120326A: PAIRITEL NIR Observations
- GRB 120326A: Bassano Bresciano Observatory optical observations
- GRB 120327A: Swift-XRT refined Analysis
- GRB 120327A: CQUEAN grizY Observation
- GRB 120326A: LOAO R-band Observations
- GRB 120327A: Swift/UVOT further analysis
- GRB 120327A: Swift-BAT refined analysis
- GRB 120326A : SMA submm observation
- GRB 120327A: Enhanced Swift-XRT position
- GRB 120327A: X-shooter redshift
- GRB 120327A: Gemini-South redshift
- GRB 120327A: TAROT La Silla observatory optical decay
- GRB120326A: TNT optical observation
- GRB 120327A: IAC80 I-band observations
- GROND observations of GRB 120327A
- GRB 120327A: REM NIR and optical observations
- Skynet/PROMPT observations of GRB120327A
- GRB 120326A: Maisoncelles Observatory optical observations
- GRB 120327A: Liverpool Telescope Observations
- GRB 120327A: TAROT La Silla observatory optical detection
- GRB 120327A: Swift detection of a burst with an optical counterpart
- GRB 120326A: optical observation of GMG
- GRB 120326A : LOT optical observation
- GRB 120326A: Swift-BAT refined analysis
- GRB 120326A: T17 optical observations
- GRB 120326A: GTC redshift
- GRB 120326A: CQUEAN grizY Observation
- GRB 120323A: MASTER follow up observations
- GRB 120326A: Swift-XRT refined Analysis
- GRB 120326A: Swift/UVOT Detection
- GRB 120326A: Optical observations at Crni Vrh
- GRB120326A: IAC80 observations
- GRB 120326A: Liverpool Telescope observations
- GRB 120326A: Enhanced Swift-XRT position
- Skynet/Dolomiti Observations of GRB120326A
- GRB 120326A: TAROT Calern observatory afterglow optical decay
- GRB 120326A: TAROT Calern observatory afterglow optical detection
- GRB 120326A: ROTSE-III Optical Limits
- GRB 120326A: Swift detection of a burst
- GRB 120323A: Fermi LAT observations
- Konus-Wind observation of GRB 120323A
- IPN Triangulation of GRB 120323A (short/very intense)
- GRB 120324A: Swift-XRT refined Analysis
- Konus-Wind observation of GRB 120324A
- GRB 120323A: Fermi GBM detection
- GRB 120324A: GROND observations
- GRB 120324A: CQUEAN rizY Observation
- GRB 120324A: Swift-BAT refined analysis
- GRB 120324A: Swift/UVOT Upper Limits
- GRB 120324A: TAROT La Silla observatory optical observations