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.
Advanced Search Examples (click to copy):
subject:"Swift"body:"GRB"submitter:"Judith Racusin"27113 results found.
- Swift trigger(=301779) is not a GRB
- GRB 080122 : Suzaku WAM observation of the prompt emission
- GRB 080121: Swift/UVOT upper limits
- Two non-burst Swift SubThreshold triggers
- GRB 080121: Swift-BAT detection of a very weak, short burst
- GRB 080123: Swift/UVOT refined analysis
- GRB 080123, Swift-BAT refined analysis
- GRB 080123: Swift detection of a short burst
- GRB 080120: Swift-XRT refined analysis
- UVOT detection of GRB080120
- Transient XRF 080109 / SN 2008D: Mount Abu NIR observations
- Gemini-South observations of XRF 080109 / SN 2008D
- Swift observations of the X-ray transient in NGC 2770 (aka SN2008D)
- GRB 071227: Suzaku WAM observation of the prompt emission
- Konus-Wind observation of GRB 071227
- GRB 071227: Swift-XRT refined analysis
- GRB071227: Swift/UVOT refined analysis
- Swift-BAT refined analysis of short GRB 071227
- GRB 071227: Swift detection of a burst
- GRB 070429B: Possible UVOT Detection of an Optical Afterglow
- Swift-BAT trigger 298308 is not a GRB
- GRB 071208?: Swift detection of a possible burst
- GRB 071125: Suzaku WAM observation of the prompt emission
- GRB 071129, Swift-BAT refined analysis
- GRB 071129: Swift detection of a burst
- Disregard the "GRB 071126" position
- GRB071122: Swift/UVOT Observations
- GRB 071122, Swift-BAT refined analysis
- GRB 071122 Swift-XRT refined analysis
- GRB 071122: ROTSE-III Optical Limits
- GRB 071122: Swift detection of a burst
- GRB071118 MITSuME OAO optical observation
- Swift/UVOT observations of GRB071118
- GRB 071117: Swift-XRT revised position
- Konus-Wind and Konus-A observations of GRB 071117
- Swift XRT follow-up observations of GRB071008
- Swift/UVOT upper limits for GRB 071117
- GRB071118: Swift XRT refined analysis
- GRB 071118, Swift-BAT refined analysis
- GRB 071117: TAROT La Silla observatory optical observations
- GRB 071118: Swift detection of a burst
- GRB 071117: Swift-XRT refined analysis
- GRB 071117, Swift-BAT refined analysis
- GRB 071117: Initial Swift/UVOT observations
- GRB 071117: Swift detection of a bright burst
- Swift detection of MXB 0656-072
- Correction to the Swift-BAT Transient Identification (trigger=296683)
- GRB 071112C MITSuME Akeno early optical observation
- GRB 071112C: SARA upper limit
- GRB 071112C: Swift-BAT refined analysis
- GRB 071112C: Swift/UVOT observations
- GRB 071112C: Swift XRT refined analysis
- Swift UVOT upper limits of GRB071112B
- GRB 071112B: Swift-XRT preliminary analysis
- GRB 071112B, Swift-BAT partial refined analysis of the SHB
- Swift-BAT trigger 296491 is not a GRB
- GRB 071112C: TAROT Calern observatory optical observations
- GRB 071112C: ROTSE-III Confirmation of Optical Counterpart
- GRB 071112B: ROTSE-III Rapid Optical Limits
- GRB 071112C: Swift detection of a burst with an optical counterpart
- GRB 071112B: Swift detection of a short hard burst
- GRB 071112: Swift detection of a possible burst
- Swift/UVOT initial analysis of GRB071109
- GRB 071109: further Swift-XRT analysis
- GRB 071109: TAROT Calern observatory optical observations
- GRB 071109: Swift-XRT possible X-ray counterpart
- GRB 071104: Swift-XRT Team Refined Analysis
- GRB 071104: Possible Swift UVOT Afterglow Candidate
- GRB 071104: Swift-XRT position
- GRB 071101, Swift-BAT refined analysis
- GRB 071101: TAROT Calern observatory optical observations
- GRB 071101: Swift XRT position
- GRB 071101: Swift detection of a burst
- GRB 071031, Swift-BAT refined analysis
- GRB 071031: Swift/UVOT detection of afterglow
- GRB 071020: MITSuME Akeno optical observations
- GRB 071031: VLT high-resolution spectroscopy
- GRB 071031: GROND detection in all bands
- GRB 071031: Swift detection of a burst with an optical counterpart
- GRB 071028B Swift-BAT detection of a burst
- GRB 071028: SARA observations of variable source
- Swift UVOT upper limits to GRB071028
- GRB 071028, Swift-BAT refined analysis
- GRB 071028: Swift detection of a burst
- GRB 071025: Kuiper Telescope Optical Observations
- GRB 071025A: RAPTOR Observations of Complex Early Optical Behavior
- GRB071021: MARGE Optical Limits
- GRB071020, optical upper limit
- GRB 071025: SARA VRI upper limits
- GRB 071025A: Complex Early-Time IR Behavior, Simultaneous with Gamma- and X-rays
- Swift UVOT upper limits
- GRB 071025, Swift-BAT refined analysis
- GRB 071025: Early Super-LOTIS Observations
- GRB 071025: ROTSE-III Refined Analysis
- GRB 071025a: PAIRITEL observations
- GRB 071025: ROTSE-III Detection of Optical Counterpart
- GRB 071025: Swift detection of a burst
- GRB 071020: SARA observations
- GRB071021: MITSuME Okayama Optical Upper Limits
- GRB 071021: optical and NIR observations