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.
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').
24 results found.
- GRB 090404: millimeter detection
- GRB 060306: Further Analysis of SOAR and APO NIR Observations
- GRB 051008 Tautenburg Supernova Search
- GRB 051022: RTT150 optical observations
- GRB 051022: XRT Refined Spectral and Temporal Analysis--Correction
- GRB051022: Swift XRT measurement of jet break
- GRB 051022: XRT Refined Spectral and Temporal Analysis
- GRB 051022, refined optical astrometry
- Chandra Observations of GRB 051022
- GRB 051022 Chandra Observations scheduled
- GRB 051022: WSRT Radio Detection
- GRB 051022, mm counterpart
- GRB051022: host galaxy redshift
- GRB 051022: Swift/UVOT Upper Limits
- GRB051022: Radio Counterpart
- GRB 051022: SOAR JKs Observations
- Konus-Wind observation of GRB 051022
- GRB 051022: Magellan NIR imaging
- GRB 051022: Spectral Analysis Indicates That The Spectrum Is Absorbed
- GRB 051022, J & K-band observation
- GRB 051022 (=H3950): SXC Flight Localization is Valid
- GRB 051022: SSO40 Optical Observations
- GRB051022 (=H3590), A GRB Detected By HETE
- GRB 051022: Optical observations