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').
21 results found.
- IceCube Alert 220220.60:NuEm-220220A: MASTER optical possible counterpart
- GRB 201014A: 2.0m HCT upper limit
- GRB 201014A: SAO RAS optical observations
- GRB 201014A: 3.6m DOT Optical Observations
- GRB 201014A: MMT afterglow detection
- IceCube-201014A: No significant detection in HAWC
- GRB 201014A: Nanshan/NEXT optical observations
- GRB 201014A: Lowell Discovery Telescope afterglow imaging
- GRB 201014A: Redshift from GTC/OSIRIS
- GRB 201014A: Swift/UVOT Upper Limits
- GRB 201014A: Swift-XRT refined Analysis
- IceCube-201014A: Upper limits from a search for additional neutrino events in IceCube
- GRB 201014A: BOOTES-1 and -2 early optical upper limits
- GRB 201014A: Swift-BAT refined analysis
- GRB 201014A (Swift trigger =1000255): CrAO/ZTSH optical afterglow discovery
- Swift-BAT trigger 1000255: XRT afterglow detection of GRB 201014A
- IceCube-201014A: No neutrino counterpart candidates in ANTARES search
- Fermi-LAT Gamma-ray Observations of IceCube-201014A
- IceCube-201014A: Not observable by GBM
- IceCube-201014A: No counterpart candidates in INTEGRAL SPI-ACS and IBIS prompt observation
- IceCube-201014A - IceCube observation of a high-energy neutrino candidate track-like event