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.
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"
127 results found.
- LIGO/Virgo S190814bv: des-gw190814a is consistent with an asteroid
- LIGO/Virgo S190814bv: no counterpart candidates in Nickel/Direct imaging and non-detections of 2019nmd and 2019nme
- LIGO/Virgo S190814bv: ATLAS forced photometry non-detections of DESGW candidates
- LIGO/Virgo S190814bv: no counterpart candidates in Keck I MOSFIRE imaging
- LIGO/Virgo S190814bv: No candidates from the Zwicky Transient Facility
- LIGO/Virgo S190814bv: KMTNet observation
- LIGO/Virgo S190814bv: No counterpart candidates in the Swift/BAT Observations
- LIGO/Virgo S190814bv: MeerLICHT coverage second preliminary skymap
- LIGO/Virgo S190814bv Global MASTER-Net optical observations
- LIGO/Virgo S190814bv : No counterpart candidate in TAROT-GRANDMA observations
- LIGO/Virgo S190814bv: no candidates from GOTO imaging observations
- LIGO/Virgo S190814bv: Candidates found in initial DESGW search
- LIGO/Virgo S190814bv: Upper limits from AGILE-GRID observations
- LIGO/Virgo S190814bv: Update on Sky-Localization and Source-Classification
- LIGO/Virgo S190814bv: no candidates from WHT imaging of candidate galaxies
- LIGO/Virgo S190814bv: GRAWITA TNG imaging of selected galaxies
- LIGO/Virgo S190814bv : no neutrino counterpart candidate in ANTARES search
- LIGO/Virgo S190814bv: Coverage and upper limits from MAXI/GSC observations
- LIGO/Virgo S190814bv: Liverpool Telescope imaging of selected galaxies
- LIGO/Virgo S190814bv: No counterpart candidates in AGILE-MCAL observations
- LIGO/Virgo S190814bv: Upper limits from Fermi-GBM Observations
- LIGO/Virgo S190814bv: Nordic Optical Telescope imaging of selected galaxies
- LIGO/Virgo S190814bv: Identification of a GW compact binary merger candidate
- LIGO/Virgo S190814bv: No counterpart candidates in INTEGRAL SPI-ACS prompt observation
- LIGO/Virgo S190814bv Global MASTER-Net observations report
- LIGO/Virgo S190814bv: Upper limits from IceCube neutrino searches
- LIGO/Virgo S190814bv: CLU/NED Galaxies in the 50% Localization Volume