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').
17 results found.
- LIGO/Virgo S190727h: Updated sky localization
- LIGO/Virgo S190727h: AstroSat CZTI upper limits
- LIGO/Virgo S190727h: Gaia Photometric Alerts transient candidate
- LIGO/Virgo S190727h: No transient candidates in CALET observations
- LIGO/Virgo S190727h: No counterpart candidates in KAIT observations
- LIGO/Virgo S190727h: No counterpart candidates in the Swift/BAT Observations
- LIGO/Virgo S190727h: No counterpart candidates in Fermi-LAT observations
- LIGO/Virgo S190727h: possible counterpart candidate in SPI-ACS/INTEGRAL
- LIGO/Virgo S190727h: Upper limits from Fermi-GBM Observations
- LIGO/Virgo S190727h: No counterpart candidates in HAWC observations
- LIGO/Virgo S190727h : no neutrino counterpart candidate in ANTARES search
- LIGO/Virgo S190727h: No counterpart candidates in AGILE-MCAL observations
- LIGO/Virgo S190727h: No counterpart candidates in INTEGRAL SPI-ACS prompt observation
- LIGO/Virgo S190727h: Coverage and upper limits from MAXI/GSC observations
- LIGO/Virgo S190727h: Identification of a GW compact binary merger candidate
- LIGO/Virgo S190727h Global MASTER-Net observations report
- LIGO/Virgo S190727h: Upper limits from IceCube neutrino searches