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').
16 results found.
- LIGO/Virgo S190701ah: No counterpart candidates in Fermi-LAT observations
- LIGO/Virgo S190701ah: GRAWITA VST-ESO PARANAL observations
- LIGO/Virgo S190701ah: Updated sky localization
- LIGO/Virgo S190701ah: KMTNet Observation
- LIGO/Virgo S190701ah: No transient candidates from CALET observations
- LIGO/Virgo S190701ah: Upper limits from Insight-HXMT/HE observations
- LIGO/Virgo S190701ah: No counterpart candidates in the Swift/BAT Observations
- LIGO/Virgo S190701ah: Upper limits from AGILE-GRID observations
- LIGO/Virgo S190701ah: Upper limits from Fermi-GBM Observations
- LIGO/Virgo S190701ah Global MASTER-Net observations report
- LIGO/Virgo S190701ah: Coverage and upper limits from MAXI/GSC observations
- LIGO/Virgo S190701ah: No counterpart candidates in AGILE-MCAL observations
- LIGO/Virgo S190701ah: No neutrino counterpart candidates in ANTARES search
- LIGO/Virgo S190701ah: No counterpart candidates in INTEGRAL SPI-ACS prompt observation
- LIGO/Virgo S190701ah: Identification of a GW compact binary merger candidate
- LIGO/Virgo S190701ah: Upper limits from IceCube neutrino searches