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.
- LIGO/Virgo S190412m: Further J-GEM optical/NIR observations
- LIGO/Virgo S190412m: SVOM/GWAC observations of the initial skymap
- LIGO/Virgo S190412m: TAROT-GRANDMA observation report.
- LIGO/Virgo S190412m: Palomar Gattini-IR Wide-field Infrared Follow-up
- LIGO/Virgo S190412m: GOTO optical coverage - no notable counterparts
- LIGO/Virgo S190412m: Fermi-LAT search for a high-energy gamma-ray counterpart
- LIGO/Virgo S190412m: Swift/BAT data search
- LIGO/Virgo S190412m: J-GEM optical/NIR follow-up observations
- LIGO/Virgo S190412m: Fermi-GBM Observations
- LIGO/Virgo S190412m: MAXI/GSC Observations
- LIGO-Virgo S190412m: AGILE GRID observations
- LIGO/Virgo S190412m: Insight-HXMT/HE observation
- LIGO/Virgo S190408an: ATLAS observations of the S190412m skymap
- LIGO/Virgo S190412m/G329483: ANTARES neutrino search
- LIGO/Virgo S190412m: Hobby-Eberly Telescope VIRUS observations of target galaxies.
- LIGO-Virgo S190412m: Search for neutrino counterparts with IceCube
- LIGO/Virgo S190412m: HAWC follow-up
- INTEGRAL prompt observation of S190412m
- LIGO-Virgo S190412m: AGILE preliminary analysis
- LIGO/Virgo S190412m: MASTER early alert observation
- LIGO/Virgo S190412m: Identification of a GW binary merger candidate