GRB 190829A

Follow-up, step by step

1. Evening of 29 Aug
   Fermi and Swift

   The burst is detected and localised.

2. T0 + ~4.5 h
   H.E.S.S.

   Observations start; a signal in the real-time analysis leads the crew to extend them.

3. Next morning
   H.E.S.S. transients group

   Data quality and results are checked; a GCN circular and an Astronomer's Telegram go out.

4. Following nights
   H.E.S.S.

   The region is observed for several more days.

5. June 2021
   Publications

   Science paper showing the similarity of the X-ray and very-high-energy emission.