ICRANet 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.

1. GRB 240825A: The nature of the afterglow motivates the search of the associated supernova
2. transient AT2023sva: A Binary Driven Hypernova with a possible associated supernova
3. GRB 230430A: A short GRB from a neutron star merger
4. GRB 221009A: Determination of the black holes mass and spin
5. GRB 221009A: Peak luminosity of the supernova vs. synchrotron afterglow
6. GRB 221009A X-ray light-curve and the indication of TeV light-curve
7. GRB 221009A: A type I BdHN of exceptional energetics
8. GRB 220527A: A BdHN I with a clear UPE phase
9. GRB 220101A: The first example of a Petanova
10. GRB 220101A: The most powerful GRB and BDHN I in 26 years
11. GRB 211023A: A BdHN of type I
12. GRB 210411C: A very significant early X-ray afterglow
13. GRB 210410A: A twin of short GRB 090510 with complementary observations
14. GRB 210210A as a BdHN II
15. GRB 190114C: A type 1 BdHN with TeV emission
16. GRB 180728A: A long GRB of the X-ray flash (XRF) subclass, expecting supernova appearance
17. GRB 180720B: Testing the universality of the newly born neutron star in BdHNe
18. GRB 160303A: LCOGT-FTN optical observations
19. GRB 160104A: LCOGT-FTN afterglow candidate
20. GRB 151114A: LCOGT-FTS afterglow observations
21. GRB 151111A: LCOGT-FTS afterglow observations
22. GRB 151029A: LCOGT-FTS afterglow observations
23. GRB 151027B: LCOGT FTN afterglow observations
24. GRB 151027A: LCOGT-McDonald afterglow observations
25. GRB 131024C: ICSP discovery of a burst in X-rays by balloon borne study
26. GRB 130702A in the Ep,i - Eiso plane
27. Redshift of GRB 110402A theoretically estimated (revised)
28. Redshift of GRB 110402A theoretically estimated
29. Request for Supernova related data for GRB 101023A