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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').

552 results found.

  1. Konus-Wind observation of GRB 060904A
  2. Konus-Wind observation of GRB 060901
  3. GRB060729: analysis of XMM-Newton observation
  4. Swift detection of an outburst from the 4U 1246-58 LMXB burster
  5. Swift-BAT trigger 215279 is not a GRB
  6. GRB 060526: Refined analysis of the Swift-BAT burst
  7. GRB 060522: Swift detection of a burst with possible optical afterglow
  8. GRB 060306: Swift-BAT refined analysis
  9. Konus-Wind observation of bright hard GRB 060213
  10. GRB 060211B: Swift/BAT refined analysis
  11. GRB 060210: Refined analysis of the Swift-BAT burst
  12. GRB 060202: Refined analysis of the Swift-BAT burst
  13. Konus-Wind observation of GRB 060124
  14. GRB 060117: PROMPT Observations
  15. GRB 060108: Refined XRT analysis
  16. GRB 051221B: Optical Observations with Kuiper 1.54m
  17. GRB 051221B: Refined analysis of the Swift-BAT burst
  18. Konus-Wind observation of GRB 051028
  19. Konus-Wind observation of GRB 051022
  20. GRB 050906, summary of radio observations
  21. GRB 051001: Swift Detection of a Burst
  22. GRB050922C: optical observation
  23. GRB 050827: Swift-BAT refined analysis
  24. GRB 050730: WSRT Radio Observations
  25. GRB050801: Swift-BAT detection of a burst
  26. GRB 050509b: Swift XRT Position
  27. IBAS GRB Alerts 1978-1980
  28. GRB040903 - A XRF?
  29. IPN Summary of SGR1806-20 Activity in 2004
  30. IPN triangulation of GRB030413 (small error box)
  31. IPN triangulation of GRB021211B (two large error boxes)
  32. IPN triangulation of GRB020904
  33. IPN triangulation of GRB020715 (=GRB150702)
  34. IPN triangulation of GRB150702
  35. GRB020124 optical observations with RIBOTS/RIMOTS
  36. GRB010220, Radio and Optical Observations
  37. GRB010213 (HETE) TAROT observations
  38. GRB 001109: deep JHK upper limits
  39. GRB 000301A, Radio Observations
  40. BEPPOSAX GRBM Localization of GRB991226
  41. IPN localization of GRB991226
  42. Optical Observations of GRB990627
  43. BeppoSAX NFI Observation of GRB980425
  44. GRB980425 Optical Follow-up
  45. GRB980425: X-ray revised positions
  46. GRB970519, optical follow-up at Schmidt Calern
  47. BSAX Observations of GRB980425 field
  48. GRB980425 BATSE observations
  49. GRB 980425 optical observations
  50. GRB980425: optical obs.
  51. GRB980425: Radio Observations
  52. GRB 980425 optical observations

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