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GCN Circulars

GCN Circulars are rapid bulletins submitted by and distributed to the community. 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').
Advanced Search

To narrow the search results, use advanced search syntax. This allows for specifying which circular field to search (submitter, subject, and/or body). For additional information, refer to the advanced search documentation.

Advanced Search Examples (click to copy):

subject:"Swift"
body:"GRB"
submitter:"Judith Racusin"

15359 results found.

  1. GRB970508 optical observations
  2. GRB980703, Host galaxy multicolor photometry
  3. GRB980703 - BeppoSAX/GRBM detection
  4. GRB980703 optical photometry
  5. GRB980703 optical observations
  6. GRB980703: Radio transient
  7. GRB980703 H-band Observations
  8. GRB980703 Transient Optical Follow-Up
  9. GRB980703: LOTIS observation at early times
  10. GRB 980703: ASM Position & Intensity
  11. SGR1627-41
  12. GRB 980613 Near-IR observations
  13. GRB980613, optical observations
  14. SGR1627-41, RXTE/ASM observations
  15. GRB 980613: Detection of the probable host galaxy
  16. Reduced error box of SGR 1627-41
  17. SGR1627-41, BeppoSAX-GRBM detections
  18. GRB 980613 Optical Observations
  19. GRB 980613 optical observations
  20. Discovery of a new SGR source, SGR1627-41
  21. GRB980613 observations from Palomar
  22. GRB 980613 new optical/IR observations
  23. SGR 1900+14
  24. BATSE on-board GRB trigger change
  25. GRB 980519 Optical Observations
  26. GRB980519 optical observations
  27. GRB980519 I-band observations
  28. GRB970519, optical follow-up at Schmidt Calern
  29. GRB980519 optical observations
  30. GRB980519 Optical Observations
  31. GRB980519 IPN POSITION
  32. GRB980515, BeppoSAX IAUC to be submitted
  33. BATSE on-board GRB trigger change
  34. GRB 980425 Brightness Temperature
  35. BSAX Observations of GRB980425 field
  36. GRB980425 BATSE observations
  37. GRB980425: optical obs.
  38. GRB980326, optical observations
  39. GRB980329, Fading IR counterpart to radio source
  40. GRB980329 Keck K-band observations
  41. GRB980329 optical observations
  42. GRB980329 near-IR observations
  43. GRB980329 infrared observations
  44. GRB980329 optical observations
  45. GRB980329 near IR observations
  46. GRB980326 optical observations
  47. Optical Observations of GRB 970508
  48. GRB 971214: Redshift from Keck Observations
  49. GRB971227: Plaskett R-band observations
  50. GRB 971227: Optical clarifications
  51. GRB971214: Optical Observations and Calibrations
  52. GRB 971214: Apache Point Observatory Optical Observations
  53. GRB 971214: KPNO Optical Observations
  54. Optical Observations of GRB 971214 at Keck
  55. GRB 971214: Optical Observations
  56. Radio Observations of GRB 971214 at the VLA
  57. GRB 971024: KPNO Optical Observations
  58. GRB 970828: Palomar Observations
  59. GRB 970228: Keck/LRIS Optical Observations

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