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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').

22279 results found.

  1. GRB980519, Optical Observations
  2. GRB980703 - BeppoSAX/GRBM detection
  3. GRB980703 optical photometry
  4. GRB 980703: BATSE Observations
  5. GRB980703 optical observations
  6. GRB980703: Radio transient
  7. GRB 980703: Spectrum of the proposed optical counterpart
  8. GRB980703 Transient Optical Follow-Up
  9. GRB980703: LOTIS observation at early times
  10. GRB980613 Optical Observations
  11. GRB980703 (I band observations)
  12. BeppoSAX NFI observations of GRB 980703
  13. GRB980519 observation report
  14. GRB980703 optical followup
  15. Radio observations of SGRs
  16. SGR1900+14 field optical observations
  17. GRB980613, optical observations
  18. GRB 980613: Optical transient and its host galaxy
  19. SGR1627-41, RXTE/ASM observations
  20. GRB 980613: Detection of the probable host galaxy
  21. Reduced error box of SGR 1627-41
  22. GRB 980613: BATSE Observations
  23. GRB 980613 Optical Observations
  24. GRB 980613 optical observations
  25. Discovery of a new SGR source, SGR1627-41
  26. GRB980613 Optical Observations
  27. GRB980613 observations from Palomar
  28. GRB 980613 optical/IR obs.
  29. GRB980613 Near Infra-Red Observations
  30. GRB971214 Secondary Standards
  31. GRB980519 Secondary Standards
  32. BATSE on-board GRB trigger change
  33. GRB 980519 Optical Observations
  34. GRB 980519
  35. GRB980519 optical observations
  36. GRB 980519 Optical Observations
  37. GRB980519 BATSE Observations
  38. GRB980519 Optical Observations
  39. GRB980519 Optical Observations
  40. GRB 980519 Optical Observations
  41. GRB980515, BeppoSAX IAUC to be submitted
  42. BSAX Observations of GRB980425 field
  43. IPN web site of GRBs
  44. GRB980425 BATSE observations
  45. SAX J0840.7+2248 Optical Observations
  46. GRB980425: optical obs.
  47. GRB980425: Radio Observations
  48. report on BSAX observations of GRB980425
  49. GRB 980329 ROSAT observation
  50. GRB980326 X-ray Observations
  51. GRB980326, optical observations
  52. GRB980326, optical observations
  53. GRB980329, Fading IR counterpart to radio source
  54. GRB980329 Keck K-band observations
  55. GRB980329 sub-millimeter observations
  56. GRB980329 optical observations
  57. GRB980329 near-IR observations
  58. GRB980329 near-IR observations
  59. GRB980326 optical observations
  60. GRB980329 optical observations
  61. GRB980329 VLA observations
  62. GRB980329 optical observations
  63. GRB980329 optical observations
  64. GRB980326 optical observations
  65. GRB980326 optical observations
  66. Untitled
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  68. Untitled
  69. Untitled
  70. Untitled
  71. Untitled
  72. Untitled
  73. Untitled
  74. Untitled
  75. GRB 971214: Optical Observations
  76. Radio Observations of GRB 971214 at the VLA
  77. Untitled
  78. GRB 971024: KPNO Optical Observations
  79. GRB 970828: Palomar Observations

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