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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"

26553 results found.

  1. GRB 990123: Possible Gravitationally Lensed Burst?
  2. GRB990123, optical observation
  3. GRB 990123 radio observations
  4. GRB990123, Optical observation
  5. GRB 990123: Optical Decay Slope
  6. GRB 990123 r-band photometry
  7. GRB 990123 Optical Follow-up
  8. GRB990123, early optical counterpart detection
  9. GRB990123 Optical Observation
  10. GRB 990123: Bright New Source, Possible Optical Transient
  11. GRB990123, BeppoSAX WFC detection and NFI planned follow-up
  12. SN 1999E & GRB 980919
  13. Possible identification of SN1999E with GRB980910
  14. Optical Observations of GRB 981220
  15. GRB981220
  16. GRB981220, Correction to GCN 179
  17. GRB 981220 Optical observations
  18. GRB 981226 Optical Observations
  19. GRB 980613: Spectroscopy of the host galaxy
  20. GRB981226, sub-millimeter observations
  21. GRB 981220 and GRB 981226, optical observations
  22. GRB981226 Optical Observations
  23. GRB981226 BeppoSAX follow up
  24. GRB 981226 radio observations
  25. GRB 981226
  26. GRB 981226 optical observations
  27. radio observations of GRB 981226
  28. GRB981220 B, R and I band observations
  29. Optical Observations of GRB981226
  30. GRB981226, BeppoSAX Christmas GRB
  31. GRB 981226 - Infrared Observations
  32. GRB 981220
  33. GRB 981220, radio observations
  34. GRB981226 Optical Observation
  35. GRB981220 I-band Observations
  36. GRB981220 Optical Observations
  37. GRB 981220
  38. GRB 981220, optical observations
  39. GRB 980326/Host Galaxy
  40. GRB981220 IPN error box
  41. GRB 981220: RXTE/ASM and BeppoSAX/GRBM results
  42. BeppoSAX NFI Observation of GRB980425
  43. GRB980329 R,I flux calibration and R,I,K upper limits
  44. GRB980425: X-ray revised positions
  45. GRB 980923 BATSE Observations
  46. SGR1900+14, BeppoSAX-GRBM observations
  47. GRB980703 Very Long Baseline Interferometry
  48. GRB970508 optical observations
  49. GRB971214, association with a Galactic star?
  50. Optical Observations of the Host Galaxy of GRB 980519
  51. GRB980519, Optical Observations
  52. GRB 980703 (NFI observations)
  53. GRB980703 optical photometry
  54. GRB 980703: BATSE Observations
  55. GRB980703 optical observations
  56. GRB980703: Radio transient
  57. GRB980703 H-band Observations
  58. GRB 980703: Spectrum of the proposed optical counterpart
  59. GRB980703: Spectrum of the proposed optical counterpart
  60. GRB980703 Transient Optical Follow-Up
  61. GRB980703: LOTIS observation at early times
  62. GRB980613 Optical Observations
  63. GRB980703 (I band observations)
  64. GRB 980703 H-band Observations
  65. GRB980703 (optical R observations)
  66. GRB980703: radio source/optical transient
  67. Radio observations of SGRs
  68. SGR1900+14 field optical observations
  69. GRB 980613 Near-IR observations
  70. GRB980613, optical observations
  71. GRB 980613: Optical transient and its host galaxy
  72. GRB 980613: Detection of the probable host galaxy
  73. GRB 980613: BATSE Observations
  74. SGR1627-41, BeppoSAX-GRBM detections
  75. SGR 1627-41
  76. GRB 980613 optical observations
  77. GRB980613 Optical Observations
  78. GRB980613 observations from Palomar
  79. GRB980613 BeppoSAX-NFI follow up
  80. GRB 980613 new optical/IR observations
  81. GRB 980613 optical/IR obs.
  82. GRB980611
  83. GRB980613, BeppoSAX WFC positions
  84. GRB971214 Secondary Standards
  85. SGR 1900+14
  86. GRB980519 Secondary Standards
  87. SGR1900+14
  88. GRB 980519 Optical Observations
  89. GRB980519 optical observations
  90. GRB980519 I-band observations
  91. GRB 980519
  92. GRB980519 optical observations
  93. GRB980519 BATSE Observations
  94. GRB970519, optical follow-up at Schmidt Calern
  95. GRB980519 optical observations
  96. GRB980519 Optical Observations
  97. GRB980519 Optical Observations
  98. GRB980519 IPN POSITION
  99. GRB980519 Optical Observations
  100. GRB 980519 Optical Observations

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