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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"

28229 results found.

  1. Search for Potential Images of GRB 990123
  2. GRB990123, Optical BVRI Observations
  3. GRB 990123: near-infrared observations.
  4. GRB990123, OSSE observations
  5. GRB990123: NIR Observation
  6. GRB990123, ASCA X-ray observation of afterglow
  7. "GRB 990123: New BV Observations"
  8. GRB 990123 Optical Follow-Up
  9. GRB 990123: BATSE Observations
  10. GRB990123 Optical Observations
  11. GRB 990123: New Optical Observations, Decay Measure
  12. GRB 990123 Optical Follow-Up
  13. GRB 990123: Possible Gravitationally Lensed Burst?
  14. GRB990123, optical observation
  15. GRB 990123: Pre-Burst Detection of an Apparent Host Galaxy
  16. GRB990123, Optical observation
  17. GRB 990123: Optical Decay Slope
  18. GRB 990123 r-band photometry
  19. GRB 990123 Optical Follow-up
  20. GRB990123, early optical counterpart detection
  21. GRB990123 Optical Observation
  22. Possible identification of SN1999E with GRB980910
  23. Optical Observations of GRB 981220
  24. GRB 981226: radio variable
  25. GRB981220
  26. GRB981220, Correction to GCN 179
  27. GRB 981220 Optical observations
  28. GRB 981226 Optical Observations
  29. GRB 981220 and GRB 981226, optical observations
  30. GRB981226 Optical Observations
  31. GRB981226 BeppoSAX follow up
  32. GRB 981226
  33. GRB 981226 optical observations
  34. GRB981220 B, R and I band observations
  35. Optical Observations of GRB981226
  36. GRB 981220:Optical Observations
  37. GRB 981226 optical observations
  38. GRB 981220
  39. GRB 981220, radio observations
  40. GRB981220 I-band Observations
  41. GRB 981220
  42. GRB 980326/Host Galaxy
  43. GRB 981220: RXTE/ASM and BeppoSAX/GRBM results
  44. BeppoSAX NFI Observation of GRB980425
  45. GRB980329 R,I flux calibration and R,I,K upper limits
  46. GRB980425 Optical Follow-up
  47. GRB 980923 BATSE Observations
  48. SGR1900+14, BeppoSAX-GRBM observations
  49. GRB970508 optical observations
  50. GRB971214, association with a Galactic star?
  51. GRB980519, Optical Observations
  52. GRB980703 - BeppoSAX/GRBM detection
  53. GRB980703 optical photometry
  54. GRB 980703: BATSE Observations
  55. GRB980703 optical observations
  56. GRB980703: Radio transient
  57. GRB 980703: Spectrum of the proposed optical counterpart
  58. GRB980703 Transient Optical Follow-Up
  59. GRB980703: LOTIS observation at early times
  60. GRB980613 Optical Observations
  61. GRB980703 (I band observations)
  62. BeppoSAX NFI observations of GRB 980703
  63. GRB980519 observation report
  64. GRB980703 optical followup
  65. Radio observations of SGRs
  66. SGR1900+14 field optical observations
  67. GRB980613, optical observations
  68. GRB 980613: Optical transient and its host galaxy
  69. SGR1627-41, RXTE/ASM observations
  70. GRB 980613: Detection of the probable host galaxy
  71. Reduced error box of SGR 1627-41
  72. GRB 980613: BATSE Observations
  73. GRB 980613 Optical Observations
  74. GRB 980613 optical observations
  75. Discovery of a new SGR source, SGR1627-41
  76. GRB980613 Optical Observations
  77. GRB980613 observations from Palomar
  78. GRB 980613 optical/IR obs.
  79. GRB980613 Near Infra-Red Observations
  80. GRB971214 Secondary Standards
  81. GRB980519 Secondary Standards
  82. BATSE on-board GRB trigger change
  83. GRB 980519 Optical Observations
  84. GRB 980519
  85. GRB980519 optical observations
  86. GRB 980519 Optical Observations
  87. GRB980519 BATSE Observations
  88. GRB980519 Optical Observations
  89. GRB980519 Optical Observations
  90. GRB 980519 Optical Observations
  91. GRB980515, BeppoSAX IAUC to be submitted
  92. BSAX Observations of GRB980425 field
  93. IPN web site of GRBs
  94. GRB980425 BATSE observations
  95. SAX J0840.7+2248 Optical Observations
  96. GRB980425: optical obs.
  97. GRB980425: Radio Observations
  98. report on BSAX observations of GRB980425
  99. GRB 980329 ROSAT observation
  100. GRB980326 X-ray Observations

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