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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"

28230 results found.

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

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