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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"

19210 results found.

  1. GRB 990308a and GRB 990308b
  2. GRB990308, Possible new SGR~0209+70
  3. GRB 990123, Field Photometry
  4. GRB 990217, radio observations
  5. GRB990217: BeppoSAX/GRBM data
  6. GRB990123 observations
  7. GRB990217 Optical observation
  8. GRB 990123: Discovery of the Probable Host Galaxy
  9. GRB 990123: Reduced HST Images
  10. GRB 990123: BVRI standards in the field
  11. GRB990123, Probability of gravitational lensing
  12. GRB990123, Preliminary Lens Search Results
  13. On the Lensing Interpretation of GRB 990123
  14. Search for Potential Images of GRB 990123
  15. Search for Potential Images of GRB 990123
  16. GRB990123, Optical BVRI Observations
  17. GRB990123, OSSE observations
  18. GRB990123, ASCA X-ray observation of afterglow
  19. GRB 990123 Optical Follow-Up
  20. GRB 990123: BATSE Observations
  21. GRB990123 Optical Observations
  22. GRB 990123 Optical Follow-Up
  23. GRB990123, Optical observation
  24. GRB 990123: Optical Decay Slope
  25. GRB990123, early optical counterpart detection
  26. GRB990123 Optical Observation
  27. Possible identification of SN1999E with GRB980910
  28. GRB 981226: radio variable
  29. GRB981220
  30. GRB981220, Correction to GCN 179
  31. GRB 981220 Optical observations
  32. GRB 981220 and GRB 981226, optical observations
  33. GRB981226 Optical Observations
  34. GRB981226 BeppoSAX follow up
  35. GRB 981226 optical observations
  36. GRB981220 B, R and I band observations
  37. Optical Observations of GRB981226
  38. GRB 981226 optical observations
  39. GRB 981220
  40. GRB 981220, radio observations
  41. GRB 981220, radio observations
  42. GRB981220 I-band Observations
  43. GRB 981220: RXTE/ASM and BeppoSAX/GRBM results
  44. GRB980329 R,I flux calibration and R,I,K upper limits
  45. GRB 980923 BATSE Observations
  46. SGR1900+14, BeppoSAX-GRBM observations
  47. GRB971214, association with a Galactic star?
  48. GRB980703 - BeppoSAX/GRBM detection
  49. GRB980703 optical photometry
  50. GRB 980703: BATSE Observations
  51. GRB980703 optical observations
  52. GRB980703: Radio transient
  53. GRB 980703: Spectrum of the proposed optical counterpart
  54. GRB980613 Optical Observations
  55. GRB 980703
  56. GRB980703 (I band observations)
  57. GRB980703 (optical R observations)
  58. BeppoSAX NFI observations of GRB 980703
  59. GRB 980703: ASM Position & Intensity
  60. GRB980519 observation report
  61. GRB980703 optical followup
  62. SGR1627-41
  63. Radio observations of SGRs
  64. SGR1900+14 field optical observations
  65. GRB980613, optical observations
  66. GRB 980613: Optical transient and its host galaxy
  67. SGR1627-41, RXTE/ASM observations
  68. GRB 980613: Detection of the probable host galaxy
  69. Reduced error box of SGR 1627-41
  70. GRB 980613: BATSE Observations
  71. GRB 980613 optical observations
  72. Discovery of a new SGR source, SGR1627-41
  73. GRB 980613 optical/IR obs.
  74. GRB980613 Near Infra-Red Observations
  75. GRB971214 Secondary Standards
  76. BATSE on-board GRB trigger change
  77. GRB 980519 Optical Observations
  78. GRB980519 BATSE Observations
  79. GRB980519 Optical Observations
  80. GRB980515, BeppoSAX IAUC to be submitted
  81. GRB 980425 Radio Light Curve
  82. BSAX Observations of GRB980425 field
  83. IPN web site of GRBs
  84. GRB980425 BATSE observations
  85. GRB980425: optical obs.
  86. GRB980425: Radio Observations
  87. report on BSAX observations of GRB980425
  88. GRB 980329 ROSAT observation
  89. GRB980326, optical observations
  90. GRB980329, Fading IR counterpart to radio source
  91. GRB980329 sub-millimeter observations
  92. GRB980329 IPN annulus
  93. GRB980329 optical observations
  94. GRB980329 near-IR observations
  95. GRB980329 near-IR observations
  96. GRB980329 VLA observations
  97. GRB980329 near IR observations
  98. GRB980329 optical observations
  99. GRB980329 optical observations
  100. GRB980326 optical observations

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