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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"

22201 results found.

  1. SGR1900+14 field optical observations
  2. GRB 980613 Near-IR observations
  3. GRB980613, optical observations
  4. SGR1627-41, RXTE/ASM observations
  5. GRB 980613: Detection of the probable host galaxy
  6. Reduced error box of SGR 1627-41
  7. GRB 980613: BATSE Observations
  8. GRB 980613 Optical Observations
  9. GRB 980613 optical observations
  10. Discovery of a new SGR source, SGR1627-41
  11. GRB980613 Optical Observations
  12. GRB980613 observations from Palomar
  13. GRB 980613 new optical/IR observations
  14. GRB 980613 optical/IR obs.
  15. GRB980613 Near Infra-Red Observations
  16. GRB971214 Secondary Standards
  17. SGR 1900+14
  18. GRB980519 Secondary Standards
  19. SGR1900+14
  20. SGR1900+14
  21. GRB 980519 Optical Observations
  22. GRB980519 optical observations
  23. GRB980519 I-band observations
  24. GRB 980519
  25. GRB980519 optical observations
  26. GRB 980519 Optical Observations
  27. GRB980519 BATSE Observations
  28. GRB980519 optical observations
  29. GRB980519 Optical Observations
  30. GRB980519 Optical Observations
  31. GRB980519 Optical Observations
  32. GRB 980519 Optical Observations
  33. GRB980519 optical observations
  34. GRB 980425 Brightness Temperature
  35. BSAX Observations of GRB980425 field
  36. GRB980425 BATSE observations
  37. SAX J0840.7+2248 Optical Observations
  38. GRB 980425 optical observations
  39. GRB980425: optical obs.
  40. GRB980425: Radio Observations
  41. GRB 980425 optical observations
  42. report on BSAX observations of GRB980425
  43. GRB 980425 optical observations
  44. GRB980326 X-ray Observations
  45. GRB980326, optical observations
  46. GRB980326, optical observations
  47. GRB980329, Fading IR counterpart to radio source
  48. GRByymmdd, Announcement of automation
  49. GRB980329
  50. GRB980329 Keck K-band observations
  51. GRB980329 sub-millimeter observations
  52. GRB980329 optical observations
  53. GRB980329 near-IR observations
  54. GRB980329 near-IR observations
  55. GRB980329 optical observations
  56. GRB980329 infrared observations
  57. GRB980329 optical observations
  58. GRB980326 optical observations
  59. GRB980329 optical observations
  60. GRB980329 VLA observations
  61. GRB980329 near IR observations
  62. GRB980329 optical observations
  63. GRB980329 optical observations
  64. GRB980329 optical observations
  65. GRB980326 optical observations
  66. GRB980326 optical observations
  67. GRB980326 optical observations
  68. GRB980326 optical observations
  69. GRB970508 SAO RAS optical observations
  70. Optical Observations of GRB 970508
  71. GRB 971214: Redshift from Keck Observations
  72. Near-IR follow-up on GRB 971227
  73. GRB971214: Keck R & I-band Observations
  74. GRB 971227: Optical Observations
  75. Optical Observations of the GRB 971227 field
  76. Optical Observations on GRB 971227
  77. GRB971227: Plaskett R-band observations
  78. Optical Observations for GRB 971227
  79. GRB971227: Further CAHA R-band images
  80. GRB971227: LOTIS observations
  81. GRB 971227: CAHA R-band images
  82. GRB 971227: Optical observations
  83. GRB971214: Optical Observations and Calibrations
  84. Sub-millimeter Observations of GRB 971214 at the JCMT
  85. GRB 971214: EUVE Observations
  86. GRB 971214: Redshift from Keck Optical Observations
  87. GRB 971214: Redshift from Keck Optical Observations
  88. GRB 971214: Apache Point Observatory Optical Observations
  89. GRB 971214: KPNO Optical Observations
  90. Optical Observations of GRB 971214 at Keck
  91. GRB 971214: Optical Observations
  92. Radio Observations of GRB 971214 at the VLA
  93. GRB 971214: USNOFS Observations Summary
  94. GRB 971024: KPNO Optical Observations Summary
  95. GRB 971024: Refined analysis by USNOFS Observations
  96. GRB 971024: KPNO Optical Observations
  97. GRB 971024: USNO Observations
  98. Possible new SGR from US Naval Observatory
  99. RXTE Observations of SGR 1814-13
  100. GRB 970828: Palomar Observations

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