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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"

35997 results found.

  1. GRB980703 optical followup
  2. GRB 980613 Near-IR observations
  3. GRB980613, optical observations
  4. GRB 980613: Optical transient and its host galaxy
  5. GRB 980613: Detection of the probable host galaxy
  6. GRB 980613: BATSE Observations
  7. GRB 980613 Optical Observations
  8. GRB 980613 optical observations
  9. GRB980613 Optical Observations
  10. GRB980613 observations from Palomar
  11. GRB980613 BeppoSAX-NFI follow up
  12. GRB 980613 new optical/IR observations
  13. GRB 980613 optical/IR obs.
  14. GRB980613 Near Infra-Red Observations
  15. GRB980611
  16. GRB980613, BeppoSAX WFC positions
  17. GRB971214 Secondary Standards
  18. GRB980519 Secondary Standards
  19. BATSE on-board GRB trigger change
  20. GRB 980519 Optical Observations
  21. GRB980519 optical observations
  22. GRB 980519
  23. GRB980519 optical observations
  24. GRB 980519 Optical Observations
  25. GRB980519 BATSE Observations
  26. GRB970519, optical follow-up at Schmidt Calern
  27. GRB980519 optical observations
  28. GRB980519 Optical Observations
  29. GRB980519 Optical Observations
  30. GRB980519 IPN POSITION
  31. GRB980519 Optical Observations
  32. GRB 980519 Optical Observations
  33. GRB980519 optical observations
  34. GRB980515, BeppoSAX IAUC to be submitted
  35. BATSE on-board GRB trigger change
  36. BeppoSAX GRB ALERT: updated position of grb980515
  37. GRB 980425 Radio Light Curve
  38. GRB 980425 Brightness Temperature
  39. GRB980425 BATSE observations
  40. SAX J0840.7+2248 Optical Observations
  41. GRB 980425 optical observations
  42. GRB980425: optical obs.
  43. GRB980425: Radio Observations
  44. GRB 980425 optical observations
  45. GRB 980425 optical observations
  46. GRB 980329 ROSAT observation
  47. GRB980326 X-ray Observations
  48. GRB980326, optical observations
  49. GRB980326, optical observations
  50. GRB980329, Fading IR counterpart to radio source
  51. GRByymmdd, Announcement of automation
  52. GRB980326 IPN annulus
  53. GRB980329 sub-millimeter observations
  54. GRB980329 IPN annulus
  55. GRB980329 near-IR observations
  56. GRB980326 optical observations
  57. GRB980329 optical observations
  58. GRB980329 VLA observations
  59. GRB980329 near IR observations
  60. GRB980329 optical observations
  61. GRB980329 optical observations
  62. GRB980326 optical observations
  63. GRB980326 optical observations
  64. GRB970508 SAO RAS optical observations
  65. Optical Observations of GRB 970508
  66. GRB 971214: Redshift from Keck Observations
  67. Near-IR follow-up on GRB 971227
  68. GRB971214: Keck R & I-band Observations
  69. GRB 971227: Optical Observations
  70. Optical Observations of the GRB 971227 field
  71. Optical Observations on GRB 971227
  72. GRB971227: Plaskett R-band observations
  73. GRB 971227: Optical clarifications
  74. Optical Observations for GRB 971227
  75. GRB971227: Further CAHA R-band images
  76. GRB971227: LOTIS observations
  77. GRB 971227: CAHA R-band images
  78. GRB 971227: Optical observations
  79. Sub-millimeter Observations of GRB 971214 at the JCMT
  80. GRB 971214: EUVE Observations
  81. GRB 971214: Redshift from Keck Optical Observations
  82. GRB 971214: Redshift from Keck Optical Observations
  83. GRB 971214: Apache Point Observatory Optical Observations
  84. GRB 971214: KPNO Optical Observations
  85. Optical Observations of GRB 971214 at Keck
  86. GRB 971214: Optical Observations
  87. Radio Observations of GRB 971214 at the VLA
  88. GRB 971214: USNOFS Observations Summary
  89. GRB 971024: KPNO Optical Observations Summary
  90. GRB 971024: Refined analysis by USNOFS Observations
  91. GRB 971024: KPNO Optical Observations
  92. GRB 971024: USNO Observations
  93. GRB 970925: BATSE Localization
  94. IRAS 18119-1342 and the possible new SGR
  95. Possible new SGR from US Naval Observatory
  96. GRB 970828: Palomar Observations
  97. GRB 970228: Keck/LRIS Optical Observations

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