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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"

45708 results found.

  1. GRB 980613 new optical/IR observations
  2. GRB 980613 optical/IR obs.
  3. GRB980613 Near Infra-Red Observations
  4. GRB980611
  5. GRB980613, BeppoSAX WFC positions
  6. GRB971214 Secondary Standards
  7. SGR 1900+14
  8. GRB980519 Secondary Standards
  9. SGR1900+14
  10. SGR1900+14
  11. BATSE on-board GRB trigger change
  12. GRB 980519 Optical Observations
  13. GRB980519 optical observations
  14. GRB980519 I-band observations
  15. GRB 980519
  16. GRB980519 optical observations
  17. GRB 980519 Optical Observations
  18. GRB980519 BATSE Observations
  19. GRB970519, optical follow-up at Schmidt Calern
  20. GRB980519 optical observations
  21. GRB980519 Optical Observations
  22. GRB980519 Optical Observations
  23. GRB980519 IPN POSITION
  24. GRB980519 Optical Observations
  25. GRB 980519 Optical Observations
  26. GRB980519 optical observations
  27. GRB980515, BeppoSAX IAUC to be submitted
  28. BATSE on-board GRB trigger change
  29. GRB980519, BeppoSAX-WFC updated position
  30. GRB980519, BeppoSAX-WFC position
  31. GRB980515: SAX-WFC updated position
  32. BeppoSAX GRB ALERT: updated position of grb980515
  33. GRB 980425 Radio Light Curve
  34. GRB 980425 Brightness Temperature
  35. BSAX Observations of GRB980425 field
  36. IPN web site of GRBs
  37. GRB980425 BATSE observations
  38. SAX J0840.7+2248 Optical Observations
  39. GRB 980425 optical observations
  40. GRB980425: optical obs.
  41. GRB980425: Radio Observations
  42. GRB 980425 optical observations
  43. report on BSAX observations of GRB980425
  44. GRB 980425 optical observations
  45. GRB 980329 ROSAT observation
  46. GRB980326 X-ray Observations
  47. GRB980326, optical observations
  48. GRB980326, optical observations
  49. GRB980329, Fading IR counterpart to radio source
  50. GRByymmdd, Announcement of automation
  51. GRB980326 IPN annulus
  52. GRB980329
  53. GRB980329 Keck K-band observations
  54. GRB980329 sub-millimeter observations
  55. GRB980329 IPN annulus
  56. GRB980329 optical observations
  57. GRB980329 near-IR observations
  58. GRB980329 near-IR observations
  59. GRB980329 optical observations
  60. GRB980329 infrared observations
  61. GRB980329 optical observations
  62. GRB980326 optical observations
  63. GRB980329 optical observations
  64. GRB980329 VLA observations
  65. GRB980329 near IR observations
  66. GRB980329 optical observations
  67. GRB980329 optical observations
  68. GRB980329 optical observations
  69. GRB980326 optical observations
  70. GRB980326 optical observations
  71. GRB980326 optical observations
  72. GRB980326 optical observations
  73. GRB970508 SAO RAS optical observations
  74. Optical Observations of GRB 970508
  75. GRB 971214: Redshift from Keck Observations
  76. Near-IR follow-up on GRB 971227
  77. GRB971214: Keck R & I-band Observations
  78. GRB 971227: Optical Observations
  79. Optical Observations of the GRB 971227 field
  80. Optical Observations on GRB 971227
  81. GRB971227: Plaskett R-band observations
  82. GRB 971227: Optical clarifications
  83. Optical Observations for GRB 971227
  84. GRB971227: Further CAHA R-band images
  85. GRB971227: LOTIS observations
  86. GRB 971227: CAHA R-band images
  87. GRB 971227: Optical observations
  88. GRB971214: Optical Observations and Calibrations
  89. Sub-millimeter Observations of GRB 971214 at the JCMT
  90. GRB 971214: EUVE Observations
  91. GRB 971214: Redshift from Keck Optical Observations
  92. GRB 971214: Redshift from Keck Optical Observations
  93. GRB 971214: Apache Point Observatory Optical Observations
  94. GRB 971214: KPNO Optical Observations
  95. Optical Observations of GRB 971214 at Keck
  96. GRB 971214: Optical Observations
  97. Radio Observations of GRB 971214 at the VLA
  98. GRB 971214: USNOFS Observations Summary
  99. GRB 971024: KPNO Optical Observations Summary
  100. GRB 971024: Refined analysis by USNOFS Observations

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