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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"

37679 results found.

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

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