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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"

37674 results found.

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

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