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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"

45676 results found.

  1. GRB 980425 Radio Light Curve
  2. GRB 980425 Brightness Temperature
  3. BSAX Observations of GRB980425 field
  4. IPN web site of GRBs
  5. GRB980425 BATSE observations
  6. SAX J0840.7+2248 Optical Observations
  7. GRB 980425 optical observations
  8. GRB980425: optical obs.
  9. GRB980425: Radio Observations
  10. GRB 980425 optical observations
  11. report on BSAX observations of GRB980425
  12. GRB 980425 optical observations
  13. GRB 980329 ROSAT observation
  14. GRB980326 X-ray Observations
  15. GRB980326, optical observations
  16. GRB980326, optical observations
  17. GRB980329, Fading IR counterpart to radio source
  18. GRByymmdd, Announcement of automation
  19. GRB980326 IPN annulus
  20. GRB980329
  21. GRB980329 Keck K-band observations
  22. GRB980329 sub-millimeter observations
  23. GRB980329 IPN annulus
  24. GRB980329 optical observations
  25. GRB980329 near-IR observations
  26. GRB980329 near-IR observations
  27. GRB980329 optical observations
  28. GRB980329 infrared observations
  29. GRB980329 optical observations
  30. GRB980326 optical observations
  31. GRB980329 optical observations
  32. GRB980329 VLA observations
  33. GRB980329 near IR observations
  34. GRB980329 optical observations
  35. GRB980329 optical observations
  36. GRB980329 optical observations
  37. GRB980326 optical observations
  38. GRB980326 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. GRB971214: Optical Observations and Calibrations
  57. Sub-millimeter Observations of GRB 971214 at the JCMT
  58. GRB 971214: EUVE Observations
  59. GRB 971214: Redshift from Keck Optical Observations
  60. GRB 971214: Redshift from Keck Optical Observations
  61. GRB 971214: Apache Point Observatory Optical Observations
  62. GRB 971214: KPNO Optical Observations
  63. Optical Observations of GRB 971214 at Keck
  64. GRB 971214: Optical Observations
  65. Radio Observations of GRB 971214 at the VLA
  66. GRB 971214: USNOFS Observations Summary
  67. GRB 971024: KPNO Optical Observations Summary
  68. GRB 971024: Refined analysis by USNOFS Observations
  69. GRB 971024: KPNO Optical Observations
  70. GRB 971024: USNO Observations
  71. GRB 970925: BATSE Localization
  72. IRAS 18119-1342 and the possible new SGR
  73. Possible new SGR from US Naval Observatory
  74. RXTE Observations of SGR 1814-13
  75. GRB 970828: Palomar Observations
  76. GRB 970228: Keck/LRIS Optical Observations

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