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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"

16029 results found.

  1. GRB020812(=H2257): A Long Burst Localized by HETE in Near-Real Time
  2. GRB 020715, optical observations
  3. GRB 020714, optical observations
  4. GRB020801: Imaging of Suggested OT Counterpart at the Magellan
  5. GRB020801, optical afterglow candidate
  6. GRB020331: Late-time Optical Light Curve (re-submission)
  7. GRB020331: Late-time Optical Light Curve
  8. GRB 020410: Discovery of Probable OT by HST
  9. GRB 020124, HST observations of the fading afterglow
  10. GRB 020705: Optical observations
  11. GRB 020625, optical observations
  12. GRB 020625: Optical observations
  13. GRB 020531: optical photometry of Chandra sources
  14. GRB020625 (=H2081): A Long Burst Localized by HETE
  15. HETE #2081: Optical observations
  16. The Probable Host Galaxy of GRB/XRF 020427
  17. Gemini IR Detection of AXP 1E 2259+586 Post-Burst
  18. AXP 1E2259+586: quasi-simultaneous optical observation
  19. AXP 1E2259+586 optical observations
  20. Fading Optical Source in the Field of GRB020531
  21. GRB 020531, INT+WFC deep optical upper limits
  22. GRB020405: polarimetric observations
  23. GRB 020531, simultaneous optical observations
  24. GRB 020604, optical observations
  25. GRB020604, optical observations
  26. GRB020531 Optical observations with TAROT
  27. GRB020531 Optical observations with TAROT
  28. GRB 020418, optical/near-IR observations
  29. GRB020531 Optical Observations
  30. GRB020531: Observations with the Chandra X-ray Observatory
  31. GRB 020603: Optical Observations
  32. GRB 020603: Optical observations
  33. GRB 020531 optical observations with TAROT
  34. GRB020531, optical observations
  35. GRB020531: optical observations
  36. GRB020531, optical observation
  37. GRB020531(=H2042): Optical Observations
  38. GRB020531(=H2042): Optical Observations
  39. GRB020531: Optical observations
  40. GRB020531(=H2042): A Short, Hard Burst Localized by HETE
  41. GRB 020525: Optical Observations
  42. GRB020525, optical observations
  43. HETE Observations of GX354-0 (= MXB1728-34, so-called "Slow
  44. HST detection of the likely host galaxy of GRB 020124
  45. GRB020321 : Optical observations.
  46. GRB020331: Third Epoch and Revised Second Epoch Optical
  47. GRB 020418: Optical observations
  48. GRB 020124: Optical observations
  49. GRB 020418: Optical observations
  50. GRB 020409: Optical Observations
  51. GRB 020409, 2-nd epoch optical observations at Terskol.
  52. GRB 020409: Optical observations
  53. GRB 020409, No Optical Detection to R = 22
  54. GRB 020409: No Evidence for an Optical Afterglow
  55. GRB 020409, 2nd epoch optical observations
  56. GRB 020331 Kyoto observation on March 31
  57. GRB 020409, No Optical Detection to R = 20
  58. GRB 020409: Optical observations
  59. GRB 020410, optical observations
  60. GRB 020409, optical observations
  61. GRB 020409: Optical Observations
  62. GRB020406(?), optical observations
  63. GRB020410, optical observations
  64. X-ray afterglow of GRB020321
  65. GRB020331: Confirmation of Afterglow Candidate with Magellan
  66. GRB020405: VLT optical observations and V band decay slope
  67. GRB020331 optical observations with RIMOTS
  68. GRB020124 optical observations with RIBOTS/RIMOTS
  69. GRB020331: Optical Observations of Afterglow Candidate
  70. GRB020406(?), optical observations
  71. GRB020405: VLT optical observations
  72. Revised Photometry of the Optical Afterglow of GRB 020405
  73. GRB 020331: Candidate Optical Afterglow
  74. GRB 020405: Decay index
  75. GRB020405, Radio Observations
  76. Fading Optical Afterglow and Possible Host Galaxy of GRB 020405
  77. GRB 020405, U-band observations
  78. GRB 020405: Optical afterglow candidate
  79. GRB011212: Optical Observations
  80. GRB 020331 Optical Observations
  81. GRB 020331: Optical observations
  82. GRB020331(=H1963): The "Easter" Burst Detected by HETE
  83. GRB011211: HST Observations of Optical Afterglow and Host Galaxy
  84. GRB 020322, Radio observations
  85. Near-Infrared Observations of GRB020322 at TIRGO
  86. GRB 020322: Optical Observations
  87. GRB 020321: Optical observations
  88. GRB020317 BVRI field photometry
  89. GRB011211 revised BVRI field photometry
  90. GRB020305 BVRI field photometry
  91. GRB020322 BVRI field photometry
  92. GRB 020322 optical observations
  93. GRB020322: Candidate Optical Afterglow
  94. GRB 020322 optical observation
  95. GRB 020322: Optical Sources and Improved Astrometry
  96. GRB020322, optical observations
  97. GRB 020322: Optical candidate
  98. GRB020322: Optical Observations
  99. GRB 020321: Optical observations
  100. GRB020317: optical observations

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