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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.

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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').
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10927 results found.

  1. GRB020531(=H2042): Optical Observations
  2. IPN triangulation of the short, hard GRB020531 (=H2042)
  3. GRB020531(=H2042): Optical Observations
  4. GRB020531(=H2042): A Short, Hard Burst Localized by HETE
  5. HETE Observations of GX354-0 (= MXB1728-34, so-called "Slow
  6. GRB020405 field photometry at ESO
  7. GRB020331: Third Epoch and Revised Second Epoch Optical
  8. GRB020405: VLT observations of the OT environment
  9. GRB 020409: Optical Observations
  10. X-ray afterglow of GRB020321
  11. GRB020331: Confirmation of Afterglow Candidate with Magellan
  12. GRB020405: VLT optical observations and V band decay slope
  13. GRB020331 optical observations with RIMOTS
  14. GRB020124 optical observations with RIBOTS/RIMOTS
  15. GRB 020405: Moderate-resolution spectroscopy
  16. GRB020331: Optical Observations of Afterglow Candidate
  17. GRB020405: VLT optical observations
  18. GRB020405: VLT spectroscopy
  19. V band observations of GRB020405
  20. GRB011212: Optical Observations
  21. GRB020331(=H1963): The "Easter" Burst Detected by HETE
  22. Near-Infrared Observations of GRB020322 at TIRGO
  23. GRB 020322: Optical Sources and Improved Astrometry
  24. GRB 020322: Optical candidate
  25. XMM-Newton observation of GRB020322
  26. GRB 020317 : KISO Optical Observations
  27. GRB020317 (=H1959): Localization by HETE of a Low Fluence GRB
  28. GRB011130 (XRF011130) Second Epoch Chandra Observations
  29. GRB020305: Subaru Optical Observations
  30. IPN triangulation of GRB020305 (HETE 1939)
  31. GRB020305 (=H1939): Localization of a GRB by HETE
  32. IPN/HETE Detection of Bursts from SGR1900+14
  33. IPN Upper Limits to a GRB Associated With SN2002ap
  34. IPN triangulation of GRB020127 (=H1902)
  35. GRB020127(=H1902): Localization of a Double-Peaked GRB by HETE
  36. IPN triangulation of GRB020124 (HETE 1896)
  37. GRB020124(=H1896): Localization of a Long GRB by HETE
  38. GRB011212, Optical Observations
  39. Optical polarization observations for GRB011211
  40. Color indices of the afterglow of GRB011211
  41. GRB011212: Optical observations at Gunma
  42. GRB 011130: Optical Observations of X-ray and Radio Sources
  43. GRB 011211: TNG Spectroscopic Observations
  44. GRB011212 (=H10001): An X-Ray Rich GRB Detected by HETE
  45. XMM-Newton observation of GRB011211
  46. GRB011130 (=XRF011130): Further analysis of Chandra Target of
  47. GRB 011130: Optical Observations of Chandra Sources
  48. GRB 011130: Optical Observations of Chandra sources
  49. GRB011130 (XRF011130) Chandra Observations
  50. GRB011130 (=XRF011130): Scheduled Target of Opportunity
  51. GRB011130 (=XRF011130): Second Revised Localization by HETE
  52. GRB 011130 I-band Observation
  53. GRB011130 (=XRF011130): Revised Localization of an X-ray
  54. GRB 011121
  55. GRB011130 (=H1864): An X-Ray Rich GRB Detected by HETE
  56. GRB 011121: NIR observations, host galaxy?
  57. GRB 011030: TNG K-band observation
  58. XRF011030: J and K band observations
  59. GRB 011030: K-band observations
  60. GRB 011030 I-band Observation
  61. GRB011019: Subaru Optical Observations
  62. GRB 011030 I-band Observations
  63. GRB 011030 K-band Observations
  64. GRB010921, optical observations
  65. GRB011019: A Faint, X-ray Rich GRB localized by HETE
  66. GRB010928(=H1770): Localization of a Long GRB by HETE
  67. GRB010923(=H1764): A Short Duration GRB Detected by HETE
  68. GRB 010921 DPOSS Images Available
  69. IPN triangulation of GRB010921 (=H1761)
  70. H1761: A Bright GRB Detected by HETE
  71. Probable SGR or Short Duration GRB Detected by HETE
  72. BeppoSAX/GRBM detection of GRB010728
  73. GRB 010222 - WHT BVRI images
  74. GRB010629: Optical Observations
  75. SGR1900+14: High Fluence Burst Localized by HETE
  76. GRB010629: A Burst Localized by HETE
  77. SGR1900+14: Second Burst Localized by HETE
  78. SGR1900+14: A Burst Localized by HETE
  79. SGR1806-20: A Second, Intense Burst Localized by HETE
  80. SGR1806-20: Localization by HETE
  81. GRB010214, optical observations
  82. GRB Observation Report
  83. REVISED LOCATION OF GRB010326A
  84. GRB010326B: Localization by HETE (2nd GRB for this date)
  85. GRB010326: Refined Localization by HETE
  86. GRB010326: Localization by HETE
  87. Optical Observations of GRB 010324
  88. GRB 010222 - HEGRA GeV/TeV Observations
  89. GRB010222, possible increase of optical decay slope
  90. GRB 010220: Near-IR Observations
  91. GRB 010222: Near-IR Observations
  92. GRB010214, candidate optical afterglow
  93. GRB010214, optical observations
  94. J-Band Observation of GRB 010214.
  95. Possible InfraRed Transient of GRB 010214.
  96. GRB010214 Optical Observation
  97. GRB010213 detected by HETE
  98. GRB010126, TNG R-band observations
  99. Optical Observations of GRB 001018 at Keck
  100. H band observation of GRB 001212

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