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GCN Circulars

GCN Circulars are rapid astronomical bulletins submitted by and distributed to community members worldwide. They are used to share discoveries, observations, quantitative near-term predictions, requests for follow-up observations, or future observing plans related to high-energy, multi-messenger, and variable or transient astrophysical events. 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').

10637 results found.

  1. GRB 060526: RTT150 optical observations
  2. GRB060526: optical observations
  3. GRB 060526: Swift/XRT Team refined analysis
  4. GRB 060522: Swift/UVOT Observations of the Optical Afterglow
  5. XMM-Newton observation of GRB060510b
  6. GRB 060522: Swift/XRT Team refined analysis
  7. GRB 060522: Swift-BAT Refined Analysis
  8. GRB 060516: Refined analysis of the Swift-BAT burst
  9. GRB 060515: ROTSE-III Optical Limits
  10. GRB 060512: Detection of NIR afterglow
  11. GRB060512 Name Correction: LT Afterglow detection
  12. GRB060512: Liverpool Telescope Afterglow detection
  13. GRB 060512: Swift detection of a burst with an optical afterglow
  14. GRB 060510A: Swift/UVOT Detection of an Optical Afterglow
  15. Konus-Wind observation of GRB 060510A
  16. GRB 060428a, SMARTS optical/IR afterglow detection
  17. GRB 060429: Suzaku WAM observation
  18. GRB060505: Swift/UVOT Observations
  19. GRB 060505: Swift XRT afterglow canditate position
  20. GRB 060502B: optical observations
  21. GRB 060502B: AROMA refined photometric calibration
  22. GRB 060429: Refined IPN error box and Konus-Wind spectrum
  23. GRB 060502B: AROMA optical observations
  24. GRB 060502B: Refined analysis of the Swift-BAT short burst
  25. GRB 060502B: Xinglong optical observation
  26. GRB 060502B: Swift detection of a short burst
  27. GRB060502: Super-LOTIS Observations
  28. GRB 060502: Swift detection of a burst with an optical counterpart
  29. GRB 060501: ROTSE-III Optical Limits
  30. GRB 060501: Swift detection of a burst
  31. Konus-Wind observation of GRB 060427B
  32. GRB060428B: optical observation
  33. GRB 060427B: MASTER optical observations
  34. GRB060428B: Swift XRT Team refined analysis
  35. GRB 060428B: Refined analysis of the Swift-BAT burst
  36. GRB060428A: Swift/UVOT observations.
  37. GRB 060428A: Refined analysis of the Swift-BAT burst
  38. GRB 060428: Swift detection of a burst
  39. GRB 060427: Refined analysis of the Swift-BAT burst
  40. GRB060427: Swift XRT Team refined analysis
  41. GRB 060427: Swift detection of a burst
  42. GRB 060425: IPN localization and KW spectrum of a short, hard burst
  43. GRB 060424: Refined analysis of the Swift-BAT burst
  44. GRB 060421: TTT Observations
  45. Konus-Wind observation of GRB 060418
  46. GRB(?) 060421: Swift detection of a burst
  47. GRB060418: Swift/UVOT Observations
  48. GRB060418: Optical Observations
  49. VLT/UVES observations of GRB060418
  50. GRB060418: Magellan/MIKE Spectroscopic Redshift
  51. SGR 1900+14: Refined analysis of the Swift-BAT outburst
  52. SGR 1900+14: Swift detection of an outburst
  53. GRB 060413: Refined analysis of the Swift-BAT burst
  54. SGR 1900+14: BAT observations
  55. Konus-Wind observation of the recent SGR 1900+14 activity. Will
  56. HETE Trigger 4043: ROTSE-III Optical Limits
  57. SGR 1900+14: bright burst detected by Konus-Wind on March 28
  58. SGR 1900+14: Swift-BAT detection of a cluster of outbursts
  59. SGR 1900+14: Swift-BAT detection of a bright outburst
  60. GRB060211B: optical observation
  61. SGR 1900+14: CORRECTION to GCN 4923
  62. SGR 1900+14: Refined Swift-BAT analysis of the renewed activity
  63. SGR 1900+14: Swift detection of renewed activity
  64. GRB 060323: optical afterglow confirmed
  65. GRB 060323: Swift XRT refined analysis
  66. GRB 060323: Swift detection of a burst with a possible optical afterglow
  67. GRB060219: optical observation
  68. Konus-Wind observation of GRB 060313
  69. GRB 060313: Further analysis of the Swift-BAT bright short hard burst
  70. GRB 060312: ROTSE-III Optical Limits
  71. Bright short hard GRB 060303: IPN localization and Konus spectrum
  72. GRB060218: analysis of the XMM-Newton observation
  73. GRB 060306: Swift-XRT team refined analysis
  74. GRB060218/SN 2006aj: optical observation in V
  75. GRB060218/SN 2006aj: optical observation
  76. GRB 060218 : GMRT observation [Correction and Improvement]
  77. GRB 060218/SN 2006aj: K-380 optical observations
  78. GRB 060218/SN 2006aj, SMARTS optical/IR observations
  79. GRB 060218 : Radio upper limits from GMRT
  80. GRB 060204B: GETS early limit
  81. GRB 060223: Swift XRT Team preliminary analysis
  82. GRB 060218: rebrightening
  83. GRB 060218: Likely an underluminous GRB
  84. GRB060218: UV Detection and Light Curves
  85. GRB 060219: Swift-XRT Team refined analysis
  86. GRB 060218: MDM Redshift
  87. Preliminary refined analysis of the Swift-BAT trigger 191157
  88. GRB060213: MASTER final result
  89. GRB060213:_MASTER_optical_observation
  90. Konus-Wind observation of bright hard GRB 060213
  91. GRB 060210: ARC NIR Detection of Afterglow and Possible Host Galaxy
  92. GRB 060210: Further refined analysis of the Swift-BAT burst
  93. GRB 060211B: Swift/BAT refined analysis
  94. GRB 060211: ROTSE-III Optical Limits
  95. GRB060206, optical observations
  96. GRB060210: Optical Observations
  97. GRB 060209(?): Swift-BAT detection of a possible burst
  98. GRB 060206: TTT Observations
  99. GRB 060206: optical observations at Asiago
  100. GRB 060206: Super-LOTIS observations

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