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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"

32690 results found.

  1. Konus-Wind observation of GRB 070707
  2. GRB 070707: optical afterglow
  3. GRB 070707: object inside XRT error circle
  4. Swift/UVOT Observations of GRB070707
  5. Swift XRT observation of GRB 070707
  6. GRB 070707: VLT observations
  7. GRB 070429B: NIR Observations
  8. GRB070704: FAVOR optical observations
  9. GRB 070704 : Liverpool Telescope Observations
  10. GRB 070611: VLT observations
  11. VLA detection of GRB 070612A in C Band
  12. Konus-Wind observation of GRB 070626
  13. GRB 070704: Swift-XRT refined analysis
  14. Swift/UVOT Observations of GRB070704
  15. GRB 070704, Swift-BAT refined analysis
  16. GRB 070704: Correction to GCN Circ 6594
  17. GRB 070626: Suzaku/WAM observation of the prompt emission
  18. GRB 070628 Swift-UVOT Refined Analysis
  19. GRB 070628: NIR detection of afterglow
  20. GRB 070628, Swift-BAT refined analysis
  21. GRB 070628: TAROT La Silla observatory optical observations
  22. GRB 070628: Swift XRT refined analysis
  23. GRB 070628: Watcher Observations
  24. GRB 070612A: Allen Telescope Array Observations
  25. INTEGRAL burst GRB070615: X-ray continued observations
  26. GRB 070616 : WIDGET simultaneous optical observations
  27. GRB 070616: Suzaku/WAM observation of the prompt emission
  28. GRB 070612A: Second Epoch WSRT Radio Observations
  29. GRB070621: RTT150 optical observations
  30. GRB 070621: VLT optical observations
  31. GRB 070621: Swift/UVOT Upper Limits
  32. Keck Laser Guide Star Adaptive Optics Imaging of GRB 070621
  33. GRB 070621: Swift-BAT refined analysis
  34. GRB070621: Swift XRT refined analysis
  35. GRB 070621: Gemini South optical imaging
  36. Observations of GRB070612A at Calar Alto
  37. GRB 070621: NOT observations
  38. GRB070621: OPTIMA-Burst optical upper limit
  39. GRB 070621: Watcher Observations
  40. GRB 070621: ROTSE-III Prompt Optical Limits
  41. GMRT upper limit of GRB 070610/SWIFT J195509.6+261406 in 610 MHz
  42. GRB 070612A: TNG optical observations
  43. Swift/UVOT detection of GRB070616 optical afterglow.
  44. GRB070612A: Gemini Spectroscopic Redshift
  45. GRB 070612A: NOT observations
  46. GRB070616: Optical Observation by MITSuME Akeno
  47. GRB 070612B: Optical Observation by MITSuME Akeno
  48. GRB070616: Optical Observation by MITSuME Okayama
  49. GRB 070616, Swift-BAT further refined analysis
  50. GRB 070616: Swift XRT refined circular
  51. GRB 070612A: Possible WSRT Radio Detection
  52. Swift/UVOT observations of GRB070616
  53. GRB 070616: TLS observation
  54. Swift XRT observations of the INTEGRAL burst GRB070615: Possible
  55. GRB 070616, Swift-BAT partial refined analysis
  56. GRB 070612B: optical observations
  57. VLA upper limit on GRB 070610
  58. GRB 070615
  59. GRB 070612A: Super-LOTIS observations
  60. GRB 070612A: Rapid Decay
  61. GRB 070612A: Suzaku/WAM observation of the prompt emission
  62. SWIFT J195509.6+261406 / GRB 070610: OPTIMA-Burst observations
  63. GRB070612A: MITSuME Okayama Observation
  64. GRB 070612A: continued SARA observations
  65. GRB 070612A: spectral lag
  66. GRB 070611: Watcher Observations
  67. GRB 070612A: MDM Observations
  68. GRB 070612A: P60 Confirmation of Afterglow and An Underlying, Nearby
  69. GRB 070612B: SARA upper limit
  70. GRB 070612B, Swift-BAT refined analysis
  71. GRB 070612A, Swift-BAT refined analysis
  72. GRB 070612B: Swift-XRT refined analysis
  73. SWIFT J195509.6+261406 / GRB 070610: SWIFT continued observations
  74. GRB 070612B: Swift/UVOT upper limits
  75. GRB070612B: P60 Observations
  76. GRB 070612B: KAIT limits
  77. GRB 070612A: SARA detection of possible OT
  78. GRB 070612B: Swift XRT position from downlink data
  79. GRB 070610: MITSuME OAO optical upper limit
  80. GRB070612 - SDSS Pre-Burst Observations
  81. GRB 070610: OPTIMA-Burst detection of continued strong flaring activity
  82. GRB 070610: SARA upper limit
  83. GRB 070610: Swift-XRT refined analysis
  84. GRB 070610: TLS RRM sees flaring behaviour - Galactic transient?
  85. GRB 070611: Swift/UVOT Observations
  86. GRB 070611: Swift-XRT refined analysis
  87. GRB 070611, Swift-BAT refined analysis
  88. GRB 070610: Watcher Observations
  89. GRB 070611: VLT redshift
  90. GRB 070611: ROTSE-III Detection of Late Rising Optical Counterpart
  91. GRB 070611; Swift-XRT position
  92. GRB 070611: ROTSE-III Optical Limits
  93. GRB 070610: Swift-UVOT Upper Limits
  94. GRB 070610: OPTIMA-Burst high-time-resolution optical observations
  95. GRB 070610, Swift-BAT refined analysis
  96. GRB 070610; Swift-XRT position
  97. GRB 070411: TAROT Calern observatory optical observations
  98. GRB 070419A, deep LBT photometry and possible supernova detection
  99. GRB070520B: optical observations
  100. GRB070520: optical observation

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