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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"

32702 results found.

  1. GRB 070714B: Swift/UVOT Upper Limits
  2. GRB 070616: No Evidence for I Band Afterglow
  3. GRB 070714A: Swift XRT refined analysis
  4. GRB070714B: Swift-XRT refined analysis
  5. GRB 070707: Swift-XRT follow-up observations
  6. GRB 070714b ("Bastille"): Optical Pre-Imaging (Clarification)
  7. GRB 070714 ("Bastille"): Optical Pre-Imaging
  8. GRB 070714B, Swift-BAT refined analysis of the short hard burst
  9. GRB 070714A, Swift-BAT refined analysis
  10. GRB 070714 : Liverpool Telescope optical counterpart ?
  11. GRB 070704: RTT150 optical observations
  12. GRB 070704: Suzaku/WAM observation of the prompt emission
  13. Konus-Wind observation of GRB 070707
  14. GRB 070707: optical afterglow
  15. GRB 070707: object inside XRT error circle
  16. Swift/UVOT Observations of GRB070707
  17. Swift XRT observation of GRB 070707
  18. GRB 070707: VLT observations
  19. GRB 070429B: NIR Observations
  20. GRB070704: FAVOR optical observations
  21. GRB 070704 : Liverpool Telescope Observations
  22. GRB 070611: VLT observations
  23. VLA detection of GRB 070612A in C Band
  24. Konus-Wind observation of GRB 070626
  25. GRB 070704: Swift-XRT refined analysis
  26. Swift/UVOT Observations of GRB070704
  27. GRB 070704, Swift-BAT refined analysis
  28. GRB 070704: Correction to GCN Circ 6594
  29. GRB 070626: Suzaku/WAM observation of the prompt emission
  30. GRB 070628 Swift-UVOT Refined Analysis
  31. GRB 070628: NIR detection of afterglow
  32. GRB 070628, Swift-BAT refined analysis
  33. GRB 070628: TAROT La Silla observatory optical observations
  34. GRB 070628: Swift XRT refined analysis
  35. GRB 070628: Watcher Observations
  36. GRB 070612A: Allen Telescope Array Observations
  37. INTEGRAL burst GRB070615: X-ray continued observations
  38. GRB 070616 : WIDGET simultaneous optical observations
  39. GRB 070616: Suzaku/WAM observation of the prompt emission
  40. GRB 070612A: Second Epoch WSRT Radio Observations
  41. GRB070621: RTT150 optical observations
  42. GRB 070621: VLT optical observations
  43. GRB 070621: Swift/UVOT Upper Limits
  44. Keck Laser Guide Star Adaptive Optics Imaging of GRB 070621
  45. GRB 070621: Swift-BAT refined analysis
  46. GRB070621: Swift XRT refined analysis
  47. GRB 070621: Gemini South optical imaging
  48. Observations of GRB070612A at Calar Alto
  49. GRB 070621: NOT observations
  50. GRB070621: OPTIMA-Burst optical upper limit
  51. GRB 070621: Watcher Observations
  52. GRB 070621: ROTSE-III Prompt Optical Limits
  53. GMRT upper limit of GRB 070610/SWIFT J195509.6+261406 in 610 MHz
  54. GRB 070612A: TNG optical observations
  55. Swift/UVOT detection of GRB070616 optical afterglow.
  56. GRB070612A: Gemini Spectroscopic Redshift
  57. GRB 070612A: NOT observations
  58. GRB070616: Optical Observation by MITSuME Akeno
  59. GRB 070612B: Optical Observation by MITSuME Akeno
  60. GRB070616: Optical Observation by MITSuME Okayama
  61. GRB 070616, Swift-BAT further refined analysis
  62. GRB 070616: Swift XRT refined circular
  63. GRB 070612A: Possible WSRT Radio Detection
  64. Swift/UVOT observations of GRB070616
  65. GRB 070616: TLS observation
  66. Swift XRT observations of the INTEGRAL burst GRB070615: Possible
  67. GRB 070616, Swift-BAT partial refined analysis
  68. GRB 070612B: optical observations
  69. VLA upper limit on GRB 070610
  70. GRB 070615
  71. GRB 070612A: Super-LOTIS observations
  72. GRB 070612A: Rapid Decay
  73. GRB 070612A: Suzaku/WAM observation of the prompt emission
  74. SWIFT J195509.6+261406 / GRB 070610: OPTIMA-Burst observations
  75. GRB070612A: MITSuME Okayama Observation
  76. GRB 070612A: continued SARA observations
  77. GRB 070612A: spectral lag
  78. GRB 070611: Watcher Observations
  79. GRB 070612A: MDM Observations
  80. GRB 070612A: P60 Confirmation of Afterglow and An Underlying, Nearby
  81. GRB 070612B: SARA upper limit
  82. GRB 070612B, Swift-BAT refined analysis
  83. GRB 070612A, Swift-BAT refined analysis
  84. GRB 070612B: Swift-XRT refined analysis
  85. SWIFT J195509.6+261406 / GRB 070610: SWIFT continued observations
  86. GRB 070612B: Swift/UVOT upper limits
  87. GRB070612B: P60 Observations
  88. GRB 070612B: KAIT limits
  89. GRB 070612A: SARA detection of possible OT
  90. GRB 070612B: Swift XRT position from downlink data
  91. GRB 070610: MITSuME OAO optical upper limit
  92. GRB070612 - SDSS Pre-Burst Observations
  93. GRB 070610: OPTIMA-Burst detection of continued strong flaring activity
  94. GRB 070610: SARA upper limit
  95. GRB 070610: Swift-XRT refined analysis
  96. GRB 070610: TLS RRM sees flaring behaviour - Galactic transient?
  97. GRB 070611: Swift/UVOT Observations
  98. GRB 070611: Swift-XRT refined analysis
  99. GRB 070611, Swift-BAT refined analysis
  100. GRB 070610: Watcher Observations

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