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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.

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subject:"Swift"
body:"GRB"
submitter:"Judith Racusin"

21092 results found.

  1. GRB080723B: Swift/UVOT Upper Limits
  2. GRB 080725: REM prompt observations
  3. GRB 080723A: Swift/UVOT Upper Limits
  4. GRB 080721 : Lulin 2nd optical follow-ups
  5. TNG/DOLORES redshift for GRB080721
  6. GRB 080721: UVOT Follow-Up Observations
  7. GRB 080714: Swift/UVOT Detection of an Optical Afterglow
  8. GRB 080603A: CrAO optical observations
  9. GRB 080603B: optical observations in MAO
  10. GRB 080603B: optical observations in CrAO
  11. GRB 080710: TLS observations, steepening afterglow decay
  12. GRB 0800707: optical observations
  13. GRB 080710: Rapid PROMPT Observations
  14. GRB 080710: Swift-XRT refined analysis
  15. GRB080710: Swift/UVOT observations
  16. GRB 080710: Faulkes Telescope North observations
  17. GRB 080710: Gemini spectroscopy and probable redshift
  18. UVOT white band observations of GRB080710
  19. GRB 080710: REM afterglow confirmation & brightening
  20. GRB 080710: KAIT OA candidate
  21. GRB 080707: possible break in the X-rays
  22. GRB 080707: GROND Confirmation of the Optical Afterglow
  23. UVOT observations of GRB080707
  24. GRB 080707: GROND Detection of the Optical Afterglow Candidate
  25. GRB 080703: GROND Upper Limits
  26. GRB 080702B: GROND Upper Limits
  27. GRB 080703: VLT observations of the afterglow
  28. GRB 080703A: ROTSE-III Detection of Optical Counterpart
  29. GRB 080702b: LCO optical observations
  30. GRB 080702B: Swift XRT and UVOT observations
  31. GRB 080701A: Early RAPTOR optical limits
  32. Swift Trigger 315630: Swift/UVOT Upper Limits
  33. Swift Trigger 315630: Probably not a GRB
  34. GRB 080701A: Swift/UVOT Upper Limits
  35. GRB 080701A: Early Super-LOTIS Observations
  36. GRB 080701: Swift detection of a burst
  37. GRB 080625: Swift/UVOT Follow-Up Observations
  38. GRB 080625: Further observations from OSN
  39. GRB 080625:Swift-XRT detection of the afterglow
  40. GRB 080625: Observations at OSN
  41. GRB 080623: GROND upper limits
  42. GRB080623: Swift UVOT followup observations
  43. GRB 080623: TAROT La Silla observatory optical observations
  44. GRB 080623: Swift detection of a burst
  45. Swift-BAT trigger 314975 possible burst
  46. GRB 070809: Putative host galaxy and redshift
  47. GRB 080603A: optical observations on June 04
  48. GRB080613A: Swift/UVOT Upper Limits
  49. GRB 080613A: GROND Confirmation of the Afterglow Candidate
  50. GRB 080613B: GROND Upper Limits
  51. GRB 080613B - NOT optical and IR nondetections
  52. GRB080613B: Swift/UVOT Upper Limits
  53. GRB 080613: Faulkes Telescope North optical candidate
  54. GRB 080603A: Late-time Keck imaging and spectroscopy
  55. Swift observations of BAT Slew Survey event (Trigger=010)
  56. GRB 080603A: final Swift-XRT observations.
  57. GRB080607: RTT150 optical observations
  58. GRB 080603A: optical observations
  59. GRB 080607: Swift-XRT refined analysis
  60. Swift/UVOT Observations of GRB080607
  61. GRB 080605: optical observations
  62. GRB 080607 KAIT observations
  63. GRB 080605: GROND 2nd epoch observations
  64. GRB 080607 - PAIRITEL NIR detection
  65. GRB 080607: Keck/LRIS spectroscopy and redshift
  66. GRB 080607: Super-LOTIS early observations
  67. GRB 080607: ROTSE-III Detection of Optical Counterpart
  68. GRB 080605: TLS RRM Analysis, Plateau/Rebrightening, Red OT
  69. GRB 080605: Swift-UVOT refined analysis
  70. GRB 080605: Swift-XRT refined analysis
  71. GRB080605: observation by BOOTES
  72. GRB 080605: GROND detection of the optical afterglow candidate
  73. GRB080605: optical observations
  74. GRB 080604: Xinglong R band observation
  75. GRB 080603A: Xinglong R band observation
  76. GRB 080603B: TLS Afterglow Observation
  77. GRB 080603A: TLS Afterglow Observation
  78. Swift/UVOT observations of GRB080604
  79. GRB 080604: Gemini-North spectroscopy
  80. GRB 080603B : Xinglong EST observations
  81. GRB 080603B : Liverpool Telescope Observations
  82. GRB 080603A: Swift-XRT detection of the afterglow
  83. GRB 080430: optical observations
  84. GRB 080603B: Swift/UVOT detection of the afterglow
  85. GRB 080603A: Swift/UVOT detection of the afterglow
  86. GRB080603B: RTT150 optical observations, break in light curves
  87. GRB 080604: Early Super-LOTIS Observations
  88. GRB 080516: TAROT La Silla observatory optical observations
  89. GRB 080603B: BOOTES2/TELMA optical observations
  90. GRB 080603B: TAROT Calern observatory detection of a plateau in the light curve
  91. GRB080603: Super-LOTIS detection of Optical Counterpart
  92. GRB 080603: Gemini-North redshift
  93. SGR 1627-41: Chandra/RXTE/Swift Observations Scheduled
  94. GRB 080602: Swift-XRT refined analysis
  95. GRB 080602: NOT R-band upper limit
  96. GRB 080523: afterglow confirmation and redshift constraints
  97. GRB 080524: Swift XRT and UVOT analysis
  98. GRB 080503: 2nd Epoch Chandra X-ray Observations
  99. GRB 080523: VLT optical observations
  100. Swift/UVOT observations of GRB 080523

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