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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').
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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"

21983 results found.

  1. GRB 080413B: GROND detection of afterglow in all bands
  2. GRB 080413: TAROT Calern observatory optical observations
  3. GRB 080413: ROTSE-III Detection of Optical Counterpart
  4. GRB 080411: Swift/UVOT refined analysis
  5. GRB 080411: Swift-XRT Refined Analysis
  6. GRB 080411: VLT redshift
  7. GRB 080411: GROND detection of optical afterglow candidate
  8. GRB 080408: GROND detection of optical/NIR afterglow candidate
  9. GRB 080330 optical observations
  10. Swift/UVOT observations of GRB080409
  11. UVOT/Swift Observations of GRB080408
  12. GRB 080409: REM optical/NIR observations
  13. GRB 080319A: Early RAPTOR optical limits
  14. GRB 080319B: HST observations
  15. GRB 080330: RAPTOR detection of prompt optical flash
  16. GRB 080319B: Potential Jet Break Observed by Swift-XRT and UVOT
  17. GRB 080405: Mars Oddysey and Swift-BAT detection, possible host galaxy
  18. GRB 080325: optical upper limit
  19. GRB 080330: Prompt PROMPT Observations
  20. GRB080330: optical observations
  21. GRB080330: optical observations
  22. GRB 080330: REM optical observations
  23. GRB 080330, SMARTS optical/IR afterglow observations
  24. GRB 080330 Swift-UVOT refined analysis
  25. GRB080330: TNT optical observations
  26. GRB 080330: Redshift Confirmation from Hobby-Eberly Telescope Spectroscopy
  27. GRB 080330: GROND Observations
  28. GRB 080330: TAROT Calern observatory optical observations
  29. GRB 080330A: PAIRITEL Infrared Detections
  30. GRB080330 - SDSS Pre-Burst Observations
  31. GRB 080330: Liverpool Telescope Optical observations
  32. GRB 080330A: ROTSE-III Detection of Optical Counterpart
  33. GRB 080330: TAROT Calern observatory optical detection
  34. GRB 080319B: Continued Gemini-South followup and possible host galaxy
  35. GRB 080328: BTA optical imaging and spectroscopy
  36. Swift/UVOT observations of GRB080328
  37. GRB080328: Faulkes Telescope North observations
  38. GRB 080325: Subaru detection of NIR afterglow candidate
  39. GRB080310, late-time photometry with LBT
  40. GRB 080325: GROND Observations
  41. GRB080319B: optical observations
  42. GRB 080325: Swift/UVOT Upper Limits
  43. GRB 080319C: Gemini-North spectroscopic redshift
  44. GRB 080325: Early observations from OSN
  45. GRB 080325: NIR afterglow candidate
  46. GRB 080319D: GROND Detection of the Optical Counterpart
  47. GRB 080319B : Apparent spectral evolution in very early Swift/XRT WT mode data: intrinsic or pile-up effect?
  48. GRB 080319B: Spitzer Mid-infrared Observations
  49. GRB 080319B: Second & Third Epoch WSRT Radio Observations
  50. Radio Detection of GRB 080319B
  51. GRB 080319D: GROND Observations
  52. GRB080319B: Time-Independent XRT Spectrum
  53. GRB 080319C: UVOT Observations
  54. GRB 080319B: UVOT Observations
  55. GRB 080319A: UVOT Observations
  56. GRB 080319B - CARMA mm Observations
  57. GRB 080320: Early Super-LOTIS Observations
  58. GRB 080320: optical limit
  59. GRB 080320: Gemini-N optical afterglow
  60. GRB 080319B: Gemini-South photometry
  61. GRB 080319B: Allen Telescope Array Observations
  62. GRB 080319B optical observations
  63. GRB 080319B: WSRT Radio Observations
  64. GRB 080320: SDSS source and Gemini-N observations
  65. GRB 080319C: Early RAPTOR Observations
  66. GRB 080319C: KAIT OA observations
  67. GRB 080320 - SDSS Pre-Burst Observations
  68. GRB 080319B : Lulin observation of temporal break at 0.2 days
  69. GRB 080319B: ROTSE-III Observations of Optical Counterpart
  70. GRB 080319B: optical observations
  71. GRB 080319C - SDSS Pre-Burst Observations
  72. GRB 080319A SDSS Pre-Burst Observations
  73. GRB080319B - SDSS Pre-Burst Observations
  74. GRB 080319B: RAPTOR observations of a naked eye burst
  75. GRB 080319A: Swift-XRT Team Refined Analysis
  76. GRB 080319D: Swift/UVOT Refined Analysis of the Fading Optical Afterglow Candidate
  77. GRB 080319B: Hobby-Eberly Telescope Spectroscopy
  78. GRB 080319B: TORTORA synchronous observation
  79. GRB 080319B: REM early data
  80. VLT/UVES redshift of GRB 080319B
  81. GRB 080319C: Early Super-LOTIS Observations
  82. GRB 080319C: KAIT OA candidate
  83. GRB 080319A: REM observations
  84. GRB 080319B: Change in power law decay index
  85. GRB 080319B: Gemini-South Spectroscopy
  86. GRB 080319A: optical observations at the NOT
  87. GRB0 080319B : LOAO optical observation
  88. GRB 080319b: Early IR Imaging from PAIRITEL
  89. GRB080319B Liverpool Telescope optical afterglow candidate
  90. GRB 080319B: Super-LOTIS Detection of a Bright OT
  91. GRB 080319B: REM observations
  92. GRB080319A: P60 Optical Afterglow Observations
  93. GRB080315: Bok Optical Observations
  94. Swift/UVOT observations of GRB 080315
  95. GRB 080315: Optical observations
  96. GRB 080315: TAROT Calern observatory optical observations
  97. GRB080310 : Lulin Optical observations
  98. GRB080310, unusual slow decay in the optical
  99. GRB080310 : Optical observations by LOAO and Lulin
  100. GRB 080310: ROTSE-III Observations of Optical Counterpart

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