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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"

32551 results found.

  1. GRB 080506: Observations from NOT
  2. GRB 080506: optical observation from Ondrejov
  3. GRB 080506: TLS afterglow detection in VRIZ
  4. GRB 080506: Optical observation with KANATA/TRISPEC
  5. GRB 080503: VLA radio upper limit
  6. GRB 080503: Observations from NOT
  7. GRB 080503: Slow-rise optical AG ?
  8. GRB 080430: TLS imaging one day after the GRB
  9. GRB 080503: No further optical rebrightening
  10. GRB 080503: Late-time Optical rebrightening (possible mini-SN)
  11. GRB 080503, Swift-BAT lag and time-resolved spectral analysis
  12. GRB 080503: MITSuME Ishigakijima optical upper limits
  13. GRB080503: Swift/UVOT Upper Limits
  14. GRB080503 XRT refined analysis
  15. GRB 080503, Swift-BAT refined analysis
  16. GRB 080430
  17. GRB 080430
  18. GRB 080503: MITSuME Akeno optical upper limits
  19. GRB 080503: New candidate afterglow/host in Gemini imaging
  20. GRB 080503: Optical afterglow candidate and LRIS spectroscopy of the short burst
  21. GRB 080411: Continued Swift Monitoring
  22. GRB 080430: Optical observations
  23. GRB 080430: Shallow decay
  24. GRB080430: RTT150 Optical Observations
  25. GRB080430: Swift/UVOT observations
  26. VLA radio upper limit on GRB 080430
  27. GRB 080430 - multicolor observations of the afterglow
  28. GRB 080430 optical observations
  29. GRB 080430, Swift-BAT refined analysis
  30. GRB080430: optical observations
  31. GRB 080430: Hobby-Eberly Telescope Absorption Redshift
  32. GRB 080430: Swift-XRT refined analysis
  33. GRB080430: Optical observation in AsU CAS Ondrejov & Brno
  34. GRB080426: Observations from CAHA
  35. GRB 080426: Swift-XRT refined analysis
  36. GRB080426: Swift/UVOT upper limits
  37. GRB 080426, Swift-BAT refined analysis
  38. Possible GRB 080315: XRT non-detection of afterglow
  39. GRB 080320 : Faulkes Telescope North Observations
  40. GRB 080319A : Liverpool and Faulkes Telescopes Observations
  41. GRB080319A: MAGIC telescope GeV observation
  42. Swift-BAT trigger 309665 is not a GRB
  43. GRB 080420A: ROTSE-III Optical Limits on a possible short burst
  44. GRB 080420?: Swift detection of a possible short burst
  45. GRB 080413A: Suzaku/WAM and Swift/BAT joint spectral analysis
  46. GRB 080413B: Rapid PROMPT Observations
  47. Swift XRT and UVOT observations of GRB080414
  48. GRB 080319B: Jet Break, Energetics, Supernova
  49. GRB 080413B: Faulkes Telescope South optical afterglow observations
  50. GRB 080413A: Liverpool Telescope and Faulkes Telescope South optical observations
  51. GRB 080413A: Suzaku WAM observation of the prompt emission
  52. GRB 080413B: Suzaku WAM observation of the prompt emission
  53. GRB 080413A: MOA-II optical afterglow observations
  54. GRB 080319B: Continued Gemini-N monitoring
  55. GRB 080414: RTT150 optical observations
  56. GRB 080414 Watcher observations
  57. VLA radio observations of GRB 080413B
  58. GRB 080413A: Gemini-South Spectroscopy
  59. GRB 080413B: Gemini-South Spectroscopy
  60. VLA radio observations of GRB 080413A
  61. GRB 080413B: Ep,i-Eiso correlation
  62. GRB080413B
  63. Swift-BAT spectral lag analysis of GRB 080413B
  64. GRB 080413a, SMARTS optical/IR afterglow observations
  65. GRB 080413B: Swift XRT refined analysis
  66. GRB080413A: Swift/UVOT observations
  67. GRB 080413B, Swift-BAT refined analysis
  68. GRB 080413A: Swift-XRT refined analysis
  69. GRB 080413A, Swift-BAT refined analysis
  70. GRB 080413A Bootes observation
  71. GRB 080413A: VLT/UVES redshift
  72. GRB 080413B: VLT redshift
  73. GRB080413B: REM NIR & Optical Observation
  74. GRB 080413B: GROND detection of afterglow in all bands
  75. GRB 080413A: REM detection of the NIR Afterglow
  76. GRB 080413: ROTSE-III Detection of Optical Counterpart
  77. GRB 080411: Swift/UVOT refined analysis
  78. GRB 080411, Swift-BAT refined analysis
  79. GRB 080411: Swift-XRT Refined Analysis
  80. Konus-Wind observation of GRB 080411
  81. GRB 080411: VLT redshift
  82. GRB 080411: GROND detection of optical afterglow candidate
  83. GRB080330: MAGIC telescope GeV observation
  84. GRB 080330: Swift-XRT refined position retraction
  85. GRB 080409: Swift-BAT refined analysis
  86. GRB 080408: GROND detection of optical/NIR afterglow candidate
  87. GRB 080330 optical observations
  88. Swift/UVOT observations of GRB080409
  89. GRB 080409: Swift XRT refined analysis
  90. UVOT/Swift Observations of GRB080408
  91. GRB 080408: Swift-XRT position of a possible afterglow
  92. GRB 080409: REM optical/NIR observations
  93. GRB 080408: Analysis of AGILE Gamma-ray data
  94. GRB 080319A: Early RAPTOR optical limits
  95. GRB 080319B: HST observations
  96. GRB 080330: RAPTOR detection of prompt optical flash
  97. GRB 080319B: Potential Jet Break Observed by Swift-XRT and UVOT
  98. GRB 080405: Swift-BAT refined analysis
  99. GRB 080405: Swift-XRT position
  100. GRB 080325: optical upper limit

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