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GCN Circulars

GCN Circulars are rapid astronomical bulletins submitted by and distributed to community members worldwide. They are used to share discoveries, observations, quantitative near-term predictions, requests for follow-up observations, or future observing plans related to high-energy, multi-messenger, and variable or transient astrophysical events. 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"

32485 results found.

  1. GRB 080319B: Allen Telescope Array Observations
  2. GRB 080319B optical observations
  3. GRB 080319C, Swift-BAT refined analysis
  4. Konus-Wind observation of GRB 080319B
  5. GRB 080319B: WSRT Radio Observations
  6. GRB 080320: SDSS source and Gemini-N observations
  7. GRB 080320: optical limit from IAC80
  8. GRB 080319C: Early RAPTOR Observations
  9. GRB 080319B: second epoch imaging from Canarias (correction to GCN7469)
  10. GRB 080319C: KAIT OA observations
  11. GRB 080320: ROTSE-III Optical Limits
  12. GRB 080319B : Lulin observation of temporal break at 0.2 days
  13. GRB 080319B: ROTSE-III Observations of Optical Counterpart
  14. GRB 080319B: optical observations
  15. GRB 080319C - SDSS Pre-Burst Observations
  16. GRB 080319A SDSS Pre-Burst Observations
  17. Swift-BAT trigger 306829 is IGR J16479-4514
  18. GRB080319B - SDSS Pre-Burst Observations
  19. GRB 080319B: RAPTOR observations of a naked eye burst
  20. GRB 080319A: Swift-XRT Team Refined Analysis
  21. GRB 080319B, Swift-BAT refined analysis
  22. GRB080319B: Prompt PROMPT Detections
  23. GRB 080319C: Swift-XRT Team Refined Analysis
  24. GRB 080319B: Swift-XRT Team Refined Analysis
  25. GRB 080319D: Swift/UVOT Refined Analysis of the Fading Optical Afterglow Candidate
  26. GRB 080319C: AGILE-MCAL observation of the prompt emission
  27. GRB 080319B: Hobby-Eberly Telescope Spectroscopy
  28. GRB 080319D: MASTER-VWF-Kislovodsk optical observation
  29. GRB 080319C: MASTER-VWF-Kislovodsk optical observation
  30. GRB 080319B: TORTORA synchronous observation
  31. VLT/UVES redshift of GRB 080319B from FeII fine-structure lines
  32. GRB 080319A/B/C: INTEGRAL SPI-ACS light curves available
  33. GRB 080319A, Swift-BAT refined analysis
  34. GRB 080319B: REM early data
  35. GRB 080319b light curve by Pi-of-the-Sky
  36. VLT/UVES redshift of GRB 080319B
  37. GRB 080319C: Early Super-LOTIS Observations
  38. GRB 080319A: REM observations
  39. GRB 080319B: Change in power law decay index
  40. GRB 080319B: Gemini-South Spectroscopy
  41. GRB 080319A: optical observations at the NOT
  42. GRB0 080319B : LOAO optical observation
  43. GRB 080319B: Super-LOTIS Detection of a Bright OT
  44. GRB 080319B: REM observations
  45. GRB080319A: P60 Optical Afterglow Observations
  46. GRB 080319B: UVOT Position
  47. GRB080310, LBT and MDM photometry
  48. GRB080315: Bok Optical Observations
  49. Swift/UVOT observations of GRB 080315
  50. Swift trigger 306323: Swift-BAT/XRT refined analysis
  51. GRB 080315: Optical observations
  52. GRB080310 : Lulin Optical observations
  53. GRB080310, unusual slow decay in the optical
  54. GRB 080310: GAO 150cm telescope Optical Observation
  55. GRB080310 : Optical observations by LOAO and Lulin
  56. GRB 080310: ROTSE-III Observations of Optical Counterpart
  57. GRB080310: Optical observation by MITSuME telescope
  58. GRB080310, optical observations with the LBT
  59. GRB 080307: GAO 150cm telescope Optical Observation
  60. GRB 080229A: GAO 150cm telescope Optical Observation
  61. GRB 080310: PAIRITEL detection and PAIRITEL+KAIT+UVOT SED
  62. GRB 080307: NIR upper limit
  63. GRB 080229: NIR upper limit
  64. GRB 080310: early RAPTOR multicolor observations
  65. GRB 080310, Swift-BAT refined analysis
  66. GRB080210: optical observations
  67. GRB080307: optical upper limit
  68. GRB 080310: Swift-XRT refined analysis
  69. GRB 080310: Swift/UVOT Refined Analysis
  70. GRB 080310: Redshift from Keck/DEIMOS Spectra
  71. GRB080310 : Lulin optical observation
  72. GRB 080310: RRM optical photometry with the VLT
  73. GRB080310, detection of break in optical
  74. GRB 080310: VLT/UVES spectroscopy
  75. GRB080310, optical observations with LBT
  76. GRB 080310: Magellan redshift revision
  77. GRB 080310: Lick/Kast Spectroscopy
  78. GRB080310: Super-LOTIS suggestion of brightening
  79. GRB 080310, SMARTS optical/IR afterglow observations
  80. GRB 080310: REM observations
  81. GRB080307, optical upper limit
  82. GRB080229, optical upper limit
  83. GRB 080307: Swift-XRT Team refined analysis
  84. GRB 080307: Swift/UVOT Upper Limits
  85. GRB 080307: Early RAPTOR Limits
  86. GRB 080307, Swift-BAT refined analysis
  87. GRB 080307: TNT optical observation
  88. GRB080307: Optical upper limits
  89. GRB 080307: Gemini-N i-band observations - candidate afterglow
  90. GRB 080307: BOAO imaging - retraction and new limit
  91. GRB 080307: retraction of UVOT candidate
  92. GRB 080307, Preliminary Swift-BAT refined analysis
  93. VLA possible radio detection of GRB 080229
  94. GRB 080303: Swift/UVOT follow-up of afterglow detection
  95. GRB 080303, Swift-BAT refined analysis
  96. GRB 080303: Rapid PROMPT Detections
  97. GRB080303: Swift XRT refined analysis
  98. Swift UVOT observations of GRB080229B
  99. GRB080229B: Swift XRT afterglow observation
  100. GRB 080303A: Faulkes Telescope South optical afterglow observations

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