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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"

42435 results found.

  1. GRB 110921A: MITSuME Akeno Optical Observation
  2. GRB 110921A : TNT optical counterpart candidate
  3. GRB 110918A: Swift-XRT refined Analysis
  4. GRB 110918A: Spectroscopy from GTC
  5. GRB 110921A: MASTER-Net early limit
  6. GRB 110921A: Swift detection of a burst
  7. GRB 110915B : X-ray afterglow confirmation
  8. GRB 110918A: Swift/UVOT Detection of the Optical Counterpart
  9. GRB 110918A: rest-frame energetics in gamma-gays
  10. GRB 110918A optical observation
  11. GRB 110918A: Gemini-N redshift
  12. GRB 110918A: Afterglow Confirmation from PTF
  13. GRB 110918A: GROND detection of the afterglow candidate
  14. GRB 110918A: INT optical detection of Swift candidate afterglow
  15. GRB 110918A: Swift-XRT observations
  16. Konus-Wind observation of GRB 110918A
  17. GRB110918A: BOOTES-1 optical limit
  18. MAXI/GSC detection of a short soft X-ray transient
  19. Swift detection of short bursts from PSR J1647-4552
  20. GRB 110915A: Konus-Wind and Swift/BAT joint spectral analysis
  21. GRB 110915B: GROND Observations of the Optical/NIR Afterglow Candidate
  22. GRB 110915A: Swift/UVOT Upper Limits
  23. GRB 110915B: Swift/UVOT Upper Limits
  24. GRB 110915A: GROND Upper limits
  25. GRB 110915A, Swift-BAT refined analysis
  26. GRB 110915A: Swift-XRT refined Analysis
  27. GRB 110915B: Afterglow candidate from OSN
  28. GRB 110915A: Deep Near-IR Limits from Magellan
  29. GRB 110915B: XRT afterglow candidate
  30. GRB 110903A: Suzaku WAM observation of the prompt emission
  31. GRB 110915A: Deep Gemini-South i/z-band imaging
  32. GRB110915A MITSuME Okayama J-band upper-limit
  33. GRB 110915A: MITSuME Okayama and Ishigakijima Optical upper limits
  34. GRB 110915A: NOT observations
  35. GRB 110915A: 1.23m CAHA I-band observations
  36. GRB 110915B: SuperAGILE localization of a long GRB
  37. GRB 110915A: Enhanced Swift-XRT position
  38. GRB 110915A: GMG optical upper limit
  39. GRB 110915A: MITSuME Akeno Optical upper limits
  40. GRB 110915A: MASTER-Net early limit
  41. GRB 110915A: Prompt enhanced Swift-XRT position
  42. GRB 110915A: Swift detection of a burst
  43. GRB 110825A: Further Swift/XRT Observations
  44. GRB 110731A: SAO RAS and Terskol observations
  45. GRB 110906A(?): Burst detection (unconfirmed) from Swift-BAT slew data
  46. MAXI J1836-194 (originally GRB 110905A): Swift-BAT refined analysis
  47. GRB 110905A / X-ray transient MAXI J1836-194: TNT optical observation
  48. GRB 110905A: Potential BAT trigger on MAXI J1836-194
  49. GRB 110905A: KAIT observations
  50. GRB 110905A: Swift detection of a burst
  51. GRB 110903A: Fermi GBM observation
  52. GRB 110903A: Swift/UVOT Upper Limits
  53. GRB 110903A: Swift-XRT observations
  54. Konus-Wind observation of GRB 110903A
  55. GRB 110903A: a long GRB detected by INTEGRAL
  56. GRB 110820A: optical upper limit
  57. SGR Swift J1834.9-0846: Correction to the Swift-BAT refined spectral analysis
  58. Trigger 502024: Swift detection of KS 1741-293
  59. GRB110825A: Fermi GBM observation
  60. SGR Swift J1834.9-0846: Swift-BAT refined analysis of trigger 501752
  61. Swift detection of an SGR burst from Swift J1834.9-0846
  62. GRB 110825A: Suzaku WAM observation of the prompt emission
  63. GRB 110825A: GMG optical observation
  64. GRB110825A: ROTSE early time optical limit
  65. GRB 110827A, Swift-BAT refined analysis
  66. GRB 110825A: optical afterglow candidate
  67. GRB 110827A: Swift detection of a burst
  68. GRB 110825A: field inspection and possible host galaxy
  69. GRB110825A: Swift target of opportunity observation
  70. GRB 110820A, the review of the sky area in plate archives
  71. Swift-BAT Trigger 501485 is noise
  72. Swift-BAT refined analysis of SFXT IGR J08408-4503 (trigger 501368)
  73. Swift J1834.9-0846: Precise X-ray Position and the Confirmation of its Spin Period
  74. IPN triangulation of GRB 110820B (very long duration, extremely intense)
  75. GRB 110820A: Swift/UVOT Upper Limits
  76. GRB 110820A: Position udpate + 2nd epoch data
  77. GRB 110820A: CQUEAN izY Observation
  78. GRB 110820A: Swift-XRT refined Analysis
  79. GRB110820A: MITSuME Ishigakijima Optical Upper Limits
  80. GRB 110820A: Swift-BAT refined analysis
  81. GRB 110820A: Enhanced Swift-XRT position
  82. GRB 110820A: CrAO optical upper limit
  83. GRB 110820A: MASTER-NET observations
  84. GRB 110820A: Swift detection of a burst
  85. GRB 110818A: Fermi GBM observation
  86. GRB 110818A: Swift/UVOT Upper Limits
  87. GRB 110818A: Enhanced Swift-XRT position
  88. GRB 110818A: Optical afterglow and redshift from VLT/X-shooter
  89. GRB 110818A: Swift-XRT refined Analysis
  90. GRB 110815A: Swift-XRT and UVOT refined Analysis
  91. GRB 110818A, Swift-BAT refined analysis
  92. GRB 110815A : Suzaku WAM observation of the prompt emission
  93. GRB 110818A: Swift detection of a burst
  94. GRB 110801A: Konus-Wind and Swift/BAT joint spectral analysis
  95. GRB 110801A: optical observations at Mt. Terskol observatory
  96. GRB 110812A: SuperAGILE localization of a long GRB.
  97. Reprocessed enhanced Swift-XRT positions and GRB products: update
  98. SGR 1834.9-0846/ GRB 110807A, I-band observations
  99. Konus-Wind observation of GRB 110808B
  100. Konus-Wind observation of GRB 110808A

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