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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"

23447 results found.

  1. GRB 070611: VLT observations
  2. VLA detection of GRB 070612A in C Band
  3. GRB 070704: Swift-XRT refined analysis
  4. Swift/UVOT Observations of GRB070704
  5. GRB 070704: Correction to GCN Circ 6594
  6. GRB 070704: Swift detection of a burst
  7. GRB 070626: IPN localization and Konus spectrum of a bright long burst
  8. GRB 070628 Swift-UVOT Refined Analysis
  9. GRB 070628: NIR detection of afterglow
  10. GRB 070628: TAROT La Silla observatory optical observations
  11. GRB 070628: Swift XRT refined analysis
  12. GRB 070628: Swift detection of a possible burst
  13. GRB 070612A: Allen Telescope Array Observations
  14. OT20050728 was not an optical GRB afterglow
  15. INTEGRAL burst GRB070615: X-ray continued observations
  16. GRB 070616 : WIDGET simultaneous optical observations
  17. GRB070621: RTT150 optical observations
  18. GRB 070621: VLT optical observations
  19. GRB 070621: Swift/UVOT Upper Limits
  20. Keck Laser Guide Star Adaptive Optics Imaging of GRB 070621
  21. GRB 070621: Swift-BAT refined analysis
  22. GRB 070621: Gemini South optical imaging
  23. GRB 070621: UVOT-enhanced XRT position
  24. Observations of GRB070612A at Calar Alto
  25. GRB 070621: NOT observations
  26. GRB070621: OPTIMA-Burst optical upper limit
  27. GRB 070621: TAROT Calern observatory optical observations
  28. GRB 070621: Watcher Observations
  29. GRB 070621: ROTSE-III Prompt Optical Limits
  30. GRB 070621: Swift detection of a burst
  31. GMRT upper limit of GRB 070610/SWIFT J195509.6+261406 in 610 MHz
  32. GRB 070612A: TNG optical observations
  33. Swift/UVOT detection of GRB070616 optical afterglow.
  34. GRB 070612A: NOT observations
  35. GRB070616: Optical Observation by MITSuME Akeno
  36. GRB 070612B: Optical Observation by MITSuME Akeno
  37. GRB070616: Optical Observation by MITSuME Okayama
  38. GRB 070612A: Possible WSRT Radio Detection
  39. Swift/UVOT observations of GRB070616
  40. GRB 070616: TLS observation
  41. Swift XRT observations of the INTEGRAL burst GRB070615: Possible
  42. GRB 070616: Swift detection of a burst
  43. GRB 070612B: optical observations
  44. UVOT Observations of INTEGRAL burst GRB070615
  45. VLA upper limit on GRB 070610
  46. GRB 070615
  47. SWIFT J195509.6+261406 (GRB 070610): further observations
  48. GRB 070612A: Super-LOTIS observations
  49. GRB 070612A: Rapid Decay
  50. SWIFT J195509.6+261406 / GRB 070610: OPTIMA-Burst observations
  51. GRB070612A: MITSuME Okayama Observation
  52. GRB 070612A: continued SARA observations
  53. GRB 070612A: spectral lag
  54. GRB 070611: Watcher Observations
  55. GRB 070612A: P60 Confirmation of Afterglow and An Underlying, Nearby
  56. GRB 070612B: SARA upper limit
  57. GRB 070612B: Swift-XRT refined analysis
  58. SWIFT J195509.6+261406 / GRB 070610: SWIFT continued observations
  59. GRB 070612B: Swift/UVOT upper limits
  60. GRB 070612B: FRAM limit
  61. GRB070612B: P60 Observations
  62. GRB 070612A: SARA detection of possible OT
  63. GRB 070610: TAROT Calern observatory optical observations
  64. GRB 070610: MITSuME OAO optical upper limit
  65. GRB 070612B: Swift detection of a burst
  66. GRB070612 - SDSS Pre-Burst Observations
  67. GRB 070612: Swift detection of a burst
  68. GRB 070610: OPTIMA-Burst detection of continued strong flaring activity
  69. GRB 070610: SARA upper limit
  70. GRB 070610: Swift-XRT refined analysis
  71. GRB 070610: TLS RRM sees flaring behaviour - Galactic transient?
  72. GRB 070611: Swift/UVOT Observations
  73. GRB 070611: Swift-XRT refined analysis
  74. GRB 070610: Optical observations from OSN
  75. GRB 070610: Watcher Observations
  76. GRB 070611: ROTSE-III Optical Limits
  77. GRB 070611: Swift detection of a burst
  78. GRB 070610: Swift-UVOT Upper Limits
  79. GRB 070610: OPTIMA-Burst high-time-resolution optical observations
  80. GRB 070610: Swift detection of a burst
  81. GRB 070412: TAROT Calern observatory optical observations
  82. GRB 070411: TAROT Calern observatory optical observations
  83. Swift/UVOT refined analysis of GRB070531
  84. GRB 070531: NOT nIR observations
  85. GRB 070531: I-band observations from IAC80
  86. GRB 070531: Liverpool Telescope Optical Observations
  87. GRB 070531: Swift detection of a burst
  88. GRB 070529: SARA upper limit
  89. Swift/UVOT refined analysis of GRB070529
  90. GRB 070529: Optical aterglow from MIRO
  91. GRB 070529: Swift-XRT refined analysis
  92. GRB 070529, Swift-BAT refined analysis
  93. GRB 070529: Xinglong TNT Optical Upper Limit
  94. GRB 070529: Swift detection of a burst with an optical aterglow
  95. GRB 070412: Deep Keck imaging
  96. Swift trigger 280447 is probably a Galactic transient
  97. GRB070521: Second Epoch Gemini Imaging
  98. GRB 070521: Swift/UVOT Upper Limits
  99. GRB 070521, optical observation
  100. GRB 070521: Swift-XRT refined analysis

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