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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"

15359 results found.

  1. GRB 071010B: Optical observations of EST
  2. GRB 071011: MITSuME Optical Observations
  3. GRB 071010B: Photometry after 1.6 days
  4. GRB 071010B: Keck/LRIS Photometry
  5. GRB071010B, BVRcIc field calibration
  6. GRB 071011: Optical Limit after 13.95hrs
  7. GRB 071011: Xinglong TNT Optical afterglow observations
  8. GRB 071010B correction to GCN 6892 optical observations
  9. GRB 071011: Swift-XRT refined analysis
  10. GRB 071011: NAYUTA Optical Observation, correction to GCN6886
  11. GRB 071011, Optical afterglow
  12. GRB 071011: Confirmation of P60 optical afterglow
  13. GRB 071010B: Optical Detection
  14. GRB 071011: Kanazawa Optical limits
  15. GRB 071011: P60 Optical Afterglow Candidate
  16. GRB 071010B optical photometry
  17. GRB 071011: XRT afterglow detection
  18. GRB 071010B: Gemini Spectroscopic Observations
  19. GRB 071011: Early Super-LOTIS Observations
  20. GRB 071011: NAYUTA Optical Observation
  21. GRB 071010B: Bright OT confirmed with TLS
  22. Optical Observation: GRB 071010
  23. Optical observations: GRB 071010A
  24. Konus-Wind observation of GRB 071010B
  25. GRB071010B: Swift/XRT detection
  26. GRB 071010A: bright NIR afterglow
  27. GRB 071010B possible optical transient
  28. GRB 071010A: Keck/LRIS Photometry
  29. Konus-Wind observation of GRB 071006
  30. GRB 071010 REM NIR observations
  31. Konus-Wind observation of GRB 071003
  32. GRB 071003: Possible rebrightening
  33. GRB 071003: Swift XRT position
  34. GRB 071003: OA power-law decay indices from KAIT
  35. GRB 071003: Keck HIRES spectroscopy
  36. GRB 071003 Optical observations
  37. GRB 071003: P60 Confirmation of Optical Afterglow
  38. GRB 070714B: host galaxy spectroscopic redshift
  39. GRB 070925: a long GRB detected by INTEGRAL
  40. GRB 070917: Suzaku/WAM observation of the prompt emission
  41. GRB 070920B: TAROT La Silla observatory optical observations
  42. INTEGRAL ToO observations of SGR1806-20
  43. GRB 070911: Swift/BAT and Suzaku/WAM joint spectral analysis
  44. GRB 070920B: NOT optical observations
  45. SGR1806-20: Swift-BAT detection of enhanced activity
  46. GRB070917: Confirmation of optical afterglow
  47. Konus-Wind observation of GRB 070917
  48. GRB 070911: Suzaku WAM observation of the prompt emission
  49. GRB 070913: Swift-XRT detection of the possible X-ray afterglow
  50. GRB 070809: Confirmation of optical transient
  51. Observations of possible TAROT GRB transient near IC 4779
  52. GRB 070810b: Image Subtraction of Multiple Keck Observations
  53. Orphan GRB candidate in IC 4779 at TAROT La Silla observatory
  54. Konus-Wind observation of GRB 070824
  55. Konus-Wind observation of very bright GRB 070821
  56. GRB 070810A: ROTSE-III Refined Analysis
  57. GRB 061110A: redshift confirmed
  58. GRB 070810B : Faulkes Telescope South Observations
  59. GRB 070810A: Continued Keck Imaging
  60. GRB 070810B: Keck spectroscopy of possible host galaxies
  61. GRB 070809: Swift/UVOT Corrected Photometry
  62. A giant outburst from Cygnus X-1 detected by Konus-Wind and Suzaku-WAM
  63. GRB 070809: Keck Imaging
  64. GRB 070809: Swift-XRT refined analysis
  65. GRB 070810: Swift/UVOT Optical Counterpart
  66. GRB070808 - SDSS Pre-Burst Observations
  67. GRB 070721B: correct afterglow position
  68. Swift detection of a outburst from SAX J1810.8-2609
  69. GRB 070802: REM optical observations
  70. GRB 070802: Confirmation of the optical afterglow
  71. GRB 070802: V-band detection of the candidate afterglow
  72. Konus-A observation of GRB 070729
  73. Swift/UVOT detection of GRB070714B
  74. GRB 070721A: optical observations
  75. GRB 070724A: further VLT observations
  76. GRB 070724B: Suzaku WAM observation of the prompt emission
  77. Konus-Wind observation of GRB 070724B
  78. GRB 070724B: Analysis of AGILE gamma-ray data
  79. GRB 070724b: First Gamma Ray Burst Localization by SuperAGILE onboard
  80. GRB 070724: optical observations
  81. GRB 060814 - Keck host detection and redshift
  82. GRB 070721B: further observations and analysis
  83. GRB 070326: Detection of first burst from BAT Slew Survey (BATSS)
  84. GRB 070714B: Keck observations
  85. GRB 070721B, Further Swift-BAT refined analysis
  86. GRB 070721B : Faulkes Telescope South observations
  87. GRB 070721B: Swift-XRT refined analysis
  88. GRB 070721A: Swift/XRT refined analysis
  89. GRB 070714B: Swift/BAT and Suzaku/WAM joint spectral analysis
  90. GRB 070714B : Suzaku WAM observation of the prompt emission
  91. GRB070714B: TNG NIR observations
  92. GRB 070707: Swift-XRT follow-up observations
  93. GRB 070714b ("Bastille"): Optical Pre-Imaging (Clarification)
  94. GRB 070704: Suzaku/WAM observation of the prompt emission
  95. Konus-Wind observation of GRB 070707
  96. GRB 070707: optical afterglow
  97. Swift XRT observation of GRB 070707
  98. Konus-Wind observation of GRB 070626
  99. GRB 070704: Swift-XRT refined analysis
  100. GRB 070626: Suzaku/WAM observation of the prompt emission

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