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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.

Advanced Search Examples (click to copy):

subject:"Swift"
body:"GRB"
submitter:"Judith Racusin"

19290 results found.

  1. GRB060807 - SDSS Pre-burst Observations
  2. GRB 060805B: X-ray Afterglow Detection, Spectral/Spatial/Temporal Properties
  3. GRB 060807: Swift detection of a burst
  4. GRB060805 Liverpool Telescope observations
  5. GRB 060805: XRT Team Refined Analysis
  6. GRB 060805: Swift-BAT Refined Analysis
  7. GRB 060805: Swift/UVOT Upper Limits
  8. GRB 060805 - SDSS Pre-Burst Observations
  9. GRB 060804: Swift-XRT Team Refined Analysis
  10. GRB 060804: Refined analysis of the Swift-BAT burst
  11. GRB 060804: Swift detection of a burst with a possible UVOT counterpart
  12. GRB 060728: Upper limits of the X-ray emission
  13. GRB 060801: no variability of optical sources
  14. GRB 060801: optical observations at Hanle and Calar Alto
  15. GRB060801: optical upper limit in R
  16. GRB 060801: Refined analysis of the Swift-BAT short hard burst
  17. GRB 060801, optical observation
  18. GRB 060719: TORTOREM optical upper limits
  19. GRB 060729: Swift/UVOT Detections
  20. GRB 060729: Refined analysis of the Swift-BAT burst
  21. GRB 060729: Swift-XRT refined analysis
  22. GRB 060729: Swift/UVOT Observations
  23. GRB 060729: Swift detection of a burst with an UVOT optical counterpart
  24. Swift/XRT preliminary analysis
  25. GRB 060719: correction to the coordinates reported in GCN 5347
  26. GRB 060719: VLT/ISAAC observations
  27. GRB 060719: Refined analysis of the Swift-BAT burst
  28. GRB 060719: XRT refined analysis
  29. GRB 060719: further analysis of VLT observations
  30. GRB 060719: Swift detection of a burst
  31. GRB 060717: Swift XRT refined analysis
  32. GRB 060714: Refined analysis of the Swift-BAT burst
  33. GRB 060717: Swift-BAT refined analysis
  34. GRB 060714: Swift XRT refined analysis
  35. GRB 060714: Swift detection of a burst with an UVOT optical afterglow
  36. GRB 060712: XRT refined analysis
  37. GRB060526: optical observations
  38. GRB 060712: Refined analysis of the Swift-BAT burst
  39. Host galaxy of GRB050904: 250 GHz upper limit with MAMBO at the IRAM 30m
  40. GRB 060708: Swift-XRT refined analysis
  41. GCN 060708: Swift-UVOT Observations
  42. GRB 060708: Refined analysis of the Swift-BAT burst
  43. GCN 060707: Swift-UVOT observations
  44. GRB 060707: Swift-XRT refined analysis
  45. GRB 060708: Swift detection of a burst with an UVOT countpart
  46. GRB 060707: Refined analysis of the Swift-BAT burst
  47. GRB 060707: BOOTES-IR optical observation
  48. GRB 060515: Upper Limit on Host Galaxy
  49. GRB 050223: Magellan redshift
  50. GRB 060614: SMARTS host galaxy observations
  51. GRB 060614: Detection of a Possible, Late-Time Rebrightening
  52. GRB 060614: Redshift
  53. GRB050326: Host Galaxy Candidates
  54. Konus-Wind observation of GRB 060614
  55. GRB 060614: optical observations
  56. GRB 060614: Swift-BAT refined analysis
  57. GRB060614: Swift-XRT refined analysis
  58. GRB 060614: Swift detection of a burst with a bright optical and X-ray counterpart
  59. BAT Trigger #214277 is SGR 1900+14
  60. GRB 060610: KAIT observations
  61. GRB 060607B: Swift-BAT Refined Analysis
  62. GCN 060607: Swift-UVOT obswervations.
  63. GRB 060607: Swift-BAT Refined Analysis
  64. GRB 060607: Swift-XRT Team refined analysis
  65. GRB 060502B: A Bright Early-type Galaxy as Putative Host of the Short Burst
  66. VLT/UVES observations of GRB 060607
  67. GRB 060607: Swift detection of a burst with bright optical counterpart
  68. GRB 060522: PROMPT Optical Limits
  69. GRB 060605 BAT refined analysis
  70. GRB060605: Swift/UVOT detections
  71. GRB 060605: Swift-XRT Team refined analysis
  72. GRB 060605: RTT150 optical observations
  73. GRB 060605: Swift detection of a burst with optical counterpart
  74. GRB 060604: Swift-XRT Team refined analysis
  75. GRB 060604: BAT refined analysis
  76. GRB 060604: Swift detection of a burst with possible optical counterpart
  77. GRB 060602A: Swift-BAT Refined Analysis: Correction
  78. GRB 060602B: XMM-Newton Survey Source
  79. GRB 060602B: Swift-XRT Refined Analysis
  80. GRB 060602B: Swift-BAT Refined Analysis
  81. GRB 060602A: Swift-BAT Refined Analysis
  82. GRB 060602B: RTT150 optical observations
  83. GRB 060211A : WIDGET simultaneous optical observations
  84. GRB 060602B: Swift detection of a burst
  85. GRB060602B: BOOTES-IR candidate afterglow
  86. GRB060602 - SDSS Pre-Burst Observations
  87. GRB 060526: Break in X-ray light curve
  88. GRB060526, optical observations
  89. GRB 051227 : WIDGET simultaneous optical observations
  90. GRB 051028 : WIDGET pre-trigger limit
  91. GRB060526: Optical counterpart from MIRO
  92. GRB 060526: MDM-2.4m Observations
  93. GRB 060526: Refined analysis of the Swift-BAT burst
  94. GRB 060526: Swift/XRT Team refined analysis
  95. GRB 060526: ROTSE-III Observations of Optical Counterpart
  96. GRB060526 - SDSS Pre-burst Observations
  97. GRB 060526: Swift detection of a burst with x-ray and optical afterglow
  98. GRB 060413 : WIDGET simultaneous optical observations
  99. XMM-Newton observation of GRB060510b
  100. GRB 060522: Swift-BAT Refined Analysis

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