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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"

19686 results found.

  1. GRB 110503A: Millimeter observation from SMA
  2. GRB 110503A: SARA-N Observations and Photometric Calibration
  3. GRB 110503A: Swift/UVOT Observations
  4. GRB 110503A: PAIRITEL NIR Detection
  5. GRB 110503A: Enhanced Swift-XRT position
  6. GRB 110503A: Swift detection of a burst with a bright optical counterpart
  7. GRB 110426A: Swift/XRT non-detection
  8. GRB 110428A : X-ray afterglow confirmation
  9. GRB 110422A: optical observations in CrAO
  10. GRB 110428A : Swift-XRT observations
  11. GRB 110426A: MASTER synchronous with MAXI/GSC observations
  12. GRB 110422A: optical observations in CrAO, second epoch
  13. GRB110422A: NOT optical follow-ups
  14. GRB 110422A: optical observations in CrAO
  15. GRB110422A: MITSuME Ishigakijima Optical Observation
  16. GRB 110422A: Further NOT observation
  17. GRB 110422A: Swift/UVOT Detection of optical afterglow
  18. GRB 110422A: Enhanced Swift-XRT position
  19. GRB 110422A: TNG optical observations
  20. GRB 110422A: SAO RAS optical observations
  21. GRB 110422A: NOT optical observation
  22. GRB 110422A: Swift-BAT refined analysis
  23. GRB 110422A: Mondy optical observations
  24. GRB 110422A: Swift detection of a burst
  25. GRB 110420B: Swift/UVOT Upper Limits
  26. GRB110420A: GROND detection of the Optical/NIR Afterglow Candidate
  27. GRB 110420B: Swift-XRT afterglow candidate retraction
  28. GRB 110420B, GROND observations
  29. GRB 110420A Swift/UVOT Observations
  30. GRB 110420B: Swift-BAT refined analysis
  31. GRB 110420A: Swift-BAT refined analysis
  32. GRB 110420A: Enhanced Swift-XRT position
  33. GRB 110420A: Swift detection of a burst with optical counterpart
  34. GRB110414A: MITSuME Ishigakijima Optical upper limits
  35. GRB 110414A: GROND upper limits
  36. GRB110414A: MITSuME Okayama Optical upper limits
  37. GRB 110414A: Swift/UVOT Upper limits
  38. GRB 110414A: Enhanced Swift-XRT position
  39. GRB 110328A / Swift J164449.3+573451: WISE quiescent source upper limit
  40. GRB 110414A: Swift detection of a burst
  41. GRB 110411A: PAIRITEL NIR Upper Limits
  42. GRB 110411A: Swift-XRT refined Analysis
  43. GRB 110411A: Swift/UVOT Upper Limits
  44. GRB 110411A: Enhanced Swift-XRT position
  45. GRB 110411A: Swift detection of a burst
  46. GRB 110328A/Swift J164449.3+573451 UVOT Upper Limits
  47. GRB110407A: UVOT Upper Limits
  48. GRB 110407A: GROND Detection of the Optical Afterglow
  49. GRB 110407A: MITSuME Okayama and Ishigakijima Optical upper limits
  50. GRB 110407A: NOT optical observations
  51. GRB 110407A: Enhanced Swift-XRT position
  52. IPN triangulation of the bright GRB110406A
  53. GRB 110407A: Swift detection of a burst
  54. Konus-Wind observation of GRB 110406A
  55. GRB 110328A/Swift J164449.3+573451: BAT recent rate increase and pre-outburst,light curve
  56. GRB 110402A: fading optical afterglow
  57. GRB 110328A / Swift J164449.3+573451, HST Observations
  58. GRB 110402A: Konus-Wind spectral lags and detailed energetics
  59. GRB 110402A: optical observations in Mondy
  60. GRB 110402A: MITSuME Okayama and Ishigakijima Optical upper limits
  61. GRB 110328A/Swift J164449.3+573451: SARA-N detection
  62. GRB 110402A: Swift/UVOT detection of afterglow candidate
  63. GRB 110402A: Konkoly observations
  64. GRB 110328A: Konkoly observations.
  65. GRB 110402A: early optical limit by "Pi of the Sky"
  66. GRB 110402A: further NOT observations
  67. GRB110328A/Swift J164449.3+573451: Fermi LAT Observations
  68. GRB 110402A: PAIRITEL NIR Upper Limits
  69. GRB 110402A: Enhanced Swift-XRT position
  70. GRB 110402A: NOT afterglow confirmation
  71. GRB 110402A: Swift detection of a burst
  72. GRB 110328A / Swift J164449.3+573451: Radio-optical/NIR Astrometry
  73. GRB 110328A / Swift J164449.3+573451: Mondy optical observations
  74. GRB 110328A / Swift J164449.3+573451: KASINICS K-band Observation
  75. GRB 110328A / Swift J164449.3+573451: X-ray analysis and a mini-blazar analogy
  76. GRB 110328A / Swift J164449.3+573451: PAIRITEL NIR Detection in 2nd Epoch
  77. GRB 110328A / Swift J164449.3+573451: No optical variability of the optical counterpart
  78. GRB 110328A / Swift J164449.3+573451: beamed emission
  79. GRB 110328A / Swift J164449.3+573451: Konkoly observations
  80. GRB 110328A / Swift J164449.3+573451: LOAO R-band Observation
  81. GRB 110328A / Swift J164449.3+573451: PAIRITEL NIR Upper Limits
  82. GRB 110328A / Swift J164449.3+573451: optical observations
  83. GRB 110328A / Swift J164449.3+573451: optical spectroscopy from GTC
  84. GRB 110213A, the review of the sky area in plate archives
  85. GRB 110328A / Swift J164449.3+573451: NOT optical observations.
  86. GRB / X-ray transient 110328A: MITSuME OkayamaOptical upper limits
  87. GRB 110328A / Swift J164449.3+573451: PTF Quiescent Optical Counterpart
  88. GRB 110328A: Enhanced Swift-XRT position
  89. GRB 110328A: Swift detection of a burst
  90. GRB 110319B Swift-XRT afterglow confirmation
  91. GRB 110319B: Swift/UVOT Upper Limits
  92. GRB 110318B: Swift/UVOT Upper Limits
  93. GRB 110319B: GROND upper limits
  94. GRB 110319B: Swift-XRT afterglow candidate.
  95. GRB 110319B found in ground analysis of Swift-BAT data
  96. GRB 110319A: Swift/UVOT Detection
  97. GRB 110318B: GROND upper limits
  98. GRB 110319A: Enhanced Swift-XRT position
  99. GRB 110319A: Swift detection of a burst
  100. GRB 110318A: Fermi GBM detection

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