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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"

18512 results found.

  1. GRB 110328A: Konkoly observations.
  2. GRB 110402A: early optical limit by "Pi of the Sky"
  3. GRB 110402A: further NOT observations
  4. GRB110328A/Swift J164449.3+573451: Fermi LAT Observations
  5. GRB 110402A: PAIRITEL NIR Upper Limits
  6. GRB 110402A: Enhanced Swift-XRT position
  7. GRB 110402A: NOT afterglow confirmation
  8. GRB 110402A: Swift detection of a burst
  9. GRB 110328A / Swift J164449.3+573451: Radio-optical/NIR Astrometry
  10. GRB 110328A / Swift J164449.3+573451: Mondy optical observations
  11. GRB 110328A / Swift J164449.3+573451: KASINICS K-band Observation
  12. GRB 110328A / Swift J164449.3+573451: X-ray analysis and a mini-blazar analogy
  13. GRB 110328A / Swift J164449.3+573451: PAIRITEL NIR Detection in 2nd Epoch
  14. GRB 110328A / Swift J164449.3+573451: No optical variability of the optical counterpart
  15. GRB 110328A / Swift J164449.3+573451: Konkoly observations
  16. GRB 110328A / Swift J164449.3+573451: LOAO R-band Observation
  17. GRB 110328A / Swift J164449.3+573451: PAIRITEL NIR Upper Limits
  18. GRB 110328A / Swift J164449.3+573451: optical observations
  19. GRB 110328A / Swift J164449.3+573451: optical spectroscopy from GTC
  20. GRB 110328A / Swift J164449.3+573451: NOT optical observations.
  21. GRB / X-ray transient 110328A: MITSuME OkayamaOptical upper limits
  22. GRB 110328A / Swift J164449.3+573451: PTF Quiescent Optical Counterpart
  23. GRB 110328A: Enhanced Swift-XRT position
  24. GRB 110328A: Swift detection of a burst
  25. GRB 110319B Swift-XRT afterglow confirmation
  26. GRB 110319B: Swift/UVOT Upper Limits
  27. GRB 110318B: Swift/UVOT Upper Limits
  28. GRB 110319B: GROND upper limits
  29. GRB 110319B: Swift-XRT afterglow candidate.
  30. GRB 110319B found in ground analysis of Swift-BAT data
  31. GRB 110319A: Swift/UVOT Detection
  32. GRB 110318B: GROND upper limits
  33. GRB 110319A: Enhanced Swift-XRT position
  34. GRB 110319A: Swift detection of a burst
  35. GRB 110318B: Enhanced Swift-XRT position
  36. GRB 110318B: Swift/UVOT Non-Detection of an Afterglow
  37. GRB 110318B: Swift detection of a burst
  38. GRB 110315A: RTT150 optical observations
  39. GRB 110315A: Swift/UVOT Upper Limits
  40. GRB 110315A: Enhanced Swift-XRT position
  41. GRB 110315A: Swift detection of a burst
  42. GRB110312A: MITSuME Okayama Optical upper limits
  43. GRB 110312A: RTT150 optical observations
  44. GRB 110312A: Swift/UVOT Upper Limits
  45. GRB 110312A: Swift-XRT refined Analysis
  46. GRB 110312A: GROND Upper Limits
  47. GRB 110312A: Enhanced Swift-XRT position
  48. GRB 110312A: Swift detection of a burst
  49. GRB 110305A: REM detection of a possible NIR afterglow
  50. GRB110305A: MITSuME Ishigakijima Optical upper limits
  51. GRB 110305A: Swift/UVOT Upper Limits
  52. GRB 110305A: Enhanced Swift-XRT position
  53. GRB 110305A: GROND Detection of Optical Afterglow
  54. GRB 110305A: Swift detection of a burst
  55. GRB 110223A: optical upper limits
  56. Swift/UVOT observations of GRB110223A
  57. No IPN GRB detected in conjunction with candidate GRB 110215
  58. IBAS distribution of coordinates for low significance INTEGRAL GRB triggers
  59. Swift/UVOT observations of GRB110223b
  60. GRB 110223A : early optical limit by "Pi of the Sky"
  61. GRB 110223B: Swift-XRT refined Analysis
  62. GRB 110223A: Enhanced Swift-XRT position
  63. GRB 110223B: Enhanced Swift-XRT position
  64. GRB 110223B: GROND Detection of Optical Afterglow Candidate
  65. GRB 110223B: Swift detection of a burst
  66. GRB 110223A: Swift detection of a burst
  67. OT 110215: Further NIR observations from NOT of the GRB candidate
  68. GRB 110213B: Swift/UVOT observations
  69. Swift XRT and UVOT Observations of OT 110215
  70. OT 110215: NIR observations from NOT of GRB candidate
  71. GRB 110213A: optical observations in CrAO
  72. GRB 110213B: GROND observations of the optical/NIR afterglow
  73. OT 110215: possible GRB from 2MASS J00264184+8324093
  74. Swift/UVOT observations of GRB110210a.
  75. GRB 110210A: optical upper limit
  76. GRB 110210A: ROVOR Upper Limit
  77. GRB110213A: RAPTOR Early Optical Peak and Plateau Measurements
  78. GRB 110212A: Swift XRT and UVOT observations
  79. GRB 110205A: Konkoly optical observations
  80. GRB 110213B: Swift XRT observation
  81. GRB 110213A: MITSuME Akeno Optical Observation
  82. GRB110213A: MITSuME Okayama Optical Observation
  83. GRB 110213A: Swift/UVOT refined analysis
  84. GRB 110213A: optical observations
  85. GRB 110213A: Enhanced Swift-XRT position
  86. GRB110212A: MITSuME Okayama optical upper limits
  87. GRB 110213A: P60 Optical Afterglow Detection
  88. GRB 110213A: Swift detection of a burst with optical afterglow
  89. GRB 110212A: GRT Optical Observation
  90. GRB 110212A: SARA-N Optical Limits
  91. GRB 110201A: Subaru/MOIRCS Ks-band photometry
  92. GRB 110205A: detection of optical linear polarization from CAHA
  93. GRB 110210A: Swift-XRT refined Analysis
  94. GRB 110210A: Enhanced Swift-XRT position
  95. GRB 110201A: optical observations
  96. GRB 110210A: Swift detection of a burst
  97. Fermi GBM detection of a burst from 1E 1841-045
  98. Swift/UVOT observations of GRB110208a
  99. GRB 110207A: Swift-XRT observations
  100. GRB 110208A: Swift-XRT refined Analysis

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