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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"

32711 results found.

  1. GRB 110328A / Swift J164449.3+573451: EVLA Detection
  2. GRB 110328B: Fermi-LAT Detection
  3. GRB 110213A, the review of the sky area in plate archives
  4. GRB 110328A / Swift J164449.3+573451: NOT optical observations.
  5. GRB 110328A/ Swift J164449.3+573451 : Xinglong TNT Upper limit
  6. GRB / X-ray transient 110328A: MITSuME OkayamaOptical upper limits
  7. GRB 110328A / Swift J164449.3+573451: PTF Quiescent Optical Counterpart
  8. GRB 110328A: a second trigger, probably a hard X-ray transient (Swift J164449.3+573451)
  9. GRB110318B : MOA optical upper limit
  10. GRB 110319B Swift-XRT afterglow confirmation
  11. GRB 101225A: revised analysis of narrow band imaging
  12. GRB 110319B BAT refined analysis
  13. GRB 110319B: Swift/UVOT Upper Limits
  14. GRB 110318B: Swift/UVOT Upper Limits
  15. GRB 110319B: GROND upper limits
  16. GRB 110319B: Swift-XRT afterglow candidate.
  17. GRB 110319A: Swift/UVOT Detection
  18. GRB 110319A: Swift-BAT refined analysis
  19. GRB 110319A: Swift-XRT refined Analysis
  20. GRB 110318B: GROND upper limits
  21. GRB 110318B: Swift-XRT refined Analysis
  22. GRB 110318A: Fermi GBM detection
  23. GRB 110318B: Swift-BAT refined analysis
  24. GRB 110318A: Swift-BAT refined analysis
  25. GRB 110315A: RTT150 optical observations
  26. GRB 110315A: Swift/UVOT Upper Limits
  27. GRB 110315A: Swift-XRT refined Analysis
  28. GRB 110315A: Swift-BAT refined analysis
  29. GRB 110315A: MASTER early optical observations
  30. GRB110312A: MITSuME Okayama Optical upper limits
  31. GRB 110312A: RTT150 optical observations
  32. GRB 110312A: Swift/UVOT Upper Limits
  33. GRB 110312A: Swift-XRT refined Analysis
  34. GRB 110312A: GROND Upper Limits
  35. GRB 110312A: Swift-BAT refined analysis
  36. GRB 110305A: REM detection of a possible NIR afterglow
  37. GRB 110305A: Swift/UVOT Upper Limits
  38. GRB 110305A: Swift-XRT refined Analysis
  39. GRB 110305A: Swift-BAT refined analysis
  40. GRB 110305A: GROND Detection of Optical Afterglow
  41. GRB 110223A: optical upper limits
  42. GRB101225A: early EVLA Observations of Christmas Burst
  43. Swift/UVOT observations of GRB110223A
  44. No IPN GRB detected in conjunction with candidate GRB 110215
  45. GRB GRB 110223A: MASTER VWF early optical observations
  46. IBAS distribution of coordinates for low significance INTEGRAL GRB triggers
  47. Swift/UVOT observations of GRB110223b
  48. GRB 110223A: Swift-BAT refined analysis
  49. GRB 110223A: Liverpool Telescope observations
  50. GRB 110223A: Swift-XRT refined Analysis
  51. GRB 110223B: Swift-XRT refined Analysis
  52. GRB 110223B: Swift-BAT refined analysis
  53. GRB 110223B: GROND Detection of Optical Afterglow Candidate
  54. GRB 101225A, the review of the sky area in plate archives
  55. GRB 110213B: Swift/UVOT observations
  56. GRB110213B: X-ray afterglow confirmation
  57. Fermi GBM detection of an SGR-like burst
  58. Swift XRT and UVOT Observations of OT 110215
  59. GRB 110213A: optical observations in CrAO
  60. GRB 110213B: GROND observations of the optical/NIR afterglow
  61. GRB 110213A: optical observations in Mondy
  62. GRB110205A: EVLA Observations
  63. Swift/UVOT observations of GRB110210a.
  64. GRB 110210A: optical upper limit
  65. GRB 110213B: Gemini South Redshift
  66. GRB 110213B: Possible Host Galaxy in SDSS Stripe 82 Imaging
  67. GRB 110210A: ROVOR Upper Limit
  68. GRB 110213A: YNAO-GMG Observations
  69. GRB 110213B: P60 Optical Afterglow Candidate
  70. GRB 110213A: TNT optical observations
  71. GRB110213A: RAPTOR Early Optical Peak and Plateau Measurements
  72. GRB 110212A: Swift XRT and UVOT observations
  73. Swift GRB110213A: interesting behaviour
  74. GRB 110213A: Fermi GBM observation
  75. GRB 110205A: Konkoly optical observations
  76. GRB 110213B: Swift XRT observation
  77. GRB 110213A: MITSuME Akeno Optical Observation
  78. Konus-Wind observation of GRB 110213A
  79. Konus-Wind observation of GRB 110213B
  80. GRB 110213A: Swift-XRT refined Analysis
  81. GRB 110213B: MAXI/GSC refined analysis
  82. GRB 110213A: Swift/UVOT refined analysis
  83. GRB 110213A: Lightbuckets Optical Observations
  84. GRB 110213A, Swift-BAT refined analysis
  85. GRB 110213A: optical observations
  86. GRB110212A: MITSuME Okayama optical upper limits
  87. GRB 110213A: KAIT observations
  88. GRB 110213A: GRAS011 optical observations
  89. GRB 110213A: Bok Telescope Redshift
  90. GRB 110213A: ROTSE-III Detection of Optical Counterpart
  91. GRB 110213A: P60 Optical Afterglow Detection
  92. GRB 110212A: GRT Optical Observation
  93. GRB 110212A, Swift-BAT refined analysis
  94. GRB 110212A: SARA-N Optical Limits
  95. GRB 110212A: ROTSE-III Optical Limits
  96. GRB 110201A: Subaru/MOIRCS Ks-band photometry
  97. Konus-Wind observation of GRB 110205A (correction to GCN 11659)
  98. GRB 110205A: detection of optical linear polarization from CAHA
  99. GRB 110207A: Suzaku WAM observation of the prompt emission
  100. GRB 110210A: optical upper limit

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