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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"

24465 results found.

  1. GRB 110503A: redshift confirmation from TNG
  2. GRB 110503A: Swift-BAT refined analysis
  3. GRB 110428A: Suzaku WAM observation of the prompt emission
  4. Fermi-GBM data processing and delivery
  5. GRB 110422A: Update of Herschel FIR observation schedule
  6. Konus-Wind observation of GRB 110428A
  7. GRB 110428A: Fermi-LAT Detection
  8. GRB 110426A: MASTER synchronous with MAXI/GSC observations
  9. GRB 110422A: Suzaku WAM observation of the prompt emission
  10. GRB 110422A: Herschel observation scheduled
  11. GRB110422A: NOT optical follow-ups
  12. GRB110422A: MITSuME Ishigakijima Optical Observation
  13. Konus-Wind observation of GRB 110422A
  14. GRB 110422A: Further NOT observation
  15. GRB 110422A: THO optical observations
  16. GRB 110422A: NOT optical observation
  17. GRB 110422A: MASTER earlier OT polarization observations
  18. GRB 110422A: Swift-BAT refined analysis
  19. GRB 110420B: Fermi GBM observation
  20. Konus-Wind observation of GRB 110420A
  21. GRB 110420B: Swift-XRT afterglow candidate
  22. GRB 110420B: Swift-BAT refined analysis
  23. GRB 110420A: Swift-BAT refined analysis
  24. GRB 110420B: Swift detection of a short hard burst
  25. GRB 110420A: Swift detection of a burst with optical counterpart
  26. GRB110414A: MITSuME Ishigakijima Optical upper limits
  27. GRB110414A: MITSuME Okayama Optical upper limits
  28. GRB 110414A: Swift-BAT Refined Analysis
  29. GRB 110414A: Swift-XRT refined Analysis
  30. GRB 110414A : Faulkes Telescope North observations
  31. GRB 110414A: Swift detection of a burst
  32. GRB 110411A: PAIRITEL NIR Upper Limits
  33. GRB 110412A: Swift-BAT refined analysis
  34. GRB 110411A: optical limits from OSN
  35. GRB 110412A: Fermi GBM observation
  36. GRB 110411A: MASTER prompt and follow-up optical limits
  37. GRB 110411A : Xinglong TNT OT candidate
  38. GRB 110412A: Swift detection of a burst
  39. GRB 110411A, Swift-BAT refined analysis
  40. GRB 110411A: MASTER optical observations
  41. GRB 110328A / Swift J164449.3+573451: MASTER pre, prompt and follow-up observations
  42. GRB 110328A / Swift J164449.3+573451: optical observations
  43. GRB 110407A: SMARTS optical limit
  44. GRB 110407A: MASTER optical observations
  45. GRB 110407A: GROND Detection of the Optical Afterglow
  46. GRB 110407A: MITSuME Okayama and Ishigakijima Optical upper limits
  47. GRB 110407A: NOT optical observations
  48. GRB 110407A: Swift-BAT refined analysis
  49. GRB 110407A : Lulin optical afterglow detection
  50. GRB 110407A : Xinglong TNT upper limit
  51. GRB 110407A: MASTER early optical observations
  52. Konus-Wind observation of GRB 110406A
  53. GRB 110328A/Swift J164449.3+573451: BAT recent rate increase and pre-outburst,light curve
  54. GRB 110402A: Suzaku WAM observation of the prompt emission
  55. GRB 110402A: LOAO Optical Observation
  56. ICSP VLF observation of multiple SGR-like bursts from 1E 1841-045 on Feb. 9, 2011
  57. Comparison of ICSP VLF observation of GRB 090424 with satellite observations
  58. GRB 110401A: Fermi GBM detection
  59. GRB 110402A: Fermi GBM detection
  60. GRB 110402A: MITSuME Okayama and Ishigakijima Optical upper limits
  61. Konus-Wind observation of GRB 110402A
  62. GRB 110402A: Konkoly observations
  63. GRB 110402A: Swift-BAT refined analysis
  64. GRB 110402A: Swift-XRT refined Analysis
  65. GRB 110402A: early optical limit by "Pi of the Sky"
  66. GRB110328A/Swift J164449.3+573451: Fermi LAT Observations
  67. GRB 110402A: PAIRITEL NIR Upper Limits
  68. GRB 110402A: Liverpool Telescope Observations
  69. GRB 110328A / Swift J164449.3+57345: Correction to GCN 11850
  70. GRB 110328A / Swift J164449.3+573451: Infrared transient
  71. GRB 110328A / Swift J164449.3+573451: Mondy optical observations
  72. GRB 110328/Swift J164449.3+573451: Fermi observations
  73. GRB 110328A / Swift J164449.3+573451: KASINICS K-band Observation
  74. GRB 110328A / Swift J164449.3+573451
  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: BAT refined analysis
  80. GRB 110328A / Swift J164449.3+573451: Konkoly observations
  81. GRB 110328A / Swift J164449.3+573451: LOAO R-band Observation
  82. GRB 110328A / Swift J164449.3+573451: PAIRITEL NIR Upper Limits
  83. GRB 110328B: Fermi-LAT Detection
  84. GRB 110328B: Fermi GBM detection
  85. GRB 110328A/ Swift J164449.3+573451 : Xinglong TNT Upper limit
  86. GRB / X-ray transient 110328A: MITSuME OkayamaOptical upper limits
  87. GRB 110328A / Swift J164449.3+573451: PTF Quiescent Optical Counterpart
  88. GRB / X-ray transient 110328A: Gemini optical observations
  89. GRB 110328A: a second trigger, probably a hard X-ray transient (Swift J164449.3+573451)
  90. GRB 101225A: revised analysis of narrow band imaging
  91. GRB 110319B BAT refined analysis
  92. GRB 110319B: GROND upper limits
  93. GRB 110319B: Swift-XRT afterglow candidate.
  94. GRB 110319B found in ground analysis of Swift-BAT data
  95. GRB 110319A: Swift-BAT refined analysis
  96. GRB 110318B: GROND upper limits
  97. GRB 110318A: Fermi GBM detection
  98. GRB 110318B: Swift-BAT refined analysis
  99. GRB 110318A: Swift-BAT refined analysis
  100. GRB 110318A: Swift detection of a burst

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