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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"

15387 results found.

  1. GRB 110407A: MITSuME Okayama and Ishigakijima Optical upper limits
  2. GRB 100407A : Errata of afterglow position in GCN 11899
  3. GRB 110407A : Lulin optical afterglow detection
  4. Konus-Wind observation of GRB 110406A
  5. GRB 110328A/Swift J164449.3+573451: BAT recent rate increase and pre-outburst,light curve
  6. GRB 110406A: An exceptionally bright burst detected by INTEGRAL SPI-ACS
  7. GRB 110402A: Suzaku WAM observation of the prompt emission
  8. GRB 110328/Swift J164449.3+573451: Chandra observations
  9. GRB 110402A: LOAO Optical Observation
  10. GRB 110402A: Konus-Wind spectral lags and detailed energetics
  11. GRB 110402A: Fermi GBM detection
  12. GRB 110402A: optical observations in Mondy
  13. GRB 110328A / Swift J164449.3+573451: Keck/DEIMOS Optical Spectroscopy
  14. GRB 110402A: MITSuME Okayama and Ishigakijima Optical upper limits
  15. Konus-Wind observation of GRB 110402A
  16. GRB 110328A: Konkoly observations.
  17. GRB110328A/Swift J164449.3+573451: Fermi LAT Observations
  18. GRB 110402A: PAIRITEL NIR Upper Limits
  19. GRB 110402A: NOT afterglow confirmation
  20. GRB 110328A / Swift J164449.3+573451: KASINICS NIR Observation
  21. GRB 110328A / Swift J164449.3+57345: Correction to GCN 11850
  22. GRB 110328/Swift J164449.3+573451: Fermi observations
  23. GRB 110328A / Swift J164449.3+573451: KASINICS K-band Observation
  24. GRB 110328A / Swift J164449.3+573451
  25. GRB 110328A / Swift J164449.3+573451: X-ray analysis and a mini-blazar analogy
  26. GRB 110328A / Swift J164449.3+573451: Gemini and UKIRT IR observations
  27. GRB 110328A / Swift J164449.3+573451: PAIRITEL NIR Detection in 2nd Epoch
  28. GRB 110328A / Swift J164449.3+573451: No optical variability of the optical counterpart
  29. GRB 110328A / Swift J164449.3+573451: BAT refined analysis
  30. GRB 110328A / Swift J164449.3+573451: Konkoly observations
  31. GRB 110328A / Swift J164449.3+573451: PAIRITEL NIR Upper Limits
  32. GRB 110328B: Fermi-LAT Detection
  33. GRB 110328A / Swift J164449.3+573451: optical spectroscopy from GTC
  34. GRB 110328B: Fermi GBM detection
  35. GRB 110328A / Swift J164449.3+573451: NOT optical observations.
  36. GRB 110328A / Swift J164449.3+573451: PTF Quiescent Optical Counterpart
  37. GRB 110328A: a second trigger, probably a hard X-ray transient (Swift J164449.3+573451)
  38. GRB 110319B Swift-XRT afterglow confirmation
  39. GRB 101225A: revised analysis of narrow band imaging
  40. GRB 110318A: Fermi GBM detection
  41. GRB 110305A: REM detection of a possible NIR afterglow
  42. GRB110305A: MITSuME Ishigakijima Optical upper limits
  43. GRB 110305A: GROND Detection of Optical Afterglow
  44. GRB 110223A: optical upper limits
  45. No IPN GRB detected in conjunction with candidate GRB 110215
  46. IBAS distribution of coordinates for low significance INTEGRAL GRB triggers
  47. GRB 110223B: GROND Detection of Optical Afterglow Candidate
  48. GRB110213B: X-ray afterglow confirmation
  49. Fermi GBM detection of an SGR-like burst
  50. Swift XRT and UVOT Observations of OT 110215
  51. GRB 110213B: GROND observations of the optical/NIR afterglow
  52. GRB 110213B: Gemini South Redshift
  53. GRB 110213B: P60 Optical Afterglow Candidate
  54. GRB110213A: RAPTOR Early Optical Peak and Plateau Measurements
  55. GRB 110213A: Fermi GBM observation
  56. GRB 110213B: Swift XRT observation
  57. GRB 110213A: MITSuME Akeno Optical Observation
  58. Konus-Wind observation of GRB 110213A
  59. GRB110213A: MITSuME Okayama Optical Observation
  60. GRB 110213A: Swift/UVOT refined analysis
  61. GRB 110213A: KAIT observations
  62. Konus-Wind observation of GRB 110205A (correction to GCN 11659)
  63. GRB 110207A: Suzaku WAM observation of the prompt emission
  64. GRB 110210A: optical upper limit
  65. GRB 110205A: Swift/BAT and Suzaku/WAM joint spectral analysis
  66. GRB 110206A: Swift-XRT confirmation of the X-ray afterglow
  67. GRB 110205A: Suzaku WAM observation of the prompt emission
  68. GRB 110205A: optical observations in Mondy observatory
  69. GRB 110207A: Fermi GBM observation
  70. GRB 110205A - Continued PAIRITEL NIR Observations
  71. GRB 110207A: MASTER prompt and early optical observations
  72. Konus-Wind observation of GRB 110205A
  73. GRB110205A: MITSuME Ishigakijima Optical Observation
  74. GRB110205A: MITSuME Okayama Optical Observation
  75. GRB 110205A: Swift/UVOT Continuing Observations
  76. GRB 110205A: Newcastle Observatory Optical Observations
  77. GRB 101225A is likely at z~0
  78. GRB 110205A: FAST Redshift
  79. GRB 110205A: PAIRITEL NIR Afterglow Detection
  80. GRB 110205A: Possible Lick/Kast redshift
  81. GRB 110205A: Swift/UVOT Confirmation of Flaring Afterglow
  82. GRB 110205A: Liverpool Telescope Afterglow Confirmation
  83. GRB110112B: EVLA Observations
  84. GRB110128A: MITSuME Okayama optical upper limits
  85. GRB 101112A: Maidanak and CrAO optical observations
  86. GRB110128A: TNG NIR observations
  87. GRB 110128A: TAROT-Calern refined analysis
  88. GRB 110120A: Suzaku WAM observation of the prompt emission
  89. GRB 110128A: WHT redshifts of nearby field galaxies
  90. Konus-Wind observation of GRB 110120A
  91. GRB 110120A: MASTER optical observations
  92. GRB 110120A: Fermi LAT detection
  93. GRB 101225A: CQUEAN optical observation
  94. GRB 110120A: Fermi GBM detection
  95. GRB 110119A: Suzaku WAM observation of the prompt emission
  96. GRB 110120A: MASTER optical observations
  97. GRB110119A: MITSuME Okayama optical upper limits
  98. GRB 110119A: PAIRITEL NIR Afterglow Detection
  99. GRB 101219B: tentative redshift and spectroscopic supernova detection
  100. New feature in Fermi GBM GRB Ground Position Notices

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