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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"

23625 results found.

  1. Swift/UVOT refined analysis of GRB070724
  2. Short-Hard GRB070714B: PROMPT Observations
  3. GRB 070724, Swift-BAT refined analysis of a short burst
  4. GRB 070724: Swift detection of a burst
  5. Swift/UVOT observations of GRB070721B optical afterglow.
  6. GRB 070721B, Swift-BAT refined analysis
  7. GRB 070721A, Swift-BAT refined analysis
  8. GRB 070721B: Swift detection of a burst
  9. GRB 070721: Swift detection of a possible burst
  10. GRB 070714B: Swift/BAT and Suzaku/WAM joint spectral analysis
  11. GRB 070714B : Suzaku WAM observation of the prompt emission
  12. GRB 070714A: Swift-BAT T_zero
  13. GRB070714B: TNG NIR observations
  14. Erratum : Suzaku WAM observation of GRB 070704
  15. GRB 070616: No Evidence for I Band Afterglow
  16. GRB 070714B, Swift-BAT refined analysis of the short hard burst
  17. GRB 070714A, Swift-BAT refined analysis
  18. GRB 070714 : Liverpool Telescope optical counterpart ?
  19. GRB 070714: Swift detection of a bright burst, possibly short
  20. Swift detection of a possible burst (Trigger 284850)
  21. GRB 070704: RTT150 optical observations
  22. GRB 070704: Suzaku/WAM observation of the prompt emission
  23. Konus-Wind observation of GRB 070707
  24. GRB 070707: A long GRB detected by INTEGRAL
  25. GRB 070707: A long GRB detected by INTEGRAL
  26. GRB 070429B: NIR Observations
  27. GRB070704: FAVOR optical observations
  28. GRB 070704 : Liverpool Telescope Observations
  29. GRB 070704, Swift-BAT refined analysis
  30. GRB 070704: Swift detection of a burst
  31. GRB 070626: Suzaku/WAM observation of the prompt emission
  32. GRB 070626: IPN localization and Konus spectrum of a bright long burst
  33. GRB 070628, Swift-BAT refined analysis
  34. GRB 070628: TAROT La Silla observatory optical observations
  35. GRB 070628: Swift XRT refined analysis
  36. GRB 070628: Swift detection of a possible burst
  37. GRB 070612A: Allen Telescope Array Observations
  38. OT20050728 was not an optical GRB afterglow
  39. GRB 070616 : WIDGET simultaneous optical observations
  40. GRB 070616: Suzaku/WAM observation of the prompt emission
  41. GRB070621: RTT150 optical observations
  42. GRB 070621: Swift-BAT refined analysis
  43. Observations of GRB070612A at Calar Alto
  44. GRB 070621: TAROT Calern observatory optical observations
  45. GRB 070621: Swift detection of a burst
  46. GRB 070612A: TNG optical observations
  47. Swift/UVOT detection of GRB070616 optical afterglow.
  48. GRB 070612A: NOT observations
  49. GRB070616: Optical Observation by MITSuME Okayama
  50. GRB 070616: BTA optical observations
  51. Swift/UVOT observations of GRB070616
  52. GRB 070616, Swift-BAT partial refined analysis
  53. GRB 070616: Swift detection of a burst
  54. GRB 070615: A long GRB detected by INTEGRAL
  55. GRB 070612A: Super-LOTIS observations
  56. GRB 070612A: Suzaku/WAM observation of the prompt emission
  57. GRB070612A: MITSuME Okayama Observation
  58. Swift Trigger 282176 is Cygnus X-1
  59. GRB 070612A: MDM Observations
  60. GRB 070612B, Swift-BAT refined analysis
  61. GRB 070612A, Swift-BAT refined analysis
  62. GRB 070612B: KAIT limits
  63. GRB 070610: TAROT Calern observatory optical observations
  64. GRB 070610: MITSuME OAO optical upper limit
  65. GRB 070612B: Swift detection of a burst
  66. GRB070612 - SDSS Pre-Burst Observations
  67. GRB 070612: Swift detection of a burst
  68. GRB 070610: TLS RRM sees flaring behaviour - Galactic transient?
  69. GRB 070611, Swift-BAT refined analysis
  70. GRB 070611: VLT redshift
  71. GRB 070611: ROTSE-III Optical Limits
  72. GRB 070611: Swift detection of a burst
  73. GRB 070610, Swift-BAT refined analysis
  74. GRB 070610: Swift detection of a burst
  75. GRB 070412: TAROT Calern observatory optical observations
  76. GRB 070411: TAROT Calern observatory optical observations
  77. GRB 070419A, deep LBT photometry and possible supernova detection
  78. GRB070520: optical observation
  79. GRB070518: optical observation
  80. GRB070521: optical observation
  81. Swift/UVOT refined analysis of GRB070531
  82. GRB 070531: Swift-BAT refined analysis
  83. GRB 070531: Liverpool Telescope Optical Observations
  84. GRB 070531: Swift detection of a burst
  85. Swift/UVOT refined analysis of GRB070529
  86. GRB 070529: MARGE Observations
  87. GRB 070529: Optical aterglow from MIRO
  88. GRB 070529: Gemini Redshift
  89. GRB 070529, Swift-BAT refined analysis
  90. GRB 070529: Swift detection of a burst with an optical aterglow
  91. Swift Triggers 280447, 280450 and 280451 are invalid
  92. Swift trigger 280447 is probably a Galactic transient
  93. GRB 070518, deep LBT photometry
  94. GRB 070518: MARGE Observations
  95. Konus-Wind observation of GRB 070521
  96. GRB 070521: Keck imaging
  97. GRB 070521 Milagro GeV/TeV Observations
  98. GRB 070521, Swift-BAT refined analysis
  99. GRB 070521: optical limit by Pi of the Sky
  100. GRB070521: P200 Observations

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