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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"

23686 results found.

  1. GRB080916A: Suzaku WAM observation of the prompt emission
  2. GRB080922: A long GRB detected by INTEGRAL
  3. GRB 080913B: Fermi GBM detection
  4. Trigger 324561: IGR J08408-4503 detected by Swift
  5. GRB 080919: Swift-XRT refined analysis
  6. GRB 080919, Swift-BAT refined analysis
  7. GRB 080919: Swift detection of a short burst
  8. GRB 080916A: Rapid PROMPT Observations
  9. GRB 080916C: Swift UVOT Refined Analysis
  10. GRB 080916C: Swift XRT refined analysis
  11. GRB 080916B: Swift-XRT refined analysis
  12. Konus-Wind observation of GRB 080916A
  13. Konus-Wind observation of GRB 080916C
  14. GRB 080916C: GROND Detection of the Optical Afterglow Candidate
  15. GRB 080913: Konus-Wind and Swift/BAT joint spectral analysis
  16. IPN Triangulation and Energy Spectrum of GRB080916C
  17. GRB 080916B, Swift-BAT refined analysis
  18. GRB 080915a, SMARTS optical/IR observations
  19. GRB 080916A: Swift XRT refined analysis
  20. GRB 080916A, Swift-BAT refined analysis
  21. GRB 080916B: Swift-XRT afterglow detection
  22. GRB 080916B: Swift detection of a burst
  23. GRB 080916: Swift detection of a burst with optical afterglow
  24. GRB 080915B, Swift-BAT refined analysis
  25. GRB 080915B: Swift detection of a burst
  26. GRB 080915, Swift-BAT refined analysis
  27. SGR 0501+4516 : P200 i-band observations
  28. GRB 080915: Swift detection of a burst
  29. GRB 080913, Swift-BAT refined analysis
  30. GRB 080913: REM NIR early observations
  31. GRB 080913: GROND observation of a high-z optical/NIR afterglow candidate
  32. GRB 080913: Swift detection of a burst
  33. Swift-BAT/-XRT refined analysis on trigger 324362 (LS I +61 303)
  34. GRB 080906B: Fermi GBM detection
  35. Swift trigger 324362 (LS I +61 303 ?)
  36. GRB 080904: Fermi Gamma-ray Burst Monitor detection
  37. Swift Trigger 324122 is again known source Swift J1842.5-1124
  38. Swift Trigger 324116 is known source again
  39. Swift Trigger 324112 is known source Swift J1842.5-1124
  40. GRB 080906, Swift-BAT refined analysis
  41. GRB 080906: GROND observations of the optical/NIR afterglow
  42. GRB 080905B: Refined UVOT Analysis
  43. GRB 080905B: VLT redshift
  44. GRB 080905B, Swift-BAT refined analysis
  45. GRB 080905A, Swift-BAT refined analysis
  46. GRB 080906: Swift detection of a burst with optical afterglow
  47. GRB 080905A: Swift-XRT Refined Analysis
  48. GRB080825C: Fermi-LAT observations
  49. GRB 080905B: Swift detection of a burst with possible optical counterpart
  50. GRB 080905: Swift detection of a probably-short burst
  51. GRB 080903, Swift-BAT refined analysis
  52. GRB 080903: optical observations
  53. GRB 080903: Astrotel-Caucasus optical observations
  54. GRB 080903: Optical afterglow candidate
  55. GRB 080903: TAROT Calern observatory optical observations
  56. GRB 080903: Swift detection of a burst
  57. SGR 0501+4516: Spin Down Rate and Inferred Dipole Magnetic Field
  58. SGR 0501+4516: preliminary results of the first XMM-Newton observation
  59. INTEGRAL ToO observation of SGR0501+4516
  60. SGR 0501+4516: Confirmation of the NIR counterpart
  61. SGR 0501+4516: Detection of possible optical counterpart
  62. Swift trigger 322590: BAT detection of a possible burst
  63. GRB 080828: SuperAGILE GRB Localization
  64. SGR 0501+4516: Proximity to supernova remnant HB9
  65. SGR 0501+4516: Swift XRT measure of the spin period
  66. GRB080823: Fermi Gamma-ray Burst Monitor detection
  67. GRB 080824: Fermi Gamma Ray Burst Monitor detection
  68. Konus-Wind observation of GRB 080825B
  69. SGR 0501+4516: Fermi GBM (formerly GLAST Burst Monitor) observations of three exceptionally intense outbursts
  70. GRB 080825B: GRB Localization by SuperAGILE
  71. Konus-Wind observations of new SGR 0501+4516
  72. INTEGRAL ToO Observation of SGR0501+4516
  73. GRB 080822B, Swift-BAT refined analysis
  74. Trigger 321551: Continued Large Flaring of SGR 0501+4516
  75. SGR 0501+4516: optical observations
  76. Swift Trigger 321481: A Large Flare from SGR 0501+4516
  77. GRB 080822B: Swift detection of a burst
  78. GRB080818B: GLAST Burst Monitor detection
  79. New Soft Gamma Repeater 0501+4516 was GRB 080822
  80. GRB 080822: Swift detection of a short burst
  81. GLAST Burst Monitor detection of a GRB: 080816B
  82. GLAST Burst Monitor detection of GRB 080818
  83. GLAST Burst Monitor detection of GRB080817B
  84. GRB 080810: RTT150 optical observations
  85. GRB 080810: Konus-Wind and Swift/BAT joint spectral analysis
  86. GLAST Burst Monitor detection of GRB 080810
  87. GRB 080810: Liverpool and Faulkes North observations
  88. GRB 080810: RTT150 optical observations
  89. GRB080810: MITSuME optical observation
  90. GRB 080810: optical observations
  91. GRB 080810: D50 optical observation
  92. GRB 080810: RTT150 optical observations
  93. GRB 080810: KANATA optical-NIR observation, update
  94. GRB 080810, Swift-BAT refined analysis
  95. GRB 080810 : optical observation with KANATA
  96. GRB 080810: Swift detection of a burst with a bright optical afterglow
  97. GRB 080805: VLT redshift update
  98. GRB 080727B: Late VLT imaging
  99. GRB 080804: Swift/UVOT Refined Analysis
  100. GRB 080805, Swift-BAT refined analysis

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