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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"

35997 results found.

  1. GRB 031203: Radio detection
  2. GRB 031203: Further reports on December 4 observations
  3. GRB 031203: IR NTTobservations do not confirm REM detection
  4. GRB031203 : Optical Observation of Lulin Observatory
  5. GRB 031203: z ~ 10 or Fragmented Dust in the Circumburst Environment?
  6. GRB 031203: Apparent Spectral Break
  7. GRB 031203: IR REM Observations
  8. GRB031203: Optical Observations
  9. GRB 031203 XMM-Newton observation
  10. GRB 031203: Optical/IR SMARTS Observations
  11. IPN triangulation of GRB031127A and B (quasi-simultaneous; large error boxes)
  12. GRB 031203: further analysis of INTEGRAL data
  13. GRB 031203: A long GRB detected with INTEGRAL
  14. IPN triangulation of GRB031201 (large error box)
  15. IPN triangulation of GRB031130 (large error box)
  16. GRB031111A, prompt optical observations
  17. GRB 030329: Planned XMM-Newton Observation
  18. IPN triangulation of GRB031120 (two large error boxes)
  19. GRB 031111B (= H2925) : Kyoto Optical Observation
  20. IPN/HETE localization of GRB031109 (=H2917; large error box)
  21. IPN detection of activity from SGR1806-20
  22. GRB 031111, Radio observations
  23. IPN triangulation of GRB031114 (large error box)
  24. IPN triangulation of GRB031107 (two large error boxes)
  25. GRB 031111: Optical observations
  26. GRB 031111, optical observations
  27. SN 2003jd (SN/GRB?) -- X-ray Observations
  28. HETE Prompt GRB Spectral Analyses
  29. IPN triangulation of GRB031111 (=H2924): small error box
  30. IPN triangulation of GRB031108 (large error box)
  31. GRB030929/SN2003jd association unlikely based on IPN localiztion
  32. IPN triangulation of GRB031027 (small error box)
  33. IPN triangulation of GRB031026B (large error box)
  34. SN 2003jd (SN/GRB?), Radio Observations
  35. SN 2003jd (SN/GRB?) - possible association with GRB 030929
  36. GRB 031026: Further Ic Observations
  37. GRB 031026 (=H2882): Evidence for High Redshift from Prompt
  38. Peculiar Type Ic SN 2003jd (SN/GRB?), optical spectrum
  39. IPN triangulation of GRB031024 (single error box)
  40. GRB031026 (=H2882): A Long, Hard Spectrum Burst Localized by HETE
  41. GRB 031026: Ic Observations
  42. GRB031026 : KISO optical follow-up observation
  43. IPN triangulation of GRB031024 (annulus)
  44. IPN triangulation of GRB031020 (large error box)
  45. IPN triangulation of GRB031016 (two large error boxes)
  46. IBAS alert 1180 refers to a burst from SGR 1806-20
  47. HETE Prompt GRB Light Curves and Color-Color Diagrams
  48. IPN triangulation of GRB031014 (annulus)
  49. SGR1806-20 bursts on 031008. Helicon detection and small error box.
  50. IPN triangulation of GRB031008 (annulus)
  51. IPN detection of continued activity from SGR1806-20
  52. IPN triangulation of GRB031007 (two large error boxes)
  53. XRF 030723: Subaru Optical Observations
  54. IPN triangulation of GRB031004B (annulus)
  55. IPN triangulation of GRB031004A (short/hard; annulus)
  56. IPN triangulation of GRB030929 (short/hard; annulus)
  57. XRF 030824: Early follow-up observation at Kiso observatory
  58. XRF 030824: observations at CFHT
  59. IPN triangulation of GRB030926 (short/hard; large error box)
  60. IPN triangulation of GRB030922B (large error box)
  61. IPN triangulation of GRB030922A (large error box)
  62. IPN triangulation of GRB030921 (large error box)
  63. IPN triangulation of GRB030919 (large error box)
  64. GRB030922 triangulation (annulus)
  65. GRB030913: Subaru Optical Observations
  66. GRB 030913: ROTSE-3c Optical Observations
  67. GRB030913: OT's limit by MASTER
  68. GRB030921 triangulation (annulus)
  69. GRB030913, candidate afterglow observations
  70. GRB 030913, optical candidate
  71. GRB 030913, BOOTES observations
  72. IPN triangulation of GRB030916 (possible short/hard GRB; large error box)
  73. GRB030913 (=H2849): TAROT Observations
  74. GRB030913: wide field imaging (7 sq.deg) of the error box by MASTER
  75. Magellan Observations of GRB030725 (=H2779)
  76. GRB030913 (=H2849): A GRB Possibly Localized by HETE
  77. IPN triangulation of GRB030908 (annulus)
  78. GRB 030913: Optical limit at RIKEN
  79. XRF030824: Optical observations
  80. IPN triangulation of GRB030903 (large error box)
  81. IPN triangulation of GRB030831 (annulus)
  82. IPN triangulation of GRB030830 (large error box)
  83. GRB 030824: Candidate Follow-Up
  84. IPN triangulation of GRB030827 (large error box)
  85. GRB 030823 observation at Ouda
  86. XRF030824: Second-epoch Palomar observations
  87. IPN triangulation of GRB030822 (annulus)
  88. GRB030823: Palomar observations
  89. XRF030824: Palomar observations
  90. GRB 030824: Candidate Afterglow (or Variable/Flare Star?)
  91. IPN triangulation of GRB030821 (=H2814; refined error box)
  92. GRB 030821(=H2814): A Faint, Long GRB Localized by the HETE WXM and the IPN
  93. Summary of recent IPN and HETE detections of SGR bursts
  94. IPN triangulation of GRB030814 (annulus)
  95. IPN detection of continued activity from SGR1806-20
  96. 030813 SGR event (Konus-Wind observation)
  97. GRB 030817 = H2808 TAROT optical observations
  98. SGR 1808-20 (=H2802): A Possible new SGR
  99. GRB 021206 Optical Observations
  100. IPN triangulation of GRB030808 (two large error boxes)

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