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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"
  1. GRB000911, Radio and Optical observations
  2. GRB000911, Radio observations
  3. GRB000911: Optical observations
  4. IPN triangulation of GRB000911
  5. IPN triangulation of GRB000910
  6. False GRB alarm from RXTE/ASM on 8 Sept 2000
  7. GRB 000830: Optical observations
  8. GRB000830: Optical observations
  9. GRB000830, TNG B-band observations
  10. GRB000830, BVRI field photometry
  11. GRB000830: Optical observations
  12. GRB000210, Optical observations
  13. Chandra Position of GRB000210
  14. "Snapshot" afterglow IDs and GRB 000830
  15. GRB000830: Optical observations
  16. IPN triangulation of GRB000830
  17. HST/STIS observations of the host galaxy of GRB 980329
  18. HST/STIS observations of the chaotic environment of GRB 980613
  19. IPN localization of GRB000820
  20. SGR 1806-20 burst activity
  21. GRB000812, TNG R-band observations
  22. GRB000801 & GRB000730, Gamma Ray Observations
  23. GRB000730, Gamma Ray Observations
  24. GRB000812, Radio observations
  25. IPN localization of GRB000812
  26. IPN localization of GRB000811
  27. GRB000801, Gamma Ray Observations
  28. GRB000801, VLT-Antu R-band observations
  29. GRB000301C, UBVI optical observations
  30. GRB000801, Radio Observations
  31. GRB 991208 Host Galaxy Imaging
  32. Updated IPN coordinates for GRB000801
  33. IPN localization of GRB000801
  34. IPN localization of GRB000801
  35. IPN localization of GRB000730B
  36. IPN localization of GRB000730B
  37. IPN localization of GRB000730
  38. GRB 990510: Possible detection of a host galaxy
  39. GRB 990510 Host Galaxy Discovery
  40. GRB 000727, optical observations
  41. IPN localization of GRB000727
  42. GRB 990705, HST/STIS observations of the host galaxy
  43. GRB 990712: Late time HST/STIS Observations
  44. GRB 991216, HST/STIS observations
  45. GRB000620, Radio Observations
  46. GRB981226, HST/STIS observations of the host galaxy
  47. GRB000630, optical observations
  48. GRB 000630: Detection of the Optical Afterglow
  49. GRB000630, Revised BVRI Field Photometry
  50. GRB000630, Optical Observations
  51. GRB000630, optical observations
  52. GRB000630, optical observations
  53. GRB000630, BVRI Field Photometry
  54. GRB000630, optical observations
  55. GRB000630, optical observations
  56. GRB000630: Optical observations
  57. GRB000630, Radio Observations
  58. possible optical counterpart of GRB 000630
  59. IPN triangulation of GRB000630
  60. GRB 000623, optical observations
  61. GRB 000620, optical observations
  62. GRB000418, HST/STIS Observations
  63. GRB990123: Late-time HST/STIS observations of the host
  64. GRB 990506, HST/STIS Observations of the Host Galaxy
  65. GRB000623
  66. GRB 000620: J-band observations
  67. GRB000620, optical observations
  68. GRB000615: H-band observations
  69. GRB990308, HST/STIS observations of the host galaxy
  70. GRB000620 - Optical observations
  71. GRB000620 Optical observations
  72. IPN annulus for GRB000620
  73. GRB000620: BeppoSAX WFC and GRBM detection
  74. GRB000615, Radio observations
  75. GRB000607, optical observations
  76. GRB 000615: NIR further observations
  77. GRB000620: refined BeppoSAX/WFC coordinates
  78. BeppoSAX ALERT: GRB000620
  79. GRB000620: BeppoSAX Alert
  80. GRB990123, HST/STIS observations of the host galaxy
  81. GRB000616 optical observations
  82. GRB 000615, near-infrared observations
  83. GRB 990123: Late-time HST/STIS 50CCD observations of the host
  84. GRB000616 [IPN Position]
  85. GRB000615B [IPN Position]
  86. GRB000615, further R-band photometry
  87. GRB 000615: NIR observations
  88. GRB000615: BeppoSAX NFI follow-up preliminary analysis
  89. GRB000615, R-band photometry
  90. GRB000615: BeppoSAX refined coordinates
  91. GRB980425, HST/STIS observations of the host galaxy
  92. GRB000615: BeppoSAX GRB Alert
  93. The Hosts of GRB 980703 and GRB 971214
  94. GRB 000301C: Further Late-Time HST/STIS observations
  95. GRB000528: follow-up X-ray measurements and update of IPN annulus
  96. Optical Follow-up of GRB000529 Error Box
  97. GRB980519, HST/STIS observations of the host galaxy
  98. GRB000607, Radio Observations
  99. BeppoSAX X-ray transient/possible GRB000608
  100. GRB000604 optical non-detection

Advanced

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