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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"

42676 results found.

  1. GRB000615: H-band observations
  2. GRB990308, HST/STIS observations of the host galaxy
  3. GRB000620 Optical observations
  4. IPN annulus for GRB000620
  5. GRB000620: BeppoSAX WFC and GRBM detection
  6. GRB000615, Radio observations
  7. GRB000607, optical observations
  8. GRB 000615: NIR further observations
  9. BeppoSAX ALERT: GRB000620
  10. GRB000620: BeppoSAX Alert
  11. GRB990123, HST/STIS observations of the host galaxy
  12. GRB000616 optical observations
  13. GRB 000615, near-infrared observations
  14. GRB 990123: Late-time HST/STIS 50CCD observations of the host
  15. GRB 000615: NIR observations
  16. GRB000615: BeppoSAX NFI follow-up preliminary analysis
  17. GRB980425, HST/STIS observations of the host galaxy
  18. GRB000615: BeppoSAX GRB Alert
  19. The Hosts of GRB 980703 and GRB 971214
  20. GRB 000301C: Further Late-Time HST/STIS observations
  21. GRB000528: follow-up X-ray measurements and update of IPN annulus
  22. Optical Follow-up of GRB000529 Error Box
  23. GRB980519, HST/STIS observations of the host galaxy
  24. GRB000607, Radio Observations
  25. BeppoSAX X-ray transient/possible GRB000608
  26. GRB000604 optical non-detection
  27. GRB000604 - Optical observations
  28. GRB000607, A SHORT, HARD BURST
  29. GRB000604, optical observations
  30. GRB000528, optical observations at ESO
  31. GRB 000604 optical observations
  32. GRB 000418: Detection of the Host Galaxy
  33. GRB000604, optical observations, comparison with DPOSS
  34. GRB000604 [IPN Position]
  35. GRB000528, Radio Observations
  36. X-ray Afterglow of GRB 000529
  37. GRB000529: BeppoSAX NFI follow-up preliminary analysis
  38. GRB000528: BeppoSAX NFI follow-up preliminary analysis
  39. GRB000529: Optical Observations
  40. IPN localization and time history of GRB000528
  41. New IPN localization of GRB000529
  42. GRB000519: Optical observations
  43. GRB000529: BeppoSAX WFC position
  44. GRB000528: BeppoSAX GRBM observations
  45. GRB 000528 Optical Observations
  46. GRB000519, BVRI field photometry
  47. IPN triangulation of GRB000519
  48. IPN triangulation of GRB000516
  49. Re: GRB000508B : Optical observations
  50. GRB 000418, Optical observation
  51. GRB000508B, BVR field photometry
  52. Possible GRB-related phenomenon
  53. RXTE/ASM and IPN localization of GRB 000508B
  54. GRB000424, UBVRI field photometry
  55. GRB 000424 Optical Observations
  56. GRB000418, UBVRI field photometry update
  57. The redshift of GRB 000418
  58. GRB000424, optical observations
  59. GRB 000429, optical observation
  60. GRB 000429, UBVRI field photometry
  61. IPN localization of GRB000429
  62. GRB 000418, UBVRI field photometry
  63. GRB000418, Radio detection
  64. GRB000418, K'-band photometry
  65. GRB 000418, optical observation
  66. GRB000424 Optical Observations
  67. GRB 000418, Optical Observation
  68. GRB000424, optical observations
  69. GRB 000424, Optical Observations
  70. GRB 000418, Optical Observation
  71. GRB000418, near-infrared observations
  72. BeppoSAX GRB000424
  73. Correction to IPN error box for GRB000419
  74. IPN error box for GRB000418
  75. GRB000419 [IPN Position]
  76. BATSE observations of FXT/GRB 000416 = 1SAXJ1715.0-7134
  77. GRB000416 BRJK observations
  78. 1SAXJ1715.0-7134 refined position
  79. RE: Budget cuts in BeppoSAX operations: impact on GRB observation
  80. X-ray burst or X-ray rich GRB 000416 observed by BeppoSAX
  81. Budget cuts in BeppoSAX operations: impact on GRB observations
  82. GRB 000408, optical observations
  83. Refined IPN error box for GRB000408
  84. GRB 991208, UBVRI field photometry
  85. GRB000301c results
  86. GRB 000301C: Late-Time HST/STIS CCD Imaging of the field
  87. GRB000408 [IPN Position]
  88. GRB000326 Optical Observations
  89. GRB000301C - Addendum to GCN 623
  90. GRB000301C - R magnitude lower limit
  91. GRB000326, Further VLA observations
  92. GRB 000323, optical observations
  93. GRB 000326: Optical Observations
  94. GRB000326, Radio observations
  95. GRB000326 [IPN Position]
  96. GRB 000307 optical observations
  97. GRB000323 [IPN Position]
  98. GRB000315 [IPN Positions]
  99. GRB000313, Radio observations
  100. GRB 000313 - optical transient in the BATSE error box

Advanced

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