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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"

15360 results found.

  1. GRB000630, optical observations
  2. GRB000630: Optical observations
  3. GRB000630, Radio Observations
  4. GRB000418, HST/STIS Observations
  5. GRB990123: Late-time HST/STIS observations of the host
  6. GRB000620, optical observations
  7. GRB000615: H-band observations
  8. GRB000620: BeppoSAX WFC and GRBM detection
  9. GRB000607, optical observations
  10. GRB 000615: NIR further observations
  11. GRB 990123: Late-time HST/STIS 50CCD observations of the host
  12. The Hosts of GRB 980703 and GRB 971214
  13. GRB 000301C: Further Late-Time HST/STIS observations
  14. GRB000528: follow-up X-ray measurements and update of IPN annulus
  15. Optical Follow-up of GRB000529 Error Box
  16. GRB000604 optical non-detection
  17. GRB000604, optical observations
  18. GRB000528, optical observations at ESO
  19. X-ray Afterglow of GRB 000529
  20. GRB000519: Optical observations
  21. GRB000528: BeppoSAX GRBM observations
  22. GRB 000528 Optical Observations
  23. Re: GRB000508B : Optical observations
  24. GRB 000424 Optical Observations
  25. The redshift of GRB 000418
  26. GRB000418, Radio detection
  27. GRB 000418, Optical Observation
  28. GRB000418, near-infrared observations
  29. BATSE observations of FXT/GRB 000416 = 1SAXJ1715.0-7134
  30. GRB 000301C: Late-Time HST/STIS CCD Imaging of the field
  31. GRB000408 [IPN Position]
  32. GRB000326 Optical Observations
  33. GRB000326, Further VLA observations
  34. GRB000313, Radio observations
  35. GRB 000301C: A Precise Redshift Determination
  36. GRB 000301C, Optical Observation
  37. GRB 000301C: HST/STIS CCD Imaging of the field
  38. GRB 000301c: K' observations
  39. GRB000301C, optical R-band observations
  40. GRB 000301C Optical Observations
  41. GRB 000301C: K' Observations
  42. GRB000301C - Host galaxy not detected in R (?)
  43. Optical observations of GRB000301c
  44. GRB000301C, Radio observations
  45. GRB000301C, Radio observations
  46. GRB000301C, near-infrared observations (JHK' imaging)
  47. GRB 000301c near-IR observations
  48. GRB000301C 250 GHz detection
  49. GRB 000301C R-band observation
  50. GRB000301C, near-infrared observations (JHK' photometry)
  51. GRB 000301A, Radio Observations
  52. GRB000301C, optical observations
  53. GRB000301c, near-infrared observations
  54. GRB000301C: RXTE/ASM and IPN localizations
  55. HST Observations of GRB 990712
  56. GRB000210, Radio Observations
  57. GRB000214: BeppoSAX GRBM and WFC Detection
  58. Optical observations of GRB000210
  59. GRB000210 X-ray afterglow
  60. Correction to Chandra Position of GRB000210 afterglow
  61. GRB000210: BeppoSAX GRBM and WFC Detection
  62. Optical observations of GRB000131
  63. GRB 000201: TAROT optical observations
  64. GRB 991208, radio observations
  65. BATSE Observations of GRB000115
  66. GRB 991216 VLBA Observations
  67. BEPPOSAX GRBM Localization of GRB991226
  68. GRB 991216: Detection of the Host and/or Absorber Galaxy
  69. GRB 991216: Updated BATSE parameters
  70. Lowell/Perkins observation of GRB 991216
  71. GRB 991217 (SAX J2303.2+0015) Optical observations
  72. GRB991217/SAX J2303.2+0015, optical observations
  73. Chandra observation of the X-ray afterglow of GRB991216
  74. GRB 991216 Optical spectroscopy/imaging
  75. GRB991216 Optical and IR observations
  76. SAX J2303.2+0015 Optical observations
  77. GRB991216 radio observations
  78. GRB 991217 (SAX J2303.2+0015) Optical observations
  79. GRB991216 radio observations
  80. GRB991216, optical observations
  81. GRB991216 Optical and infrared observations of Beethoven Burst
  82. Refined IPN localization of GRB991216
  83. GRB 991216 Radio Observations
  84. GRB 991208 Keck Spectroscopy
  85. GRB 991208 Infrared Detection
  86. GRB991216
  87. GRB 991216--Summary of RXTE Observations
  88. GRB 991216, optical observations
  89. SAX J2303.2+0015: an x-ray/GRB?
  90. GRB 991208 Keck Spectroscopy
  91. GRB991208 - millimeter detection
  92. GRB 991208 Optical Decay
  93. GRB 991208 optical observations
  94. GRB991106: BeppoSAX/BATSE results
  95. GRB 991106, optical observations
  96. GRB991106, near-infrared observations
  97. BeppoSAX NFI Observation of GRB991106
  98. GRB991106: the first BeppoSAX short GRB detection?
  99. GRB991105: SAX-GRBM/-WFC detection
  100. GRB 991014 - X-ray afterglow identification by BeppoSAX-NFI

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