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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"

20535 results found.

  1. GRB990316: simultaneous optical observation
  2. ASM/IPN error box for GRB 990308 (BATSE #7457)
  3. GRB990308, Possible new SGR~0209+70
  4. GRB 990123, Field Photometry
  5. GRB 990217 Optical Observations
  6. BATSE Flight Anomaly
  7. GRB990123 observations
  8. GRB990123, Optical Observation
  9. GRB 990123: Discovery of the Probable Host Galaxy
  10. GRB19990123 observations
  11. GRB 990123: BVRI standards in the field
  12. GRB 990123: Updated Keck Spectroscopy Results
  13. GRB981220, field photometry
  14. GRB990123, Optical observation
  15. GRB990123, 15-GHz limits
  16. GRB 990123: New Constraints on Possible Foreground Galaxies
  17. GRB990123 Optical Observations
  18. GRB990123, Probability of gravitational lensing
  19. GRB 990123: Detection of the IR Transient, and the Light Curve Fits
  20. GRB990123, Preliminary Lens Search Results
  21. Search for Potential Images of GRB 990123
  22. GRB990123, Optical BVRI Observations
  23. GRB 990123: near-infrared observations.
  24. GRB990123, OSSE observations
  25. GRB990123: NIR Observation
  26. "GRB 990123: New BV Observations"
  27. GRB 990123: BATSE Observations
  28. GRB 990123: New Optical Observations, Decay Measure
  29. GRB 990123 Optical Follow-Up
  30. GRB 990123: Possible Gravitationally Lensed Burst?
  31. GRB990123, optical observation
  32. GRB 990123 optical observations
  33. GRB 990123: Pre-Burst Detection of an Apparent Host Galaxy
  34. GRB990123 optical observations
  35. GRB 990123 r-band photometry
  36. GRB 990123 Optical Follow-up
  37. GRB990123 Optical Observation
  38. Possible identification of SN1999E with GRB980910
  39. Optical Observations of GRB 981220
  40. GRB 981226: radio variable
  41. GRB 981226 Optical Observations
  42. GRB981226 Optical Observations
  43. GRB981226 BeppoSAX follow up
  44. GRB 981226 radio observations
  45. GRB 981226
  46. GRB 981226 optical observations
  47. radio observations of GRB 981226
  48. GRB981220 B, R and I band observations
  49. GRB 981220:Optical Observations
  50. GRB 981226 optical observations
  51. GRB 981220, radio observations
  52. GRB 981220, radio observations
  53. GRB 981220
  54. GRB 980326/Host Galaxy
  55. GRB981220 IPN error box
  56. BeppoSAX NFI Observation of GRB980425
  57. GRB980329 R,I flux calibration and R,I,K upper limits
  58. GRB980425 Optical Follow-up
  59. GRB 980923 BATSE Observations
  60. GRB980703 Very Long Baseline Interferometry
  61. GRB970508 optical observations
  62. GRB971214, association with a Galactic star?
  63. GRB980519, Optical Observations
  64. GRB980703, Host galaxy multicolor photometry
  65. GRB980703 - BeppoSAX/GRBM detection
  66. GRB 980703 (NFI observations)
  67. GRB980703 optical photometry
  68. GRB980703 optical observations
  69. GRB980703 Transient Optical Follow-Up
  70. GRB980703: LOTIS observation at early times
  71. GRB980613 Optical Observations
  72. GRB980703 (optical R observations)
  73. BeppoSAX NFI observations of GRB 980703
  74. GRB 980703: ASM Position & Intensity
  75. GRB980703 optical followup
  76. Radio observations of SGRs
  77. SGR1900+14 field optical observations
  78. GRB 980613: Optical transient and its host galaxy
  79. SGR1627-41, RXTE/ASM observations
  80. GRB 980613: Detection of the probable host galaxy
  81. GRB 980613 Optical Observations
  82. GRB 980613 optical observations
  83. Discovery of a new SGR source, SGR1627-41
  84. GRB980613 Optical Observations
  85. GRB980613 observations from Palomar
  86. GRB 980613 optical/IR obs.
  87. GRB980613 Near Infra-Red Observations
  88. GRB980613, BeppoSAX WFC positions
  89. GRB971214 Secondary Standards
  90. GRB980519 Secondary Standards
  91. SGR1900+14
  92. SGR1900+14
  93. BATSE on-board GRB trigger change
  94. GRB 980519 Optical Observations
  95. GRB 980519
  96. GRB980519 optical observations
  97. GRB 980519 Optical Observations
  98. GRB970519, optical follow-up at Schmidt Calern
  99. GRB980519 Optical Observations
  100. GRB 980519 Optical Observations

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