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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.

"N/A_MC170616_R1" does not adhere to advanced search syntax. Please refer to the documentation and try again.
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"

10956 results found.

  1. GRB 050309 : Lulin R-band observation
  2. GRB 050306: CORRECTION to date of observation
  3. GRB 050306: R-band observations
  4. GRB 050306: No Swift UVOT Optical Counterpart Detected
  5. GRB 050306: REM optical-infrared observations
  6. GRB 050306: Possible X-ray Afterglow Position from the Swift
  7. GRB 050306: Swift-BAT detection of a long burst
  8. GRB050215B: Late-Time Swift UVOT Observations
  9. Confirmed XRF nature for GRB050215b
  10. INTEGRAL detection of GRB 050223
  11. GRB050223: No Swift UVOT Detection of Afterglow Emission
  12. GRB 050223 Swift/BAT detection of a burst
  13. GRB 050223: Swift XRT Position
  14. HETE-2 Observations of GRB 050215b (=U11570): A Likely X-Ray Flash
  15. GRB050219b: CORRECTION to time of UVOT observations
  16. GRB050215b: Faulkes North and SDSS limits on UKIRT candidate
  17. GRB050219b: No Swift UVOT Detection of Afterglow Emission
  18. GRB 050219b: CORRECTION to refined XRT position
  19. GRB050219b: No Swift UVOT Detection of Afterglow Emission
  20. GRB 050219b: Refined XRT position
  21. GRB 050219b: Swift-BAT detection of a burst
  22. GRB 050219b: CORRECTION: Swift XRT Position
  23. GRB 050219b: Swift XRT Position
  24. GRB 050219a: Refined XRT position
  25. GRB050219a: No Swift UVOT Detection of Afterglow Emission
  26. GRB 050219: Swift-BAT detection of a burst
  27. GRB050215b: Swift UVOT Detection of Afterglow Emission
  28. GRB 050219: Prompt X-ray position
  29. GRB 050215b: XRT confirmation of IR afterglow candidate
  30. GRB 050215b: Swift XRT Source Variability
  31. GRB 050215B: candidate afterglow
  32. GRB 050215B: UKIRT K-band imaging
  33. GRB 050215b: Swift XRT Observations
  34. GRB050215b: No Swift UVOT Detection of Afterglow Emission
  35. GRB050215a: No Swift UVOT Detection of Afterglow Emission
  36. Swift-BAT detects two bursts: GRB050215a and GRB050215b
  37. GRB 050209(=U11568): Duration and spectrum
  38. GRB 050209 I-band observation
  39. GRB050209 (=U11568): A Long GRB Detected by HETE
  40. Further analysis of the short Swift-BAT GRB 050202
  41. GRB 050202: Short burst detected by Swift-BAT
  42. GRB 050128 Optical observation with REM
  43. SGR1806-20: Swift-BAT detection of a large normal burst
  44. GRB050128: Faulkes Telescope South observations
  45. GRB050126: Updated Swift XRT Position
  46. GRB050128 Swift-BAT observations
  47. GRB 050128: Swift XRT prompt afterglow position
  48. GRB050126: Burst Parameters Measured by BAT
  49. GRB 050126: Prompt XRT detection and localization
  50. GRB050124: No Swift UVOT Detection of Afterglow Emission
  51. GRB 050124 I-band observation
  52. GRB050124: Updated Swift XRT Position and Fluxes
  53. GRB 050124: Swift XRT Detection of X-ray Afterglow Emission
  54. GRB050124: Refined BAT position, spectral and fluence information
  55. GRB050124: Swift-BAT position of a double-peaked burst
  56. GRB 050123 : I-band follow-up observation
  57. GRB 050123(=H3666): A GRB Localized in Real Time by HETE
  58. GRB050117a: Refined analysis
  59. GRB050117b: Swift-BAT detection of a weak burst
  60. GRB050117: Refined XRT position
  61. GRB050117: Swift-BAT detection of a long multi-peaked burst
  62. GRB050117: Swift XRT Position
  63. SGR 1806-20: RXTE/PCA pulse frequency during flare
  64. SGR1806-20: Swift-BAT observations of two additional bursts
  65. SGR1806: Detection of a Sudden Ionospheric Disturbance
  66. SGR1806-20: Swift-BAT observation of the 041227 super-flare
  67. GRB041228: Swift-BAT detection of a burst
  68. GRB041226: Swift-BAT detection of a burst
  69. GRB 041223: XRT afterglow spectrum and light curve
  70. GRB 041223 Fluence measured by Swift-BAT
  71. GRB041224: Swift-BAT detection of a soft burst
  72. GRB041223: optical and NIR observations with REM
  73. Swift-BAT Time History of GRB041219
  74. GRB041223: Swift XRT Detection of X-ray Afterglow Emission
  75. GRB041223: Swift-BAT detection of a bright long burst
  76. GRB041220: Swift-BAT burst
  77. GRB041219c: Third Burst in One Day from Swift-BAT
  78. GRB041219b: A Swift-BAT burst
  79. Swift-BAT detection of the bright long burst GRB041219
  80. GRB 041218: Optical observations
  81. GRB041217: The First GRB Located On-Board Swift
  82. GRB 041211(=H3622): A Long GRB Localized by the HETE WXM and SXC
  83. GRB970815: Discovery of Optical Afterglow
  84. GRB041006: RTT150 Optical Observations
  85. GRB041006: RTT150 Optical Observations
  86. GRB 041016: Optical limits in V, R, I
  87. GRB041006: Fading X-ray Afterglow Observed with Chandra
  88. GRB041006, optical observation in CrAO
  89. GRB041006: Liverpool Telescope optical observations
  90. GRB 041006: Colour measurement
  91. GRB041006: break in the light curve
  92. GRB041006 (= H3570): Chandra Observations In Progress
  93. GRB 041006: Optical decay
  94. GRB 041006 (=H3570): An X-Ray Rich GRB Localized in Real Time by HETE
  95. GRB 041006: Finding chart
  96. GRB 041006: Optical afterglow candidate
  97. GRB040924, RTT150 optical observation
  98. GRB 040924: detection of possible host galaxy by Subaru
  99. GRB040924, RTT150 optical observation
  100. GRB 040924: NIR finding chart

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