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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_MC151008_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"

10955 results found.

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

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