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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.

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subject:"Swift"
body:"GRB"
submitter:"Judith Racusin"

19223 results found.

  1. Spectropolarimetry of GRB 020813
  2. GRB020813: optical afterglow
  3. GRB020812(=H2257): A Long Burst Localized by HETE in Near-Real Time
  4. GRB020801: Imaging of Suggested OT Counterpart at the Magellan
  5. HST Imaging of the Host of GRB 011121
  6. GRB020331: Late-time Optical Light Curve (re-submission)
  7. GRB020331: Late-time Optical Light Curve
  8. IPN triangulation of GRB020714
  9. IPN triangulation of GRB020715 (=GRB150702)
  10. IPN triangulation of GRB020714
  11. IPN triangulation of GRB150702
  12. GRB 020124, HST observations of the fading afterglow
  13. IPN triangulation of GRB020708
  14. IPN triangulation of GRB020708
  15. Correction to IPN error box for GRB020706
  16. IPN triangulation of GRB020706
  17. GRB 020625, optical observations
  18. GRB020625 (=H2081): A Long Burst Localized by HETE
  19. The Probable Host Galaxy of GRB/XRF 020427
  20. GRB/XRF 020427, detection of an underlying system with the VLT
  21. SGR-like Bursts from the AXP 1E 2259+586
  22. GRB 020531, simultaneous optical observations
  23. GRB 020531/Candidate Redshift
  24. GRB020531: Detection of Candidate Host Galaxy
  25. GRB020531: Second epoch Chandra observations
  26. GRB020531 Optical observations with TAROT
  27. GRB020531 Optical observations with TAROT
  28. IPN triangulation of GRB020604
  29. GRB020531 Optical Observations
  30. GRB020531: Observations with the Chandra X-ray Observatory
  31. GRB020531, optical observations
  32. GRB020531: optical observations
  33. GRB020531: Optical observations
  34. GRB020531(=H2042): A Short, Hard Burst Localized by HETE
  35. IPN triangulation of GRB020525
  36. HETE Observations of GX354-0 (= MXB1728-34, so-called "Slow
  37. XRF020427: Chandra Identification of a Likely X-ray Counterpart
  38. HST detection of the likely host galaxy of GRB 020124
  39. XRF020427: Chandra Observations and Candidate X-ray Counterparts
  40. GRB(XRF) 020427: X-ray afterglow with BeppoSAX
  41. GRB020321 : Optical observations.
  42. XRF 020427
  43. GRB 020124: Optical observations
  44. IPN triangulation of GRB020418
  45. GRB020405: VLT observations of the OT environment
  46. IPN triangulation of GRB020413
  47. GRB020405: predicted break
  48. GRB 020331 Kyoto observation on March 31
  49. GRB020410: BeppoSAX NFI observation
  50. GRB020406(?), optical observations
  51. X-ray afterglow of GRB020321
  52. GRB 020321: Candidate X-ray Counterparts
  53. GRB020406(?), optical observations
  54. GRB 020405: Decay index
  55. Short RXTE/ASM transient 020406; may be a GRB
  56. GRB011212: Optical Observations
  57. GRB 020331: NIR Observations
  58. GRB020331 NIR observation at KPNO (re-submission)
  59. GRB02033 NIR observation at KPNO
  60. GRB 020331, NIR observations
  61. GRB020331(=H1963): The "Easter" Burst Detected by HETE
  62. Near-Infrared Observations of GRB020322 at TIRGO
  63. GRB 020321, Radio Observations
  64. GRB020127: Proposed Host Galaxy Detection and Identification of Afterglow
  65. GRB020321: a faint BeppoSAX detection
  66. GRB 020317 : KISO Optical Observations
  67. GRB020317 (=H1959): Localization by HETE of a Low Fluence GRB
  68. GRB 020305: Optical Observations
  69. GRB 011121: Third HST Epoch
  70. GRB020305: Properties of the Candidate Optical Afterglow
  71. GRB 011121: HST Observations reveal an intermediate-time multicolor
  72. GRB011130 (XRF011130) Second Epoch Chandra Observations
  73. GRB020305: Subaru Optical Observations
  74. XRF/GRB 011030: Detection of the Probable Host Galaxy
  75. GRB 020305: Candidate optical afterglow
  76. GRB020305, optical observations
  77. IPN triangulation of GRB020305 (HETE 1939)
  78. GRB020305 (=H1939): Localization of a GRB by HETE
  79. HST Imaging of the afterglow and host of GRB 011121
  80. IPN detection and localization of Cygnus X-1 flares
  81. SGR1900+14 activity
  82. IPN/HETE Detection of Bursts from SGR1900+14
  83. IPN Upper Limits to a GRB Associated With SN2002ap
  84. GRB020127: Comparison of Chandra Epochs and Identification of Possible Counterparts
  85. SN2002ap (SN/GRB?) Echelle spectra
  86. SN 2002ap in M74
  87. GRB020127: Chandra Observations and Prospective Counterparts
  88. pre-SN2002ap (SN/GRB?) imaging of M74
  89. Type Ib/c SN2002ap (SN/GRB?)
  90. Type Ib/c SN2002ap (SN/GRB?) Radio Observations
  91. GRB020124, optical observations
  92. GRB 020127, I-band observations starting 3.14-hr after the event
  93. GRB020127(=H1902): Localization of a Double-Peaked GRB by HETE
  94. GRB 020124: Optical afterglow
  95. GRB020124(=H1896): Localization of a Long GRB by HETE
  96. GRB011211: BeppoSAX/GRBM data
  97. GRB 011211: Detection of the Probable Host Galaxy
  98. GRB 011130 and GRB 011212 - Milagro GeV/TeV Observations
  99. GRB 011130, Radio/X-ray Comparison
  100. GRB 011211: TNG Spectroscopic Observations

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