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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"

42975 results found.

  1. GRB040924, RTT150 optical observation
  2. GRB040924: KAIT observations
  3. GRB 040924: WSRT Radio Observations
  4. GRB 040924: NIR finding chart
  5. GRB040924 : Optical candidate observations at Lulin observatory
  6. GRB040924 : Optical candidate observations at Lulin observatory
  7. GRB 040924: Subaru NIR observation
  8. GRB040924: Optical afterglow properties
  9. GRB 040924: RTT150 optical observations
  10. GRB 040924, optical follow-up
  11. GRB040924: MASTER: OT decay
  12. GRB040924: MASTER Optical observations
  13. IPN triangulation of GRB040924 (H3564)
  14. GRB 040924(=H3564): A Short, Bright GRB Localized in Real Time by HETE
  15. GRB040924 (H3564): Optical afterglow candidate
  16. XRF 040912: Radio Observations
  17. XRF 040916: Radio Observations
  18. GRB040912(=H3557): Chandra Candidate X-ray Afterglow
  19. XRF040916: continuing decay of OT
  20. TAROT Observations of GRB 040916 (HETE #3558)
  21. GRB040912(=H3557): Candidate Optical Afterglow
  22. XRF040916, optical observations
  23. XRF040916: Optical Transient Candidate by Subaru
  24. GRB040916 optical limits 17 min after GRB
  25. XRF 040912, identification of CXO sources
  26. XRF 040912 (=H3557): Spectral and Temporal Properties
  27. XRF040916, Ic observations
  28. XRF040916: optical follow-up observations
  29. XRF040912, BVRcIc field calibration
  30. XRF040916, BVRcIc field calibration
  31. GRB040916: Archival optical observations
  32. XRF 040916, optical follow-up
  33. GRB040912(=H3557): Observations with the Chandra X-ray Observatory
  34. GRB040916: Optical observations
  35. ROTSE-IIIb Observations of GRB 040916 (HETE #3558)
  36. GRB040916 (= H3558): Improved Localization from HETE WXM
  37. GRB040916 (= H3558): A Long XRF Localized by HETE
  38. GRB040912 (= H3557): Chandra Observations Scheduled
  39. GRB 040912: Optical Observations
  40. GRB 040912, BVRI observations
  41. Optical observations of GRB/XRF 040912 = HETE 3557
  42. An intense burst from SGR1806-20
  43. GRB040912 : Kiso Optical follow-up observation
  44. IBAS GRB Alerts 1978-1980
  45. Optical observations of field of GRB040912
  46. HETE 3557: Optical observations
  47. GRB040912 (= H3557): A Long GRB or XRF Localized by HETE
  48. GRB040903 - A XRF?
  49. GRB040827: analysis of the XMM-Newton observation
  50. GRB040903, REM near-IR observation
  51. GRB 040903 - INTEGRAL data analysis
  52. IBAS Alert 1974. Not a real GRB
  53. Very bright burst detected from SGR 1806-20
  54. ROTSE-III Rapid Response to possible GRB 040903 (INTEGRAL #1972)
  55. Possible GRB 040903 - further analysis
  56. Possible GRB 040903 detected with INTEGRAL
  57. GRB 040827 - Radio Observations
  58. XMM-Newton Images of GRB 040827
  59. GRB 040827: optical and NIR observations at the VLT
  60. GRB 040827: UKIRT - 2nd epoch K-band imaging
  61. GRB 040827: 2nd epoch of Magellan K-band imaging
  62. GRB 040827: K imaging - no evidence of variability
  63. GRB 040827: Detection of NIR afterglow
  64. GRB 040827: Possible detection of optical afterglow
  65. GRB 040827: RTT150 optical observations
  66. GRB040827 XMM-Newton observation
  67. GRB040825A: optical limit before GRB
  68. MASTER: GRB040827 possible OT
  69. GRB 040825B: Optical observations
  70. GRB040827 optical observations
  71. GRB 040827 - Refined position
  72. GRB 040827 : peak flux
  73. GRB 040827 - A long GRB detected by INTEGRAL
  74. GRB040825B, BVRcIc field photometry
  75. GRB040825A, BVRcIc field photometry
  76. Increase of SGR 1806-20 activity
  77. GRB040825A: optical observations
  78. GRB040825B: optical observations
  79. GRB040825B (=H3510): An XRF Localized in Real Time by HETE
  80. MASTER: GRB040825a optical observation
  81. MASTER: GRB040825b optical observation
  82. GRB 040825: Optical observations
  83. XRF040812: possible afterglow second Chandra observation
  84. GRB 040812: Second epoch CXO Observations
  85. XRF040812: GMRT observations
  86. Triangulation of GRB 040816 (Konus-Wind - Helicon-Coronas-F)
  87. XRF 040812: optical observation at VLT
  88. GRB 040812: Optical counterparts of CXO sources
  89. XRF040812: possible afterglow
  90. CXO observation of GRB 040812
  91. Bursting activity from SGR 1806-20 detected with IBAS
  92. IPN/HETE localizations of GRB040810 (=H3489)
  93. GRB 040812: Keck and LCO optical observations
  94. GRB 040812: Keck and LCO observations
  95. GRB 040812: radio observations
  96. GRB040812, optical/IR observations
  97. Konus-Wind observation of GRB040810 (=H3489)
  98. GRB 040812: a long GRB detected by INTEGRAL
  99. GRB 040810: Optical observations of a limited region
  100. XRF040701: Optical Observations at ESO

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