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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"

39292 results found.

  1. XMM-Newton Images of GRB 040827
  2. GRB 040827: optical and NIR observations at the VLT
  3. GRB 040827: UKIRT - 2nd epoch K-band imaging
  4. GRB 040827: 2nd epoch of Magellan K-band imaging
  5. GRB 040827: K imaging - no evidence of variability
  6. GRB 040827: Detection of NIR afterglow
  7. GRB 040827: Possible detection of optical afterglow
  8. GRB 040827: RTT150 optical observations
  9. GRB040825A: optical limit before GRB
  10. GRB 040825B: Optical observations
  11. GRB040827 optical observations
  12. GRB 040827 : Planned XMM-Newton observation
  13. GRB 040827 - Refined position
  14. GRB 040827 : peak flux
  15. GRB 040827 - A long GRB detected by INTEGRAL
  16. GRB040825B, BVRcIc field photometry
  17. GRB040825A, BVRcIc field photometry
  18. GCN GRB OBSERBATION REPORT
  19. GRB 040825A,optical observations
  20. Increase of SGR 1806-20 activity
  21. GRB 040825A: Optical observations.
  22. GRB040825B: Correction to GCN 2657
  23. GRB 040825: Optical observations
  24. GRB 040812: Second epoch CXO Observations
  25. GRB040823,optical observation
  26. Triangulation of GRB 040816 (Konus-Wind - Helicon-Coronas-F)
  27. XRF 040812: optical observation at VLT
  28. GRB 040812: Optical counterparts of CXO sources
  29. XRF040812: possible afterglow
  30. CXO observation of GRB 040812
  31. IPN/HETE localizations of GRB040810 (=H3489)
  32. GRB 040812: Keck and LCO optical observations
  33. GRB 040812: Keck and LCO observations
  34. GRB 040812: radio observations
  35. GRB040812, optical/IR observations
  36. Konus-Wind observation of GRB040810 (=H3489)
  37. GRB 040812: a long GRB detected by INTEGRAL
  38. GRB 040810: Optical observations of a limited region
  39. XRF040701: Optical Observations at ESO
  40. IPN/HETE triangulation of GRB040802 (=H3485)
  41. GRB 040730, infrared observations
  42. GRB 040730: Optical observations
  43. GRB 040730: a long GRB detected with INTEGRAL
  44. Ongoing activity of SGR 1806-20
  45. GRB040624: optical monitoring at TNG
  46. Cancellation of IBAS/INTEGRAL GRB alerts
  47. IBAS Alert 1836: NOT a real GRB
  48. GRB040709 J,H-band observations
  49. GRB 040624: optical observations
  50. GRB 040624: optical observations at TNG and VLT
  51. MASTER: GRB 040624 optical observation after 0,48d
  52. GRB 040624: R-band observations
  53. GRB 040624, optical observations
  54. GRB 040624 - A long GRB detected with INTEGRAL
  55. GRB 030329: Rebrightening of hyperluminal ejecta.
  56. IPN Summary of SGR1806-20 Activity in 2004
  57. GRB040511: Retraction of redshift identification
  58. MASTER:HETE Alert 3259 (SRG1806-20) optical observation
  59. GRB 040606: Optical observations
  60. MASTER: HETE Alert 3274 optical observation
  61. Activivty of SGR 1806-20
  62. IPN triangulation of an intense intermediate burst from SGR1806-20
  63. GRB 040511, very fast decay?
  64. GRB 030324: Detection and Color of Host Galaxy
  65. GRB 040511: NIR observations with REM
  66. GRB040511: Redshift identifcation
  67. GRB 040511: Optical limit
  68. IBAS GRB Alerts n.1785 to 1791
  69. GRB 040511: ROTSE-III Rapid Optical Upper Limits
  70. GRB 040511: Second Epoch Optical Observations
  71. IBAS GRB Alerts 1781-4
  72. GRB 040511: Optical observations
  73. GRB 040511: Optical Observations
  74. GRB040511: Optical Observations
  75. GRB040511: Optical Observations
  76. GRB040511 (=H3218): A Long GRB Localized by HETE WXM and SXC
  77. IBAS GRB Alert number 1774: NOT a real GRB
  78. Type Ic SN2001em (off-axis GRB jet?), optical spectrum
  79. IBAS Alerts 1771 and 1772: NOT a real GRB
  80. GRB and XRF on April 27, 2004. Detection by Konus-Wind and Helicon (Coronas-F)
  81. IPN triangulation of GRB040425 (=H3183)
  82. GRB040422: optical observations at CrAO
  83. GRB 040423 (=H3175): A Long GRB Localized by HETE
  84. GRB 040422: ROTSE-IIIb Prompt Optical Limits
  85. GRB040422, BVRcIc field calibration
  86. GRB 040422,optical observation
  87. GRB 040422: a long GRB detected with INTEGRAL
  88. GRB 040403, deep optical observations
  89. INTEGRAL-SPI/ACS GRB data: timing correction
  90. IBAS GRB alerts 1739, 1740, 1741
  91. HETE/IPN localization of GRB040403A (=H3143, a long burst) and GRB040403B(=H3144, a short/hard burst)
  92. GRB 040403: Optical Observations
  93. GRB 040403 Optical Observations
  94. GRB 040403: Optical observations
  95. GRB 040403: optical observations
  96. GRB 040403: Optical Observations
  97. GRB 040403: a long GRB detected with INTEGRAL
  98. GRB 040329: hard burst detected by Konus-Wind and Helicon - Coronas-F
  99. IBAS GRB Alert 1694
  100. GRB 040319 (=H3128): An X-Ray-Rich GRB Localized by the HETE-2 WXM and SXC

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