Skip to main content
JSON Notices via Email, Kafka Cron Jobs, Submitter Profile, GCN is Hiring. See news and announcements

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.

Advanced Search Examples (click to copy):

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

15389 results found.

  1. GRB 111209A: REM NIR detection
  2. GRB 111207A found in ground analysis of BAT data
  3. Konus-Wind observation of GRB 111205A
  4. GRB 110921A: optical observations in Maidanak observatory
  5. GRB 111121A: Suzaku WAM observation of the prompt emission
  6. GRB 111123A: correction to GCN 12593
  7. GRB 111123A: TNG NIR detection of the afterglow candidate
  8. Konus-Wind observation of GRB 111121A
  9. GRB 111117A: Chandra detection of the afterglow
  10. GRB 111117A: Fermi GBM observation
  11. GRB 111117A: further NOT observations
  12. GRB 111117A: TNG observations
  13. GRB 111117A: GROND observations
  14. GRB 111117A: Gemini host observation
  15. GRB111117A: Magellan IMACS observations
  16. GRB111107A: Further ATCA observations - no detection
  17. GRB 111117A: NOT observations
  18. Konus-Wind observation of GRB 111113A
  19. GRB 111109A: Swift/UVOT Photometry
  20. GRB 111107A: Fermi GBM observation
  21. GRB 111107A: VLT/X-shooter spectroscopy
  22. GRB 111107A: GROND observations
  23. Konus-Wind observation of GRB 111103B
  24. GRB 111103B : WIYN 3.5m NIR observations
  25. GRB 111103A: Fermi GBM observation
  26. GRB111103B Swift/UVOT Upper Limits
  27. Trigger 506913: Swift detection of Swift J1922.7-1716 and its optical counterpart
  28. GRB 111103B: Swift detection of a strong burst from a GRB or Galactic source
  29. GRB 111029A: SAO RAS optical limits
  30. GRB 111026A: spectral lag value inconclusive for a short burst
  31. GRB 111029A: PAIRITEL NIR Upper Limits
  32. GRB 111022B: BTA Optical Observations
  33. GRB 111022B: Gemini infrared observations
  34. GRB 111022A: MASTER-Net early limit
  35. GRB 110918A: Optical light curve for days 1.4 to 16.3
  36. Konus-Wind observation of GRB 111016B
  37. GRB 111018A: GROND Upper Limits
  38. GRB111016A : WIYN 3.5m NIR observations
  39. GRB 111008A : miniTAO/ANIR NIR observations
  40. GRB 111008A: Swift/UVOT Upper Limits
  41. Konus-Wind observation of GRB 111008A
  42. GRB 111008A: IAC80 I-band observations
  43. GRB 111008A: NOT optical observation
  44. GRB 111005A: ATCA 18 GHz detection
  45. GRB 111005A: VLT IR observations
  46. GRB 111003A: Fermi GBM detection
  47. GRB 110921A: MITSuME-Akeno Optical photometry
  48. Trigger 504307: Swift detection of MAXI J1836-194
  49. GRB 110825A: GROND Observations
  50. GRB 110928A: Further PAIRITEL NIR Observations
  51. GRB110918A: Lick Observations
  52. GRB 110921A: NOT observations
  53. GRB 110921A: Fermi GBM observation
  54. GRB 110915B : X-ray afterglow confirmation
  55. GRB 110918A: rest-frame energetics in gamma-gays
  56. GRB 110918A optical observation
  57. GRB 110918A: Gemini-N redshift
  58. GRB 110918A: GROND detection of the afterglow candidate
  59. GRB 110918A: INT optical detection of Swift candidate afterglow
  60. Konus-Wind observation of GRB 110918A
  61. GRB110918A: BOOTES-1 optical limit
  62. GRB 110915A: Konus-Wind and Swift/BAT joint spectral analysis
  63. IPN triangulation of GRB 110918A (long duration, extremely intense)
  64. GRB 110915B: GROND Observations of the Optical/NIR Afterglow Candidate
  65. GRB 110915A: Swift/UVOT Upper Limits
  66. GRB 110915A: GROND Upper limits
  67. GRB 110903A: Suzaku WAM observation of the prompt emission
  68. GRB 110915A: Deep Gemini-South i/z-band imaging
  69. GRB 110915A: NOT observations
  70. GRB 110915B: SuperAGILE localization of a long GRB
  71. GRB 110731A: SAO RAS and Terskol observations
  72. GRB 110906A(?): Burst detection (unconfirmed) from Swift-BAT slew data
  73. GRB 110905A / X-ray transient MAXI J1836-194: TNT optical observation
  74. GRB 110905A: Potential BAT trigger on MAXI J1836-194
  75. GRB 110903A: Fermi GBM observation
  76. GRB 110903A: Swift/UVOT Upper Limits
  77. Konus-Wind observation of GRB 110903A
  78. GRB 110903A: a long GRB detected by INTEGRAL
  79. GRB 110825A: Suzaku WAM observation of the prompt emission
  80. GRB 110825A: optical afterglow candidate
  81. IPN triangulation of GRB110825A (very intense, long-duration)
  82. Konus-Wind observation of GRB 110820B
  83. GRB 110820A: i-band finding chart + correction to 12295
  84. GRB 110818A: Fermi GBM observation
  85. GRB 110815A : Suzaku WAM observation of the prompt emission
  86. Konus-Wind observation of GRB 110815A
  87. GRB 110801A: Konus-Wind and Swift/BAT joint spectral analysis
  88. GRB 110812A: SuperAGILE localization of a long GRB.
  89. Konus-Wind observation of GRB 110808B
  90. Konus-Wind observation of GRB 110808A
  91. SGR J1834.9-0846: A Neutron Star in W41?
  92. Swift SGR 1834.9-0846: Swift-BAT refined analysis
  93. GRB 110726A: two epochs of SAO RAS optical observations
  94. Konus-Wind observation of GRB 110802A
  95. IPN triangulation of GRB110802A (short/hard burst)
  96. GRB 110731A : Suzaku WAM observation of the prompt emission
  97. GRB110731A: MOA optical observations of the steeply fading afterglow
  98. GRB 110801A: SAO RAS optical observations
  99. GRB110801A: MITSuME Ishigakijima Optical Observation at 1 day after the burst
  100. GRB 110801A: Afterglow redshift from 10.4m GTC

Advanced

Download all Circulars as a .tar.gz archive (updated once a day):
Questions or comments?
Contact GCN directly.
Have you found a bug in GCN?
Open an issue.
Want to contribute code to GCN?
Get involved on GitHub.

gcn.nasa.gov

A service of the Astrophysics Science Division at NASA Goddard Space Flight Center

Looking for U.S. government information and services? Visit USA.gov