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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"

5862 results found.

  1. GRB 130912A: RATIR Optical and NIR Upper Limits
  2. GRB 130907A: Continued RATIR Optical and NIR Observations
  3. GRB 130912A: P60 Observations
  4. GRB 130907A: MASTER refined analysis
  5. GRB 130912A: Skynet DSO-14/Yerkes-41/PROMPT-CTIO observations
  6. GRB 130907A: Continued RATIR Optical and NIR Observations
  7. GRB 130907A: RATIR Optical and NIR Observations
  8. GRB 130828A: Further Swift XRT observations
  9. GRB 130907A: INTEGRAL/SPI-ACS light curve
  10. GRB 130907A: RATIR Optical and NIR Afterglow Confirmation
  11. GRB 130907A: Skynet DSO-14/Yerkes-41 detections of a possible afterglow
  12. GRB 130831A: Maidanak optical observations
  13. GRB 130831A: optical observation in Chuguev AO
  14. GRB 130907A: MASTER early OT observations
  15. GRB 130831A: RATIR Optical and NIR Upper Limits
  16. GRB 130903A: GROND Afterglow Discovery
  17. GRB 130903A: MASTER early optical limit
  18. GRB 130903A: ISON-Kislovodsk optical Upper Limits
  19. GRB 130831A: RATIR Optical and NIR Observations
  20. GRB 130831A: Continued Skynet/PROMPT-SSO, PROMPT-CTIO and Yerkes-41 detections
  21. Swift Trigger 569022: a possible GRB
  22. GRB 130831A: THO optical observation
  23. GRB 130831A: Montarrenti Observatory optical observations
  24. GRB 130831A: Faulkes Telescope North and South optical afterglow
  25. IPN triangulation of GRB 130828A
  26. GRB 130623A: GROND detection of the optical/NIR afterglow
  27. IPN localization of GRB 130804A
  28. SGR 1745-29 (Swift trigger 565443), Swift-BAT refined analysis
  29. GRB 130804A; Fermi GBM observation
  30. Trigger 565443: Swift detection of a burst from SGR J1745-29
  31. GRB 130719A: Skynet/PROMPT observations
  32. GRB 130722A: Swift detection of a burst
  33. GRB 130708A: Swift XRT and UVOT Observations
  34. Fermi394416326: FTN detection
  35. GRB 130701A: MITSuME Akeno Optical observation
  36. GRB 130701A: VLT/X-shooter redshift
  37. GRB 130627A: Swift-XRT observations
  38. GRB 130627A: Swift detection of a burst
  39. Swift Trigger 558828 is not an interesting event
  40. Fermi/GBM observation of the Soft Gamma Repeater SGR J1550-5418
  41. Trigger 558399: Swift detection of the Soft Gamma Repeater AXP 1E1547.0-5408
  42. GRB 130615A: Skynet/PROMPT Observations
  43. GRB 130615A: Enhanced Swift-XRT position
  44. GRB 130615A: Swift-BAT refined analysis
  45. GRB 130615A: GROND afterglow candidate
  46. GRB 130615A: Swift detection of a burst
  47. GRB 130612A: NOT optical observations
  48. GRB 130609B: Fermi GBM observation
  49. GRB 130609B: GROND observations
  50. GRB 130608A: ISON-Kislovodsk optical upper limit
  51. GRB 130609B: Swift detection of a burst with an optical counterpart
  52. GRB 130609A: Fermi GBM observation
  53. Swift Trigger 557674 was due to an onboard position error
  54. GRB 130606A: VLT/X-shooter redshift confirmation
  55. GRB 130606A: Swift detection of a burst
  56. GRB 130604A: Swift detection of a burst
  57. GRB 130603A: MITSuME Okayama Optical Observation
  58. GRB 130529A: Swift detection of a burst
  59. GRB 130527A: Swift detection of a bright burst
  60. GRB 130521A: Swift detection of a burst
  61. GRB 130514A: Swift detection of a burst
  62. GRB 130427A: Keck/LRIS Observations
  63. GRB 130505B: Swift Candidate Afterglow
  64. Refined IPN Triangulation of GRB 130502B
  65. GRB 130505B: MAXI/GSC detection
  66. GRB 130502A: optical upper limit
  67. Swift/UVOT observations of GRB130505A
  68. GRB 130505A: iTelescope T12 optical observations
  69. GRB 130505A: MITSuME Okayama Optical Observation
  70. GRB 130505A: MAXI/GSC detection
  71. GRB 130504A: IAC80 optical candidate
  72. GRB 130505A: Swift detection of a burst with optical afterglow
  73. GRB 130504A: MITSuME Okayama upper limits
  74. GRB 130504A: Enhanced XRT position
  75. Swift-XRT X-ray afterglow candidate for GRB 130504A (BAT trigger 555096)
  76. IPN Triangulation of GRB 130502B
  77. GRB 130502A: TNG candidate counterpart
  78. GRB 130427A: Nishi-Harima Optical Spectroscopic Observations
  79. GRB 130427A optical time series
  80. GRB 130427A: MITSuME Okayama Optical Observation
  81. GRB 130427B: Swift detection of a burst with optical counterpart
  82. GRB 130427A: Gemini-North redshift
  83. IPN Triangulation of GRB 130425A
  84. GRB 130418A: T21 optical observation
  85. GRB 130418A: T18 and T21 optical observations
  86. GRB 130418A: Swift/UVOT Detection and request for continuing coverage
  87. GRB 130418A: Swift detection of a burst with an optical counterpart
  88. GRB 130408A: SMARTS optical/IR afterglow observations
  89. Swift XRT observations of GRB 130310A
  90. GRB 130310A : Suzaku WAM observation of the prompt emission
  91. GRB 130313A: MASTER-Net optical observations
  92. GRB 130313A: Swift detection of a short burst
  93. GRB 130310A: optical observations
  94. Swift XRT observations of GRB 130310A
  95. Konus-Wind observation of GRB 130310A
  96. IPN triangulation of GRB 130310A
  97. GRB 130310A: Fermi GBM detection
  98. GRB 130310A: Fermi-LAT detection and localization
  99. GRB 130215A: Additional P200 NIR observations
  100. GRB 130215A: MITSuME Okayama Optical Observation

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