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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.

"N/A_MC170720_R1" does not adhere to advanced search syntax. Please refer to the documentation and try again.
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').
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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"

10957 results found.

  1. GRB030913: OT's limit by MASTER
  2. GRB030913 (=H2849): Confirmation of the Flight Localization
  3. Magellan Observations of GRB030725 (=H2779)
  4. GRB030913 (=H2849): A GRB Possibly Localized by HETE
  5. IPN triangulation of GRB030822 (annulus)
  6. GRB030823: optical observation at Tokyo Tech
  7. IPN triangulation of GRB030821 (=H2814; refined error box)
  8. GRB 030821(=H2814): A Faint, Long GRB Localized by the HETE WXM and the IPN
  9. Summary of recent IPN and HETE detections of SGR bursts
  10. IPN triangulation of GRB030814 (annulus)
  11. 030813 SGR event (Konus-Wind observation)
  12. SGR 1808-20 (=H2802): A Possible new SGR
  13. XRF030723(=H2777): Chandra Fading X-ray Afterglow Confirmed
  14. IPN/HETE summary of recent bursts from SGR1806-20
  15. XRF030723: Re-analysis of ROTSE-III early images
  16. IPN triangulation of GRB030725 (=H2779; small error box)
  17. XRF030723 (=H2777): Second Epoch Magellan Observations
  18. IPN triangulation of GRB030726 (large error box)
  19. XRF 030723: confirmation of fading optical counterpart
  20. XRF030723(=H2777): Chandra Observations
  21. Magellan Observations of XRF030723 (=H2777)
  22. GRB030723: Upper limits from historical observations
  23. GRB030725, possible optical transient
  24. GRB030725 (=H2779): A Bright GRB Localized by HETE
  25. XRF030723 (= H2777): Chandra Observations Scheduled
  26. XRF030723 (=H2777): An X-ray Flash Localized by the HETE WXM and
  27. H2768, H2770, and H2771: Three Bursts from SGR1806-20
  28. GRB030329: RTT150 optical observations
  29. IPN detection of renewed activity from SGR1806-20
  30. HETE detection of burst from SGR1806-20
  31. GRB030528(=H2724): X-ray Afterglow Identified in Second Epoch
  32. GRB 030528: Optical Observations
  33. GRB030528(=H2724): Observations with the Chandra X-ray Observatory
  34. GRB030528: Chandra TOO Planned
  35. GRB030528(=H2724): Revised SXC Localization
  36. GRB 030329: optical observations
  37. GRB030528 (H2724): A long GRB localized by HETE
  38. GRB 030329: HST ACS Observations of the Host
  39. GRB 030329 Optical Observations
  40. GRB030324: Further Observations of the Candidate Optical Afterglow
  41. GRB030519B (=H2716): Peak Fluxes, Fluences, and Energy Spectrum
  42. IPN triangulation of GRB030519B=H2716 (small error box)
  43. GRB 030418: Second Epoch Optical Observations with Magellan
  44. GRB030519B (=H2716): A Long, Bright GRB Localized by the HETE WXM
  45. IPN triangulation of GRB030519 (annulus)
  46. IPN triangulation of GRB030518A (annulus)
  47. GRB030329: RTT150 optical observations
  48. GRB 030329: Optical limit (contemporaneous photography)
  49. GRB030429: RTT150 optical obs., correction to GCN 2208
  50. GRB 030329: High-Resolution Spectroscopy of the Host
  51. GRB030429 (=H2695): A Long GRB Localized by the HETE WXM and SXC
  52. GRB030418 (=H2686): A Long, X-Ray-Rich GRB Localized by the HETE WXM
  53. XRF030416 (=U10897): An X-Ray Flash Localized by the HETE WXM
  54. GRB030429: RTT150 optical observations, a possible host galaxy
  55. GRB030329: RTT150 optical observations and upper limit for a host
  56. GRB030329: RTT150 optical observations and upper limit for a host
  57. GRB 030429: IR photometry with IRSF/SIRIUS
  58. GRB 030329, the review of the sky area in plate archive (1950-1998)
  59. Optical Observations of GRB 030418 with Magellan
  60. GRB 030329: optical spectropolarimetry at VLT
  61. GRB030329: 444 AAVSO Measurements
  62. GRB030418: Upper limits from recent and historical observations.
  63. GRB 030418: Optical afterglow candidate
  64. GRB030329: VR Photometry at TNG
  65. GRB030324: Candidate Optical Afterglow
  66. GRB 030413: Optical Observations
  67. IPN triangulation of GRB030413 (small error box)
  68. IPN triangulation of GRB050403 (small error box)
  69. IPN triangulation of GRB030403 (annulus)
  70. GRB 030329: BVRI photometry at Asiago
  71. GRB 030329: VLT V-band photometry
  72. GRB 030329: Supernova Confirmed
  73. GRB030329: RTT150 optical observations
  74. GRB030329: RTT150 optical observations
  75. GRB 030329: Supernova Spectrum Emerging
  76. GRB030329: RTT150 optical observation
  77. GRB 030329, Optical observations
  78. GRB030329: final R-band light curve by MASTER
  79. GRB030329 Radio 23/43/90 GHz observations at Nobeyama
  80. GRB030329: optical observations at Tokyo Tech
  81. GRB 030329: optical observations
  82. GRB030328: Full Observation, X-ray Fading and Spectrum Measured
  83. GRB030329: Optical observations at Teramo
  84. GRB 030329: beginning of the new fading phase in optical band
  85. GRB 030329, optical spectroscopy
  86. GRB 030329: optical photometry
  87. GRB 030329: further optical observations
  88. GRB030329: R and B observations
  89. GRB030328: X-ray Fading and Spectrum Measured with Chandra
  90. GRB 030329: Light curve observed during the change of its slope.
  91. GRB 030329: Optical Decay
  92. GRB030329: optical spectroscopy with the TNG
  93. GRB030328: X-ray Afterglow Observed with Chandra
  94. GRB 030329: optical observations
  95. GRB030329: Upper limits from recent and historical observations.
  96. GRB030329 (=H2652): A Long, Extremely Bright GRB Localized by the HETE WXM and SXC
  97. GRB 030328: optical observations
  98. GRB030328: optical spectroscopy at TNG
  99. GRB030328: optical photometry at the TNG
  100. GRB030328 (=H2650): A Long, Bright GRB Localized by the HETE WXM and SXC

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