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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"

10956 results found.

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

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