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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_MC170405_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"

10933 results found.

  1. XRF030723 (= H2777): Chandra Observations Scheduled
  2. XRF030723 (=H2777): An X-ray Flash Localized by the HETE WXM and
  3. H2768, H2770, and H2771: Three Bursts from SGR1806-20
  4. GRB030329: RTT150 optical observations
  5. IPN detection of renewed activity from SGR1806-20
  6. HETE detection of burst from SGR1806-20
  7. GRB030528(=H2724): X-ray Afterglow Identified in Second Epoch
  8. GRB 030528: Optical Observations
  9. GRB030528(=H2724): Observations with the Chandra X-ray Observatory
  10. GRB030528: Chandra TOO Planned
  11. GRB030528(=H2724): Revised SXC Localization
  12. GRB 030329: optical observations
  13. GRB030528 (H2724): A long GRB localized by HETE
  14. GRB 030329: HST ACS Observations of the Host
  15. GRB 030329 Optical Observations
  16. GRB030324: Further Observations of the Candidate Optical Afterglow
  17. GRB030519B (=H2716): Peak Fluxes, Fluences, and Energy Spectrum
  18. IPN triangulation of GRB030519B=H2716 (small error box)
  19. GRB 030418: Second Epoch Optical Observations with Magellan
  20. GRB030519B (=H2716): A Long, Bright GRB Localized by the HETE WXM
  21. IPN triangulation of GRB030519 (annulus)
  22. IPN triangulation of GRB030518A (annulus)
  23. GRB030329: RTT150 optical observations
  24. GRB 030329: Optical limit (contemporaneous photography)
  25. GRB030429: RTT150 optical obs., correction to GCN 2208
  26. GRB 030329: High-Resolution Spectroscopy of the Host
  27. GRB030429 (=H2695): A Long GRB Localized by the HETE WXM and SXC
  28. GRB030418 (=H2686): A Long, X-Ray-Rich GRB Localized by the HETE WXM
  29. XRF030416 (=U10897): An X-Ray Flash Localized by the HETE WXM
  30. GRB030429: RTT150 optical observations, a possible host galaxy
  31. GRB030329: RTT150 optical observations and upper limit for a host
  32. GRB030329: RTT150 optical observations and upper limit for a host
  33. GRB 030429: IR photometry with IRSF/SIRIUS
  34. GRB 030329, the review of the sky area in plate archive (1950-1998)
  35. Optical Observations of GRB 030418 with Magellan
  36. GRB 030329: optical spectropolarimetry at VLT
  37. GRB030329: 444 AAVSO Measurements
  38. GRB030418: Upper limits from recent and historical observations.
  39. GRB 030418: Optical afterglow candidate
  40. GRB030329: VR Photometry at TNG
  41. GRB030324: Candidate Optical Afterglow
  42. GRB 030413: Optical Observations
  43. IPN triangulation of GRB030413 (small error box)
  44. IPN triangulation of GRB050403 (small error box)
  45. IPN triangulation of GRB030403 (annulus)
  46. GRB 030329: BVRI photometry at Asiago
  47. GRB 030329: VLT V-band photometry
  48. GRB 030329: Supernova Confirmed
  49. GRB030329: RTT150 optical observations
  50. GRB030329: RTT150 optical observations
  51. GRB 030329: Supernova Spectrum Emerging
  52. GRB030329: RTT150 optical observation
  53. GRB 030329, Optical observations
  54. GRB030329: final R-band light curve by MASTER
  55. GRB030329 Radio 23/43/90 GHz observations at Nobeyama
  56. GRB030329: optical observations at Tokyo Tech
  57. GRB 030329: optical observations
  58. GRB030328: Full Observation, X-ray Fading and Spectrum Measured
  59. GRB030329: Optical observations at Teramo
  60. GRB 030329: beginning of the new fading phase in optical band
  61. GRB 030329, optical spectroscopy
  62. GRB 030329: optical photometry
  63. GRB 030329: further optical observations
  64. GRB030329: R and B observations
  65. GRB030328: X-ray Fading and Spectrum Measured with Chandra
  66. GRB 030329: Light curve observed during the change of its slope.
  67. GRB 030329: Optical Decay
  68. GRB030329: optical spectroscopy with the TNG
  69. GRB030328: X-ray Afterglow Observed with Chandra
  70. GRB 030329: optical observations
  71. GRB030329: Upper limits from recent and historical observations.
  72. GRB030329 (=H2652): A Long, Extremely Bright GRB Localized by the HETE WXM and SXC
  73. GRB 030328: optical observations
  74. GRB030328: optical spectroscopy at TNG
  75. GRB030328: optical photometry at the TNG
  76. GRB030328 (=H2650): A Long, Bright GRB Localized by the HETE WXM and SXC
  77. Re: GRB 030328: Finding chart
  78. GRB030324, optical observations
  79. GRB030323: Upper limits from recent and historical observations.
  80. GRB030323 (=H2640): A Faint, Long GRB Localized by the HETE WXM and SXC
  81. GRB030324 (=H2641): A Long GRB Localized in Real Time by the HETE WXM
  82. GRB030324 (=H2641): A Long GRB Localized in Real Time by the HETE WXM
  83. GRB 030324, optical observations
  84. IPN triangulation of GRB030320B (annulus)
  85. GRB030226, addendum to GCN 1892
  86. IPN upper limit to a GRB associated with SN2003L
  87. IPN triangulation of GRB030317 (annulus)
  88. IPN triangulation of GRB030307 (annulus)
  89. GRB030226: Optical observations at Asiago
  90. GRB 030227: Optical observations
  91. IPN triangulation of GRB030301 (annulus)
  92. 030302: NOT A GRB
  93. 030228: NOT A GRB
  94. GRB 030226: R band polarimetric observations
  95. GRB 20030226: Upper limits from recent and historical observations
  96. GRB030227 - faint tentative OT candidate
  97. XMM-Newton observation of GRB030227
  98. GRB030226: ESI spectroscopy
  99. GRB030226 (=U10893): A Long GRB Localized by the HETE WXM and SXC
  100. GRB030226: optical observations and refined redshift

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