GCN Circulars Archive

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1. The Latest Circulars
2. Older Circulars
3. Bursts of Special Interest

This is the archive of the GCN Observation Report Circulars.

To learn more about the GCN Circulars and how to subscribe.

Please see the request for comments (RFC) on the discussion of proper content for these Circulars (i.e. Are theory-content Circulars to be allowed). [31 Jan 99]
Also see the addendum to the RFC. [04 Feb 99]
And see the Results of the RFC. [16 Feb 99]

(Listed in reverse serial number order -- newest first)

• 7955 New Swift-XRT GRB products available online.
  
• 7954 GRB 080707: GROND Confirmation of the Optical Afterglow
  
• 7953 UVOT observations of GRB080707
  
• 7952 GRB 080707, Swift-BAT refined analysis
  
• 7951 GRB 080707: Swift XRT refined analysis
  
• 7950 GRB 080707: Enhanced Swift-XRT position
  
• 7949 GRB 080707: VLT redshift
  
• 7948 GRB 080707: GROND Detection of the Optical Afterglow Candidate
  
• 7947 GRB 080707: Swift detection of a burst
  
• 7946 Refined analysis of Swift Trigger 316063, is IGR J08408-4503
  
• 7945 Trigger 316063: Swift detection of a transient
  
• 7944 GRB 080703: GROND Upper Limits
  
• 7943 GRB 080702B: GROND Upper Limits
  
• 7942 GRB 080703: Swift-XRT refined analysis
  
• 7941 GRB 080703: UVOT Follow-Up Observation
  
• 7940 GRB 080703: VLT observations of the afterglow
  
• 7939 GRB 080703: Enhanced Swift-XRT position
  
• 7938 GRB 080703, Swift-BAT refined analysis
  
• 7937 GRB 080702B Swift-BAT refined analysis
  
• 7936 GRB 080703: Swift detection of a burst with optical afterglow
  
• 7935 GRB 080703A: ROTSE-III Detection of Optical Counterpart
  
• 7934 No radio detection from the short GRB 080702A
  
• 7933 GRB 080702b: LCO optical observations
  
• 7932 Swift/UVOT observation of GRB080702A
  
• 7931 GRB 080702B: Swift XRT and UVOT observations
  
• 7930 GRB 080625: Suzaku WAM observation of the prompt emission
  
• 7929 GRB 080702A: MITSuME Akeno optical upper limits
  
• 7928 GRB 080701A: Early RAPTOR optical limits
  
• 7927 Swift Trigger 315630: Swift/UVOT Upper Limits
  
• 7926 GRB 080702A, Swift-BAT refined analysis
  
• 7925 GRB 080702A: Swift-XRT Team refined analysis
  
• 7924 GRB 080702B : Burst detected in BAT during Swift slew
  
• 7923 GRB 080702A: Enhanced Swift-XRT position
  
• 7922 Swift Trigger 315630: TLS R-band observation
  
• 7921 Swift Trigger 315630: Probably not a GRB
  
• 7920 GRB 080702: Swift detection of a short burst
  
• 7919 GRB 080701: Swift-XRT refined analysis
  
• 7918 GRB 080701A, VATT optical upper limit
  
• 7917 TLS I-Band Observation of GRB 080701A
  
• 7916 GRB 080701A: Swift/UVOT Upper Limits
  
• 7915 GRB 080701A: Early Super-LOTIS Observations
  
• 7914 GRB 080701: Enhanced Swift-XRT position
  
• 7913 GRB 080701A, Swift-BAT refined analysis
  
• 7912 Trigger 315630: Swift detection of a possible burst
  
• 7911 GRB 080701: Swift-XRT Prompt Analysis
  
• 7910 GRB 080701: Swift detection of a burst
  
• 7909 GRB 080623: Suzaku WAM observation of the prompt emission
  
• 7908 GRB 080625: Swift/UVOT Follow-Up Observations
  
• 7907 GRB 080625: Further observations from OSN
  
• 7906 GRB 080625:Swift-XRT detection of the afterglow
  
• 7905 GRB 080625: Swift/UVOT Detection of an Optical Afterglow
  
• 7904 GRB 080625: Observations at OSN
  
• 7903 GRB 080625: Gamma Ray Burst Localization by SuperAGILE
  
• 7902 GRB 080623: GROND upper limits
  
• 7901 GRB 080623: Swift UVOT followup observations
  
• 7900 GRB 080623: Swift-XRT refined analysis
  
• 7899 GRB 080623, Swift-BAT refined analysis
  
• 7898 GRB 080623: Enhanced Swift-XRT position
  
• 7897 GRB 080623: TAROT La Silla observatory optical observations
  
• 7896 GRB 080623: Swift/UVOT Non-Detection of an Optical Afterglow
  
• 7895 GRB 080623: Swift XRT prompt analysis
  
• 7894 GRB 080623: Swift detection of a burst
  
• 7893 Swift trigger 314975 is not a GRB
  
• 7892 Swift-BAT trigger 314975 possible burst
  
• 7891 GRB 080607: optical observation
  
• 7890 GRB 080603b: optical observation
  
• 7889 GRB 070809: Putative host galaxy and redshift
  
• 7888 VLA upper limit on INTEGRAL burst GRB 080613A
  
• 7887 GRB 0800603A: optical observation
  
• 7886 GRB 080613B: MITSuME upper limits
  
• 7885 GRB 080613A: Optical upper limits with Okayama MITSuME telescope
  
• 7884 Konus-Wind observation of GRB 080613B
  
• 7883 GRB 080603A: optical observations on June 04
  
• 7882 GRB 080613A: Swift-XRT detection of the afterglow
  
• 7881 GRB 080613A: Swift/UVOT Upper Limits
  
• 7880 GRB 080613A: GROND Confirmation of the Afterglow Candidate
  
• 7879 GRB 080613B: GROND Upper Limits
  
• 7878 GRB 080613B - NOT optical and IR nondetections
  
• 7877 GRB 080613B: Swift/UVOT Upper Limits
  
• 7876 GRB 080613B, Swift-BAT refined analysis
  
• 7875 GRB 080613B: Swift-XRT refined analysis
  
• 7874 GRB 080514B: Spectroscopic constraints and probable host galaxy
  
• 7873 GRB 080613B: Swift detection of a burst
  
• 7872 GRB 080613: Faulkes Telescope North optical candidate
  
• 7871 GRB 080613 : a long GRB detected with INTEGRAL
  
• 7870 GRB 080603A: Late-time Keck imaging and spectroscopy
  
• 7869 GRB 080603b: optical observation
  
• 7868 Swift observations of BAT Slew Survey event (Trigger=010)
  
• 7867 GRB 080603A: final Swift-XRT observations.
  
• 7866 GRB 080607: AGILE-MCAL observation of the prompt emission
  
• 7865 GRB 080603B - TLS 2nd Epoch: Another Break
  
• 7864 GRB 080605: TLS 3rd Epoch - Source Confusion
  
• 7863 GRB 080605: optical observation with the MITSuME-OAO telescope
  
• 7862 Konus-Wind observation of GRB 080607
  
• 7861 GRB 080607: RTT150 optical observations
  
• 7860 GRB 080603A: optical observations
  
• 7859 GRB 080607: Swift-XRT refined analysis
  
• 7858 Swift/UVOT Observations of GRB080607
  
• 7857 GRB 080605: optical observations
  
• 7856 GRB 080607 KAIT observations
  
• 7855 VLA detection of INTEGRAL burst GRB 080603A
  
• 7854 Konus-Wind observation of GRB 080605
  
• 7853 GRB 080607: Enhanced Swift-XRT position
  
• 7852 GRB 080607, Swift-BAT refined analysis
  
• 7851 GRB 080605: GROND 2nd epoch observations
  
• 7850 GRB 080607 - PAIRITEL NIR detection
  
• 7849 GRB 080607: Keck/LRIS spectroscopy and redshift
  
• 7848 GRB 080607: Super-LOTIS early observations
  
• 7847 GRB 080607: Swift detection of a burst with optical afterglow
  
• 7846 GRB 080607: ROTSE-III Detection of Optical Counterpart
  
• 7845 GRB 080605: TLS RRM Analysis, Plateau/Rebrightening, Red OT
  
• 7844 GRB 080605: Swift-UVOT refined analysis
  
• 7843 Possible VLA radio detection on INTEGRAL burst GRB 080603A
  
• 7842 GRB 080604: VLA radio upper limit
  
• 7841 Removed from archive -- duplicate submission.
  
• 7840 GRB 080603B: VLA radio upper limit
  
• 7839 GRB 080605, Swift-BAT refined analysis
  
• 7838 GRB 080605: Swift-XRT refined analysis
  
• 7837 GRB 080605: observation by BOOTES
  
• 7836 GRB 080605: MASTER VWF 46 s AT observation
  
• 7835 GRB 080605: Enhanced Swift-XRT position
  
• 7834 GRB 080605: GROND detection of the optical afterglow candidate
  
• 7833 GRB 080605: optical observations
  
• 7832 GRB 080605: VLT redshift
  
• 7831 GRB 080605: Liverpool Telescope optical afterglow candidate
  
• 7830 GRB 080605: Swift/UVOT Position of the Optical Afterglow
  
• 7829 GRB 080605: TLS RRM Afterglow
  
• 7828 GRB 080605: Swift detection of a burst with an optical afterglow
  
• 7827 GRB 080603B: PAIRITEL infrared detection
  
• 7826 GRB 080603A: PAIRITEL infrared detection
  
• 7825 GRB 080604: Xinglong R band observation
  
• 7824 GRB 080603A: Xinglong R band observation
  
• 7823 GRB 080603B: TLS Afterglow Observation
  
• 7822 GRB 080603A: TLS Afterglow Observation
  
• 7821 GRB 080604: MITSuME Okayama observation
  
• 7820 Swift/UVOT observations of GRB080604
  
• 7819 GRB 080604: HET redshift retraction
  
• 7818 GRB 080604: Gemini-North spectroscopy
  
• 7817 GRB 080604, Swift-BAT refined analysis
  
• 7816 GRB 080604: Swift-XRT refined analysis
  
• 7815 GRB 080603B: Hobby-Eberly Telescope redshift confirmation
  
• 7814 GRB 080603B : Xinglong EST observations
  
• 7813 GRB 080603B : Liverpool Telescope Observations
  
• 7812 Konus-Wind observation of GRB 080603B
  
• 7811 GRB 080603B: Swift-XRT refined analysis
  
• 7810 GRB 080603A: Swift-XRT detection of the afterglow
  
• 7809 GRB 080430: optical observations
  
• 7808 GRB 080603B: Swift/UVOT detection of the afterglow
  
• 7807 GRB 080604: Enhanced Swift-XRT position
  
• 7806 GRB 080603B, Swift-BAT refined analysis
  
• 7805 GRB 080604: Hobby-Eberly Telescope spectroscopy
  
• 7804 GRB 080603A: Swift/UVOT detection of the afterglow
  
• 7803 GRB 080603B: RTT150 optical observations, break in light curves
  
• 7802 GRB 080604: Early Super-LOTIS Observations
  
• 7801 GRB 080604: confirmation of optical afterglow
  
• 7800 GRB 080604: Swift detection of a burst with an optical afterglow
  

After a while the above table gets too large and then the older entries are moved to the following tables.

Circulars 7700-7799   08-05-08 to 08-06-04
Circulars 7600-7699   08-04-13 to 08-05-08
Circulars 7500-7599   08-03-21 to 08-04-13
Circulars 7400-7499   08-03-10 to 08-03-21
Circulars 7300-7399   08-02-13 to 08-03-10
Circulars 7200-7299   08-01-21 to 08-02-13
Circulars 7100-7199   07-11-17 to 08-01-21
Circulars 7000-7099   07-10-25 to 07-11-17
Circulars 6900-6999   07-10-12 to 07-10-25
Circulars 6800-6899   07-09-19 to 07-10-12
Circulars 6700-6799   07-08-02 to 07-09-18
Circulars 6600-6699   07-07-05 to 07-08-02
Circulars 6500-6599   07-06-11 to 07-07-05
Circulars 6400-6499   07-05-09 to 07-06-11
Circulars 6300-6399   07-04-18 to 07-05-09
Circulars 6200-6299   07-03-12 to 07-04-18
Circulars 6100-6199   07-02-12 to 07-03-12
Circulars 6000-6099   07-01-07 to 07-02-12
Circulars 5900-5999   06-12-05 to 07-01-07
Circulars 5800-5899   06-11-10 to 06-12-05
Circulars 5700-5799   06-10-06 to 06-11-10
Circulars 5600-5699   06-09-23 to 06-10-06
Circulars 5500-5599   06-09-03 to 06-09-23
Circulars 5400-5499   06-08-05 to 06-09-03
Circulars 5300-5399   06-07-11 to 06-08-05
Circulars 5200-5299   06-06-10 to 06-07-11
Circulars 5100-5199   06-05-10 to 06-06-03
Circulars 5000-5099   06-04-24 to 06-05-10
Circulars 4900-4999   06-03-21 to 06-04-24
Circulars 4800-4899   06-02-20 to 06-03-21
Circulars 4700-4799   06-02-06 to 06-02-20
Circulars 4600-4699   06-01-25 to 06-02-06
Circulars 4500-4599   06-01-13 to 06-01-25
Circulars 4400-4499   05-12-27 to 06-01-13
Circulars 4300-4399   05-11-22 to 05-12-27
Circulars 4200-4299   05-11-06 to 05-11-22
Circulars 4100-4199   05-10-16 to 05-11-06
Circulars 4000-4099   05-09-19 to 05-10-16
Circulars 3900-3999   05-08-28 to 05-09-18
Circulars 3800-3899   05-08-14 to 05-08-28
Circulars 3700-3799   05-07-29 to 05-08-14
Circulars 3600-3699   05-07-13 to 05-07-29
Circulars 3500-3599   05-05-28 to 05-07-13
Circulars 3400-3499   05-05-10 to 05-05-28
Circulars 3300-3399   05-04-21 to 05-05-10
Circulars 3200-3299   05-04-09 to 05-04-21
Circulars 3100-3199   05-03-16 to 05-04-09
Circulars 3000-3099   05-01-30 to 05-03-16
Circulars 2900-2999   04-12-23 to 05-01-28
Circulars 2800-2899   04-10-13 to 04-12-23
Circulars 2700-2799   04-09-09 to 04-10-13
Circulars 2600-2699   04-05-14 to 04-09-09
Circulars 2500-2599   03-12-22 to 04-05-14
Circulars 2400-2499   03-09-25 to 03-12-21
Circulars 2300-2399   03-07-15 to 03-09-24
Circulars 2200-2299   03-05-03 to 03-07-15
Circulars 2100-2199   03-04-05 to 03-05-03
Circulars 2000-2099   03-03-27 to 03-04-05
Circulars 1900-1999   03-02-27 to 03-03-29
Circulars 1800-1899   03-01-11 to 03-02-27
Circulars 1700-1799   02-11-20 to 03-01-11
Circulars 1600-1699   02-10-07 to 02-11-19
Circulars 1500-1599   02-08-16 to 02-10-07
Circulars 1400-1499   02-05-31 to 02-08-16
Circulars 1300-1399   02-03-22 to 02-05-31
Circulars 1200-1299   01-12-13 to 02-03-12
Circulars 1100-1199   01-09-22 to 01-12-13
Circulars 1000-1099   01-03-02 to 01-09-22
Circulars 900-999   00-12-14 to 01-03-01
Circulars 800-899   00-09-27 to 00-12-14
Circulars 700-799   00-06-13 to 00-09-27
Circulars 600-699   00-03-08 to 00-06-13
Circulars 500-599   99-12-16 to 00-03-08
Circulars 400-499   99-08-10 to 99-12-16
Circulars 300-399   99-05-08 to 99-08-10
Circulars 199-299   99-01-23 to 99-05-07
Circulars 100-198   98-06-13 to 99-01-22
Circulars neg4-099   97-02-?? to 98-06-13