GCN KONUS Light Curves

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  1. Recent GCN/Konus Lightcurves
  2. Past GCN/Konus Lightcurves

This table contains information about GRBs (and non-GRBs) detected by KONUS-Wind.
The most recent Notice is listed first (reverse time order).

The 2 left-most columns are:
      the Date (yyyymmdd) and the Time (hh:mm:ss.sss)
      of the start of the Transient event (ie the on-board Trigger Time).

The next 3 columns (Det Event Trig#) are:
      the DectorNumber (Det: 1 or 2),
      the type of trigger (Event) [provided by the KONUS Team some days to weeks later], and
      the trigger number (Trig#).
These are not produced automatically, but rather are supplied by human analysis (Sergei Golenetskii (Ioffe Institute) at ~T+1-3 weeks).

The next 4 columns are the graphical represenations of the lightcurve (in 4 different formats):
Postscript, GIF, JPEG, and 2 text formats.
The first text file (Text) format has 2 header lines (line1= GRB date, line2= hh:mm:sec.sss) and then 1552 lines of Time,Cnt_rate pairs.
The second text file (Text2) format has 4 header lines (line1= KONUS1or2 detector number, date ,time, and a comment, line2= keV range, line3= average background value, line4= comment) and then the same 1552 lines of Time,Cnt_rate pairs.
For both files, the time sampling is 64 msec, and runs from T-0.512 sec to T+98.752 sec.
The bandpass is 50-200 keV.
The KONUS_1 detector views the southern ecliptic hemisphere, and KONUS_2 views the northern ecliptic hemisphere.

The telemetry data from KONUS is available 1-25 hours after the trigger time. Automated software within the GCN system captures these daily dumps, scans for triggers, extracts the rate information, and produces the light curves.

There is no immediate identification of the trigger type for the most recent events. Most light curves are for actual GRBs, but like BATSE there are other non-astrophysical mechanisms which can cause count-rate increases in the detector and initiate a trigger. Within two weeks, the Detector number, Event type, and Trigger number are supplied by Sergei Golenetskii (Ioffe Institute) and are added to the table.

Please note that because of spacecraft telemetry downlink operations, about 1 in 10 triggers are downloaded twice. Hense, since the automated scripts are not smart enough to recognize this duplication, there will be a few duplicated entries in the table below. On rare occasions a human administrator will remove these duplicate entries.

NOTE: All files on this site have been checked due to a report of a high count rate anomaly at 33.280 seconds in some files. Many files have been corrected. You should check any files downloaded before February 28, 2002 for this anomaly. The Light Curves that were generated by the GCN/KONUS Notices were NOT affected.

NEWS: December 2014: A WIND spacecraft anomaly occurred on Oct 27, 2014 at 21:59:38 GMT. The WIND Flight Operations Team has restored the automated processing as of Nov 26, 2014. Not all data between these dates could be recovered. Some files within this time period may be incorrect due to the spacecraft configuration changes made during this time.

For more information on the GCN/KONUS.
For more information on Wind-KONUS (HEASARC) or KONUS (GSFC)


TRIGGER TYPE SUMMARY:
The annual occurance rates for the KONUS triggers broken down by type is:
                                                                        
YEAR     GRB   SGR   FLARE    PART   KNOWN  UNKNOWN     COMMENTS                                                                       
2015     131     0     40       0      0      0         2 Unclassified                                         
2014     103     0     74       0      0      0         2 Unclassified, 1 'Imit'                                         
2013     130     0     56       2      0      0                                                                       
2012     110     0     43       1      0      0                                                                       
2011     133     0     45       2      0      0                                                                       
2010     125     0      7       0      0      0                                                                       
2009     124     0      0       0     23      0         All 23 'Knowns' are  AXP triggers.                                                                       
2008     118     7      0       0      0      0                                                                       
2007     114     8      4       0      0      0                                                                       
2006     140    19     11       0      0      0                                                                       
2005     113    13     36       0      0      0                                                                       
2004     136    68     75       5      0      0                                                                        
2003     127     7     89       7      0      1                                                                        
2002     107    20     90      14      0      8                                                                        
2001     104     4    119      10      0      0                                                                        
2000     151     1    122      31      0      4                                                                        
1999     128     5     95      43      0      4                                                                        
1998     127    58     70      12      0      0                                                                        
1997     111     3     14      18      0      6          Plus 6 GndCmd triggers                                                                        
1996     125     7      2      76      0      1          Plus 9 GndCmd triggers                                                                        
1995     126     0     15      15      0      0          Plus 15 GndCmd triggers                                                                        

Recent GCN/KONUS Light Curves:

(Listed by date and time)

Trig_DateTrig_TimeDetEventTrig# Postscript GIF JPEG Text Text2
20200207 01:22:55.718 UT Postscript GIF JPEG Text Text
20200201 14:16:13.353 UT Postscript GIF JPEG Text Text
20200131 22:41:13.507 UT 2 GRB 4848 Postscript GIF JPEG Text Text
20200130 09:59:59.282 UT 1 GRB 4847 Postscript GIF JPEG Text Text
20200125 20:43:31.206 UT 2 GRB 4846 Postscript GIF JPEG Text Text
20200122 01:41:06.859 UT 2 GRB 4845 Postscript GIF JPEG Text Text
20200120 23:04:56.553 UT 1 GRB 4844 Postscript GIF JPEG Text Text
20200119 20:49:13.503 UT 2 GRB 4843 Postscript GIF JPEG Text Text
20200115 21:22:48.819 UT 2 GRB 4842 Postscript GIF JPEG Text Text
20200114 03:40:48.578 UT 2 GRB 4841 Postscript GIF JPEG Text Text
20200112 12:36:34.462 UT 2 GRB 4840 Postscript GIF JPEG Text Text
20200111 15:11:17.988 UT 2 GRB 4839 Postscript GIF JPEG Text Text
20200101 20:39:27.095 UT 1 GRB 4838 Postscript GIF JPEG Text Text


Past GCN/Konus Lightcurves:
Triggers 2019
Triggers 2018
Triggers 2017
Triggers 2016
Triggers 2015
Triggers 2014
Triggers 2013
Triggers 2012
Triggers 2011
Triggers 2010
Triggers 2009
Triggers 2008
Triggers 2007
Triggers 2006
Triggers 2005
Triggers 2004
Triggers 2003
Triggers 2002
Triggers 2001
Triggers 2000
Triggers 1999
Triggers 1998
Triggers 1997
Triggers 1996
Triggers 1995
Triggers 1994


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This file was last modified by a human on 04-Feb-20.