[AAVSO-HEN] Swift_BAT_Lightcurve Notice for Trigger Number 344565 is not valid

grb at aavso.org grb at aavso.org
Sat Feb 28 23:57:45 EST 2009


The following is a GCN Circular circulated via the AAVSO network.
For an archive and more information on circulars visit:
http://lheawww.gsfc.nasa.gov/docs/gamcosray/legr/bacodine/gcn3_archive.html

TITLE:   GCN CIRCULAR
NUMBER:  8919
SUBJECT: Swift_BAT_Lightcurve Notice for Trigger Number 344565 is not valid
DATE:    09/03/01 04:57:18 GMT
FROM:    Scott Barthelmy at NASA/GSFC  <scott at lheamail.gsfc.nasa.gov>

Scott Barthelmy (GSFC) for the Swift Team:

At about 02:38 UT a lone Swift-BAT Lightcurve notice
was distributed with a trigger number 344565.
This notice is not correct.  It is not due to a real GRB,
nor to anything astrophysical.  It was the result
of a combination of a BAT Subthreshold trigger [1] and
a particular high error-rate stretch of TDRSS telemetry [2].

We apologize for any inconvenience.

[1] The BAT Subthreshold operational mode is being tested.
Currently, this notice type is not being publically distributed.

[2] The CRC error rate was 20 times the normal rate.



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