[vsnet-grb-info 16667] V404 Cyg: Fermi GBM observations

GCN Circulars gcncirc at capella2.gsfc.nasa.gov
Sat Jun 20 07:19:27 JST 2015


TITLE:   GCN CIRCULAR
NUMBER:  17948
SUBJECT: V404 Cyg: Fermi GBM observations
DATE:    15/06/19 22:19:19 GMT
FROM:    Eric Burns at U of Alabama  <eb0016 at uah.edu>

E. Burns (UAH), P. Jenke (UAH), B. Mailyan (UAH),
G. Younes (GWU), and A. von Kienlin (MPE)
report on behalf of the Fermi GBM Team:

"The Fermi Gamma-Ray Burst Monitor has triggered multiple times
on the current outburst of V404 Cyg. These triggers have all
been misclassified as GRBs by the flight software.
A list of V404 Cyg triggers up to now is listed below.


It is likely that there will be more triggers from this source
as long as it remains active and we will not issue circulars
for these triggers.   We will populate our online trigger
catalog with the correct classification as soon as possible.  The
online trigger catalog is updated automatically by the HEASARC once
per day. A list of V404 Cyg triggers can be found by searching for
the 'TRANSNT' trigger type and confirming the location.
The catalog can be browsed at:

http://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigtrig.html


Triggers that our duty scientist classifies
as GRBs are followed by GCN notices with a final
human-in-loop localization with a latency of 30 minutes to a few
hours after the trigger. Triggers that are not classified by a human
as GRBs are not followed by final position GCN notices.


Triggers from V404 Cyg to date:

150619774/456431653
150619580/456414880
150619570/456414027
150619561/456413265
150619554/456412636
150619427/456401723
150619420/456401105
150619352/456395199
150619342/456394328
150619317/456392148
150619309/456391510
150619301/456390804
150619242/456385736
150619224/456384186
150619173/456379743
150619165/456379080
150618834/456350498
150618763/456344362
150618710/456339724
150616921/456185211
150616855/456179459
150616734/456169002
150615798/456088185
150615791/456087544"



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