[vsnet-grb 150763] Fermi-GBM_FINAL notice type added to GCN

Tue Jun 7 20:24:51 JST 2011

TO:  All GCN Notice recipients
RE:  Fermi-GBM-Final Notice added
DT:  7 Jun 11

INTRODUCTION
The GCN system has been modified to incorporate the distribution
of a new notice type added to the set of Fermi-GBM notices.
This new notice type has improved position values for the GBM GRBs
because it involves humans-in-the-loop ground analysis.
Like all the notice types within the GCN system,
users can elect to receive the Fermi-GBM-Final Notice type.

ACTION ITEM:
If, after reviewing the information below, you want to receive
this Fermi-GBM-Final Position notice type, please send me a request to have them enabled.
You can do this by forwarding this email with your request to  scott at milkyway.gsfc.nasa.gov
(since it already has your "site name").
Or you can go to  http://gcn.gsfc.nasa.gov/gcn/config_builder.html
and select "#2 Modify existing Config".
You can also take this opportunity to make other changes to your config.

CONTENT and PURPOSE:
This new type has the advantage of better location accuracy
because of human-in-the-loop data analysis.  And the disadvantage
is that this type has a longer delay (because the analysis
is not automated like the Flight_Position and Ground_Position types).

OCCURANCE RATE:
The Final Notice will be issued within a latency of ~2 hours
for the brightest 10-20% of the bursts that do not have a more precise location
by another instrument.  Final notices for less-well-located bursts (up to ~10   
degrees) may also be issued, possibly with a longer latency.  So that means
about 60 per year for the brightest bursts and about 100 per year for weaker bursts.

ERRORS and TIME_DELAYS (for all the GBM types):
This table (below) shows the delay_timescales and localization accuracies
of all the GBM notice types (with the new Final type in the last row):

                 TIME SINCE    LOCATION
TYPE             BURST         ACCURACY       COMMENTS
                               (radius)
=========        ============  ==========     ========
GBM_Alert        ~5sec         n/a            First GBM Notice, Timestamp Alert
GBM_Flt_Pos      ~10sec        15deg(1 sigma) First (of a series) Position Notice, Flight-calculated
GBM_Gnd_Pos      20-300sec     1-10deg+3sys   Position Notice, Automated-Ground-calculated
GBM_Final_Pos    0.3-2 hr      1-3deg+3sys    Position Notice, Human-in-the-Loop-Ground-calculated

ARCHIVE STORAGE:
All the GCN/FERMI Notices are archived within the GCN website in the Table of FERMI GRBs:
http://gcn.gsfc.nasa.gov/gcn/fermi_grbs.html

MORE INFORMATION:
Can be found at: http://gcn.gsfc.nasa.gov/gcn/fermi.html

NOTICE EXAMPLE:
Here is an example of a full-format email GBM Final_Position Notice:
    TITLE:           GCN/FERMI NOTICE
    NOTICE_DATE:     Mon 06 Jun 11 14:48:44 UT
    NOTICE_TYPE:     Fermi-GBM Final Position
    RECORD_NUM:      0
    TRIGGER_NUM:     328940614
    GRB_RA:           14.950d {+00h 59m 48s} (J2000),
                      15.118d {+01h 00m 28s} (current),
                      14.219d {+00h 56m 52s} (1950)
    GRB_DEC:         +52.460d {+52d 27' 36"} (J2000),
                     +52.521d {+52d 31' 17"} (current),
                     +52.191d {+52d 11' 26"} (1950)
    GRB_ERROR:       1.00 [deg radius, statistical only]
    GRB_DATE:        15717 TJD;   156 DOY;   11/06/05
    GRB_TIME:        15812.30 SOD {04:23:32.30} UT
    GRB_PHI:          48.00 [deg]
    GRB_THETA:       109.09 [deg]
    E_RANGE:         50.000 - 300.000 [keV]
    LOC_ALGORITHM:   413 (Gnd S/W Version number)
    SUN_POSTN:        74.33d {+04h 57m 19s}  +22.66d {+22d 39' 19"}
    SUN_DIST:         53.62 [deg]   Sun_angle= 3.9 [hr] (West of Sun)
    MOON_POSTN:      134.77d {+08h 59m 04s}  +12.87d {+12d 52' 18"}
    MOON_DIST:        96.70 [deg]
    MOON_ILLUM:      24 [%]
    GAL_COORDS:      124.23,-10.39 [deg] galactic lon,lat of the burst (or transient)
    ECL_COORDS:       37.98, 41.68 [deg] ecliptic lon,lat of the burst (or transient)
    COMMENTS:        Fermi-GBM Final Position.
    COMMENTS:        This Notice was ground-generated -- not flight-generated.

The socket packets contents can be found at:
http://gcn.gsfc.nasa.gov/gcn/sock_pkt_def_doc.html

Sincerely,
Scott

Scott Barthelmy                      NASA-GSFC, Code 661, Greenbelt, MD   20771
PHONE:  301-286-3106                 (office)       CELL:   301-346-3733
FAX:    301-286-1684                 (1st choice,  -1682 2nd choice)
EMAIL:  scott at lheamail.gsfc.nasa.gov
PAGER:  3013463733 at cingularme.com
WEB:    http://gcn.gsfc.nasa.gov/gcn

///////////////////////////// Your Current Configuration ////////////////////////////

BEGIN_SITE
SITE_NAME  VSNET
DATES   25jun05   23oct07
SITE_LON_LAT   135.75   35.00
DIST_METHOD   EMAIL
DIST_ADDRESS  vsnet-grb at ooruri.kusastro.kyoto-u.ac.jp
POC_NAME      your_name_here
POC_ADDRESS   your at address.goes.here
DAILY_REPORT_ENABLE   0
DAILY_REPORT_ADDRESS  your at address.goes.here
# Site-specific items:
TRIGGER_ID     0
INTENSITY      -1.0
ERROR          360.1000
DELAY          999.9
SIGNIFICANCE   0.00
CONF_LEVEL     0.00
OBSERVABILITY  ALL
ATTACHMENT     NONE
SIMBAD_NED     0
# Type-specific items:
IPN_SEG
IPN_POS
INTEGRAL_SPIACS
INTEGRAL_WAKEUP
INTEGRAL_REFINED
INTEGRAL_OFFLINE
KONUS_LC
SWIFT_BAT_GRB_ALERT
SWIFT_BAT_GRB_POS  trig_id=0
SWIFT_BAT_GRB_NACK_POS
SWIFT_BAT_GRB_LC  trig_id=0
SWIFT_FOM_2OBS  trig_id=0
SWIFT_SC_2SLEW  trig_id=0
SWIFT_XRT_POS
SWIFT_XRT_NACK_POS
SWIFT_XRT_IMAGE
SWIFT_XRT_PROC_IMAGE
SWIFT_UVOT_POS  inten=99.00
SWIFT_UVOT_IMAGE
SWIFT_UVOT_PROC_IMAGE
SWIFT_UVOT_SRCLIST
SWIFT_UVOT_PROC_SRCLIST
SWIFT_POINTDIR
SWIFT_TOO_FOM
SWIFT_TOO_SLEW
END_SITE