[vsnet-grb 156608] Fermi-LAT_Monitor and _Transient types are available

Bacodine vxw at capella2.gsfc.nasa.gov
Fri Aug 26 22:45:37 JST 2011


TO:  All GCN Notice recipients
RE:  Fermi-LAT_Monitor and _Transient types are available
DT:  26 Aug 2011


INTRODUCTION:
The GCN system has been modified to incorporate the distribution
of the Fermi-LAT "monitor" and "transient" notices.
The Monitor notice reports flares from known sources that Fermi
regularly monitors as part of its all-sky survey (168 sources, eg Blazars, AGN, etc).
The Transient notice reports positions of non-GRB transient events
detected by Fermi-LAT that are not associated with any previously known source.

OCCURRANCE RATE:
There will be about 25 Monitor flares per year.
For Transient events, the occurance rate is less certain;
it will be fewer than 10 per year.

TIME DELAY:
Both of these operations are automated ground-based analysis efforts
and use search timescales of 1-day and 1-week timescales.
As such, there is an intrinsic comparable delay (from the start of the transient)
in reporting these events.

LOCATION ERROR:
The location uncertainties are in the 10-60 arcmin range (radius, 95% containment).

ACTION ITEM:
If, after reviewing the information below, you want to receive
these Fermi-LAT_MONITOR or Fermi-LAT_TRANSIENT notices,
please send me a request to have them enabled.  You can do this
by forwarding this email (which has your sitename identifier)
to scott at milkyway.gsfc.nasa.gov .
Or you can go to  http://gcn.gsfc.nasa.gov/gcn/config_builder.html
and select "#2 Modify an existing config".
You can also take this opportunity to make other changes to your configuration.

ARCHIVE STORAGE:
The GCN/FERMI Notices are archived within the GCN website
in the Table of FERMI Transients & Flares:
    http://gcn.gsfc.nasa.gov/gcn/fermi_lat_mon_trans.html
This single archive page contains both types.

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 FERMI_LAT_MONITOR Notice:

    TITLE:           GCN/FERMI NOTICE
    NOTICE_DATE:     Thu 28 Apr 11 22:03:17 UT
    NOTICE_TYPE:     Fermi-LAT Monitor
    SOURCE_OBJ:      LSI+61303_86400
    REF_NUM:         1304028194
    RA:               40.131d {+02h 40m 31s} (J2000),
                      40.335d {+02h 41m 20s} (current),
                      39.168d {+02h 36m 40s} (1950)
    DEC:             +61.229d {+61d 13' 44"} (J2000),
                     +61.274d {+61d 16' 25"} (current),
                     +61.015d {+61d 00' 52"} (1950)
    CURR_FLUX:       1.60e-06 +- 5.20e-08 [ph/cm2/sec]
    BASE_FLUX:       1.30e-06 +- 4.80e-08 [ph/cm2/sec]
    SIGNIFICANCE:    0.50 [sigma]
    TIME_SCALE:      1  {0=1day, 1=1week}
    ENERGY_BAND:     0.1 - 300.0 [GeV]
    OUTBURST_DATE:   15397 TJD;   -164 DOY;   11/01/-164
    OUTBURST_TIME:   43620.00 SOD {12:07:00.00} UT
    SOLN_STATUS:     0x0
    LC_URL:          http://fermi.gsfc.nasa.gov/FTP/glast/data/lat/catalogs/asp/current/lightcurves/LSI+61303_86400.png
    SUN_POSTN:        35.89d {+02h 23m 35s}  +14.26d {+14d 15' 39"}
    SUN_DIST:         47.12 [deg]   Sun_angle= -0.3 [hr] (East of Sun)
    MOON_POSTN:      349.03d {+23h 16m 08s}   +0.83d {+00d 49' 35"}
    MOON_DIST:        71.75 [deg]
    MOON_ILLUM:      17 [%]
    GAL_COORDS:      135.68,  1.09 [deg] galactic lon,lat of the burst (or transient)
    ECL_COORDS:       59.84, 42.91 [deg] ecliptic lon,lat of the burst (or transient)
    COMMENTS:        Fermi-LAT Monitor flare alert.
    COMMENTS:        This Notice was ground-generated -- not flight-generated.
    COMMENTS:        Some comments here.
    COMMENTS:        A 2nd line of comments.
    COMMENTS:        Each line must be prefexed with "COMMENTS:".


Here is an example of a full-format email FERMI_LAT_TRANSIENT Notice:

    TITLE:           GCN/FERMI NOTICE
    NOTICE_DATE:     Thu 28 Apr 11 21:46:32 UT
    NOTICE_TYPE:     Fermi-LAT Transient Position
    TRANS_OBJ:       ASPJ175843m241914
    REF_NUM:         1304027191
    TRANS_RA:        270.190d {+18h 00m 46s} (J2000),
                     270.363d {+18h 01m 27s} (current),
                     269.426d {+17h 57m 42s} (1950)
    TRANS_DEC:       -23.916d {-23d 54' 57"} (J2000),
                     -23.916d {-23d 54' 56"} (current),   
                     -23.915d {-23d 54' 54"} (1950)
    TRANS_ERROR:     17.99 [arcmin radius, 100% containment]
    CURR_FLUX:       2.40e-06 +- 6.99e-07 [ph/cm2/sec]
    BASE_FLUX:       8.00e-07 +- 4.00e-07 [ph/cm2/sec]
    SIGNIFICANCE:    4.00 [sigma]
    TIME_SCALE:      1  {0=1day, 1=1week}
    ENERGY_BAND:     0.1 - 300.0 [GeV]
    TRANS_DATE:      15670 TJD;   109 DOY;   11/04/19
    TRANS_TIME:      43440.00 SOD {12:04:00.00} UT
    SOLN_STATUS:     0x1
    SUN_POSTN:        35.88d {+02h 23m 32s}  +14.26d {+14d 15' 26"}
    SUN_DIST:        127.92 [deg]   Sun_angle= 8.4 [hr] (West of Sun) 
    MOON_POSTN:      348.91d {+23h 15m 38s}   +0.77d {+00d 46' 18"}
    MOON_DIST:        79.86 [deg]
    MOON_ILLUM:      17 [%]
    GAL_COORDS:        6.05, -0.37 [deg] galactic lon,lat of the burst (or transient)
    ECL_COORDS:      270.17, -0.48 [deg] ecliptic lon,lat of the burst (or transient)
    COMMENTS:        Fermi-LAT Transient Coordinates.
    COMMENTS:        This is a previously unknown source.
    COMMENTS:        This Notice was ground-generated -- not flight-generated.
    COMMENTS:        Possibly 1FGL J1800.5-2359c  Contact: David.J.Thompson at nasa.gov



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


REMINDER OF RECENT ADDITIONS TO GCN:
In case you have missed them, here is a brief list of the most recent
additions to the GCN system.  You might consider signing up
for these Notice types as well.  The full anouncements/dscriptions
for each of these can be found at:  http://gcn.gsfc.nasa.gov/gcn/whats_new.html
FERMI_LAT_GND (02 Aug 2011)       // Automated ground processing to get GRB positions
MOA  (01 Aug 2011)                // Locatiosn of up-coming gravitation lensing events
DOW_TOD  (13 Jun 2011)            // Preprogrammed notices at specific days-of-week & time-of-day
FERMI_GBM FIN_POS  (07 Jun 2011)  // Human-in-the-loop ground-based analysis
MAXI_UNKNOWN/_KNOWN (Apr 2011)    // Unknown transients & Flares-ups from Known sources
INTEGRAL_WEAK  (Feb 2011)         // Subthreshold detections by INTEGRAL
SWIFT_BAT_MONITOR (Feb 2010)      // Flares-ups from known sources monitored by Swift-BAT



Sincerely,
Scott

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


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DIST_ADDRESS  vsnet-grb at ooruri.kusastro.kyoto-u.ac.jp
POC_NAME      Daisaku Nogami
POC_ADDRESS   vsnet-grb at ooruri.kusastro.kyoto-u.ac.jp
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