[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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