[vsnet-grb 146732] MAXI Notice types added to GCN
Bacodine
vxw at capella2.gsfc.nasa.gov
Wed Apr 13 05:12:33 JST 2011
TO: All GCN Notice recipients
RE: MAXI Notice types are available
DT: 12 Apr 11
INTRODUCTION:
The GCN system has been modified to incorporate the distribution
of the MAXI "Unknown source" and "Known source" detections.
The Unknown_source notices occur about 12 times per year.
The Known_source notices occur about 52 times per year.
The time delays are in the 2 to 3 hours range.
The location uncertainties are 30-60 arcmin (radius, stat+sys, 90% containment).
ACTION ITEM:
If, after reviewing the information below, you want to receive
either of these MAXI position notices, please send me a request
to have them enabled. You can do this by forwarding this email to
scott at milkyway.gsfc.nasa.gov .
NOTICE TYPES:
Foreach MAXI detection, ground catalogs are checked to see
if the source is a previously known source or not. If not,
then it gets the "Unknown source" designation (GCN Type = 134),
although, occaisionally (~2-in-12) will have a possible
known-source identification attributed to the detection).
These Unknown sources include (a) GRBs and (b) other previously
unknown x-ray transients. If it is a previously known source
(ie in a catalog), then is gets the "Known source" designation
(GCN Type = 135). There are 4 subcategories of Known sources:
(a) AGN, (b) Nova-CVs, (c) Supernova, and (d) X-ray stars.
(The X-ray stars subcategory has 95% of these "known" detections,
and Nova-CVs has the other 5%. To date, there have ben no detections
issued by the MAXI Team in the AGN and Supernova subcategories.)
TEST NOTICES;
GCN impliments a 3rd MAXI type: MAXI Test Notice (GCN Type = 136).
These test notices contain the same types of information and
the same ranges of values as the real MAXI notices. The formats
are identical. These Test notices allows the recipient to "practice"
on these MAXI Unknown and Known types. They are generated
every 3.6 hours and sample from a grid of 20 locations on the sky.
FILTERING and DISTRIBUTION:
All the usual filtering criteria are functional for these 3 Notice types.
All the usual distribution methods and formats are available
(binary socket, voevent xml socket, full-format email, several
short-forms for cells/pagers, and VOEvent text).
HOW MAXI WORKS:
MAXI is an instrument on the International Space Station.
It uses 12 Gas Slit Cameras (GSC) and 2 Solid-state Slit Cameras (SSC)
to monitor the whole sky every 96 minutes as the ISS orbits the Earth.
It routinely monitors ~1000 known sources.
ARCHIVE STORAGE of the NOTICES:
The GCN/FERMI Notices are archived within the GCN website
in the Table of MAXI transients (both Unknown and Known):
http://gcn.gsfc.nasa.gov/gcn/maxi_grbs.html
MORE INFORMATION:
Can be found at: http://gcn.gsfc.nasa.gov/gcn/maxi.html
NOTICE EXAMPLES:
Here is an example of a full-format email Unknown_Source Position Notice:
TITLE: GCN/MAXI NOTICE
NOTICE_DATE: Mon 11 Apr 11 17:26:37 UT
NOTICE_TYPE: MAXI Unknown Source Position
EVENT_ID_NUM: 5648778566
EVENT_RA: 290.75d {+19h 22m 59s} (J2000),
290.90d {+19h 23m 35s} (current),
290.08d {+19h 20m 20s} (1950)
EVENT_DEC: -5.14d {-05d 08' 09"} (J2000),
-5.11d {-05d 06' 49"} (current),
-5.23d {-05d 13' 58"} (1950)
EVENT_ERROR: 1.0 [deg radius, stat+sys, 90% containment]
EVENT_FLUX: 368.0 [mCrab,2-20 keV]
EVENT_DATE: 15648 TJD; 87 DOY; 11/03/28
EVENT_TIME: 82024.00 SOD {22:47:04.00} UT
EVENT_TSCALE: 10s
EVENT_EBAND: L+M, 2-10 keV
BAND_FLUX: 53.0, 8.0 [mCrab] (Src,Bkg: 2-4 keV)
BAND_FLUX: 93.0, 51.0 [mCrab] (Src,Bkg: 4-10 keV)
BAND_FLUX: 222.0,343.0 [mCrab] (Src,Bkg: 10-20 keV)
ISS_LON_LAT: 32.77,-14.77 [deg]
SUN_POSTN: 19.85d {+01h 19m 24s} +8.37d {+08d 22' 26"}
SUN_DIST: 89.71 [deg]
MOON_POSTN: 115.65d {+07h 42m 37s} +18.75d {+18d 45' 10"}
MOON_DIST: 165.59 [deg]
COMMENTS: MAXI Unknown Source Position. GRB or unknown X-ray Transient.
Here is an example of a full-format email Known_Source Position Notice:
TITLE: GCN/MAXI NOTICE
NOTICE_DATE: Mon 11 Apr 11 15:43:28 UT
NOTICE_TYPE: MAXI Known Source Position
EVENT_ID_NUM: 5660774400
SRC_RA: 171.28d {+11h 25m 06s} (J2000),
171.40d {+11h 25m 37s} (current),
170.71d {+11h 22m 51s} (1950)
SRC_DEC: -60.51d {-60d 30' 49"} (J2000),
-60.58d {-60d 34' 33"} (current),
-60.24d {-60d 14' 20"} (1950)
SRC_ERROR: 0.5 [deg radius, stat+sys, 90% containment]
SRC_FLUX: 340.0 [mCrab,2-20 keV]
SRC_DATE: 15660 TJD; 99 DOY; 11/04/09
SRC_TIME: 81047.00 SOD {22:30:47.00} UT
SRC_TSCALE: 4orbit
SRC_EBAND: L+M, 2-10 keV
SRC_CLASS: x-ray-star
SRC_NAME: Cen X-3
BAND_FLUX: 52.0, 13.0 [mCrab] (Src,Bkg: 2-4 keV)
BAND_FLUX: 119.0, 59.0 [mCrab] (Src,Bkg: 4-10 keV)
BAND_FLUX: 169.0,363.0 [mCrab] (Src,Bkg: 10-20 keV)
ISS_LON_LAT: 183.77,-30.72 [deg]
SUN_POSTN: 19.79d {+01h 19m 08s} +8.35d {+08d 20' 51"}
SUN_DIST: 123.65 [deg]
MOON_POSTN: 114.66d {+07h 38m 38s} +18.99d {+18d 59' 30"}
MOON_DIST: 91.65 [deg]
COMMENTS: MAXI Known Source Position.
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
EMAIL: scott at lheamail.gsfc.nasa.gov
PAGER: 3013463733 at cingularme.com
WEB: http://gcn.gsfc.nasa.gov/gcn
//////////////////////////////// Your Current Configuration /////////////////////////
Site_name: VSNET
Lon,Lat= 135.75 35.00
Distribution_method: EMAIL Attachment_format: NONE
Address: vsnet-grb at ooruri.kusastro.kyoto-u.ac.jp
Filter: ALL
Error_limit= 360.100 [deg, diameter]
Delta_T_limit= 999.900 [hr]
Swift_Trigger_ID_filter: Disabled
Sources & Notice Types/Subtypes:
IPN_RAW: Disabled
IPN_POS: Enabled
HETE_TEST: Disabled
TYPE2_TEST: Disabled
INTEGRAL_Test_notices: Disabled
SWIFT_BAT_GRB_TEST: Disabled
AGILE_GRB_TEST: Disabled
FERMI_GBM_TEST: Disabled
FERMI_LAT_TEST: Disabled
INTEGRAL_POINTDIR: Disabled
INTEGRAL_SPIACS: Enabled
INTEGRAL_WAKEUP: Enabled
INTEGRAL_REFINED: Enabled
INTEGRAL_OFFLINE: Enabled
INTEGRAL_WEAK: Disabled
GRB_CNTRPART: Disabled
SWIFT_BAT_GRB_ALERT: enabled
SWIFT_BAT_GRB_POS: enabled
SWIFT_BAT_GRB_POS_NACK: enabled
SWIFT_BAT_SUBTHRESH_POS: Disabled
SWIFT_BAT_GRB_LIGHTCURVE: enabled
SWIFT_FOM_2OBS: enabled
SWIFT_SC_2SLEW: enabled
SWIFT_XRT_POS: enabled
SWIFT_XRT_POS_NACK: enabled
SWIFT_XRT_IMAGE: enabled
SWIFT_UVOT_IMAGE: enabled
SWIFT_UVOT_SRCLIST: enabled
SWIFT_UVOT_POS: enabled
SWIFT_UVOT_POS_NACK: Disabled
SWIFT_XRT_IMAGE_PROC: enabled
SWIFT_UVOT_IMAGE_PROC: enabled
SWIFT_UVOT_SRCLIST_PROC: enabled
SWIFT_POINTDIR: enabled
SWIFT_BAT_TRANS: Disabled
SWIFT_BAT_QL_POS: Disabled
SWIFT_BAT_SLEW_POS: Disabled
SWIFT_BAT_MONITOR: Disabled
SWIFT_TOO_FOM: enabled
SWIFT_TOO_SLEW: enabled
AGILE_GRB_WAKEUP_POS: Disabled
AGILE_GRB_GROUND_POS: Disabled
AGILE_GRB_REFINED_POS: Disabled
AGILE_POINTDIR: Disabled
FERMI_GBM_ALERT: Disabled
FERMI_GBM_FLT_POS: Disabled
FERMI_GBM_GND_POS: Disabled
FERMI_GBM_FIN_POS: Disabled
FERMI_LAT_POS_UPD: Disabled
FERMI_SC_SLEW: Disabled
FERMI_POINTDIR: Disabled
SIMBAD-NED: Disabled
General Adminastrivia Comments/Suggestions:
1) When requesting changes to your configuration,
it helps if you refer to your site_name.
2) If your site has more than one recipient (ie a list),
please review the list to see if anybody should be deleted;
(the volume of bounce-back-to-gcn emails gets large after a while).
3) If a new contact_person has taken over for the project, please inform me.
4) If your site is no longer active, please inform me.
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