GCN Circular 1529
Subject
INTEGRAL GRBs added to GCN
Date
2002-09-03T00:53:03Z (22 years ago)
From
Scott Barthelmy at NASA/GSFC <scott@lheamail.gsfc.nasa.gov>
INTRODUCTION:
The INTEGRAL mission will soon launch (Oct 02) and two of its instruments
have the ability to locate (or just detect) GRBs. They expect 1-2 bursts/month
with a location uncertainty of <3 arcmin (radius) and with a time delay
of 1-2 minutes.
INTEGRAL and GCN:
There are 5 types of messages available from the INTEGRAL mission. The GCN
will distribute these INTEGRAL messages. You can get these messages
directly from the INTEGRAL ISDC or you can get them through GCN. There are
several advantages to using GCN:
a) For socket sites, you only have to maintain a single socket connection.
And there is no additional software involved.
b) There is only one format. For socket sites, the INTEGRAL-direct packet
is 400 bytes (and the GCN packet is 160 bytes). As part of the redistribution
service, GCN reformats the INTEGRAL information into the standard GCN
format -- this means the locations within the packet are in the standard
locations and that the information has been integerized (no need to understand
fl.pt. conversions). The date & time have also been converted to the standard
GCN format.
c) And there is e-mail format. Currently, the only format available directly
from the INTEGRAL machine is the Internet socket packet.
GCN will generate the standard format & style email, pager, and cellphone
messages for the INTEGRAL messages.
The down-side to using GCN instead of INTEGRAL-direct is an increase
in the time delay. But this is small: 0.5-1.0 sec added onto the nominal
1-2 min delay already from the INTEGRAL data telemetry & processing system.
TEST NOTICES:
In addition to the 5 basic GCN/INTEGRAL types, Test Notice versions of each
type are also available (via sockets, email, pagers, etc). These Test Notices
are available immediately (even prior to launch). They are issued every hour.
Socket sites may wish to subscribe to these Test packets to develope
their operations wrt to INTEGRAL prior to the October launch.
FORMATS:
For the sockets sites, the table below shows the content & format
of the 5 GCN/INTEGRAL packets. For the complete details of these packets,
please see the "Socket Packet Definition" document:
http://gcn.gsfc.nasa.gov/gcn/sock_pkt_def_doc.html
The 5 Notices in e-mail format are shown below; plus a couple of pager and
short-pager formats are also shown. The rest can be found at:
http://gcn.gsfc.nasa.gov/gcn/integral.html
ACTION ITEM:
Sites wishing to have these GCN/INTEGRAL Notices added to their sites's
configuration need to send an email to scott@lheamail.gsfc.nasa.gov.
Please be sure to identify the site_name in your request (or at least
some piece of information that will help me identify you from the other 240+
sites in the configuration file). New sites are always welcome; and you
can learn about GCN and answer the 13 questions needed to create a new entry
at http://gcn.gsfc.nasa.gov/gcn/invitation.html.
Sincerely,
Scott Barthelmy
GCN Operations
NASA-GSFC
301-286-3106
Type: 51 52 53 54 55
INTEGRAL_ INTEGRAL_ INTEGRAL_ INTEGRAL_ INTEGRAL_
POINTDIR SPIACS WAKEUP REFINED OFFLINE
Loc:
0 pkt_type pkt_type pkt_type pkt_type pkt_type
1 pkt_sernum pkt_sernum pkt_sernum pkt_sernum pkt_sernum
2 pkt_hopcnt pkt_hopcnt pkt_hopcnt pkt_hopcnt pkt_hopcnt
3 pkt_sod pkt_sod pkt_sod pkt_sod pkt_sod
4 trig_sub_num trig_sub_num trig_sub_num trig_sub_num trig_sub_num
5 slew_tjd burst_tjd burst_tjd burst_tjd burst_tjd
6 slew_sod burst_sod burst_sod burst_sod burst_sod
7 - - burst_ra burst_ra burst_ra
8 - - burst_dec burst_dec burst_dec
9 - det_flags det_flags det_flags det_flags
10 - inten_sigma inten_sigma inten_sigma inten_sigma
11 - - burst_error burst_error burst_error
12 test_mpos test_mpos test_mpos test_mpos test_mpos
13 - time_scale time_scale time_scale time_scale
14 next_sc_ra - sc_ra sc_ra sc_ra
15 next_sc_dec - sc_dec sc_dec sc_dec
16 - time_error time_error time_error time_error
17 - - - - -
18 - - - - -
19 misc_att misc_att misc_att misc_att misc_att
20-38 - - - - -
39 pkt_term pkt_term pkt_term pkt_term pkt_term
===========================================================================
TITLE: GCN/INTEGRAL NOTICE
NOTICE_DATE: Sun 01 Sep 02 18:08:03 UT
NOTICE_TYPE: INTEGRAL Wakeup
TRIGGER_NUM: 0, Sub_Num: 0
GRB_RA: 1.2037d {+00h 04m 49s} (J2000),
1.2343d {+00h 04m 56s} (current),
0.5630d {+00h 02m 15s} (1950)
GRB_DEC: +2.3323d {+02d 19' 56"} (J2000),
+2.3456d {+02d 20' 44"} (current),
+2.0539d {+02d 03' 14"} (1950)
GRB_ERROR: 1.02 [armin, radius, statistical only]
GRB_INTEN: 11.34 [sigma]
GRB_TIME: 43403.68 SOD {12:03:23.68} UT
GRB_DATE: 12417 TJD; 143 DOY; 02/05/23
SC_RA: 1.46 [deg]
SC_DEC: 2.48 [deg]
SUN_POSTN: 60.11d {+04h 00m 27s} +20.60d {+20d 35' 60"}
SUN_DIST: 60.14 [deg]
MOON_POSTN: 201.73d {+13h 26m 56s} -4.51d {-04d 30' 47"}
MOON_DIST: 159.43 [deg]
GAL_COORDS: 100.23,-58.47 [deg] galactic lon,lat of the burst
ECL_COORDS: 2.03, 1.66 [deg] ecliptic lon,lat of the burst
COMMENTS: INTEGRAL GRB Coordinates.
===========================================================================
GCN/INTEGRAL GRB
Wakeup
RA=1.234d DEC=+2.346d
TIME: 12:03:23.68 UT
I=11.34 sigma
===========================================================================
INTEGRAL
Wakeup
RA=0.563 DEC=+2.054d
===========================================================================
TITLE: GCN/INTEGRAL NOTICE
NOTICE_DATE: Sun 01 Sep 02 18:08:07 UT
NOTICE_TYPE: INTEGRAL Refined
TRIGGER_NUM: 0, Sub_Num: 0
GRB_RA: 1.2037d {+00h 04m 49s} (J2000),
1.2343d {+00h 04m 56s} (current),
0.5630d {+00h 02m 15s} (1950)
GRB_DEC: +2.3323d {+02d 19' 56"} (J2000),
+2.3456d {+02d 20' 44"} (current),
+2.0539d {+02d 03' 14"} (1950)
GRB_ERROR: 1.02 [armin, radius, statistical only]
GRB_INTEN: 11.34 [sigma]
GRB_TIME: 43403.68 SOD {12:03:23.68} UT
GRB_DATE: 12417 TJD; 143 DOY; 02/05/23
SC_RA: 1.46 [deg]
SC_DEC: 2.48 [deg]
SUN_POSTN: 60.11d {+04h 00m 27s} +20.60d {+20d 35' 60"}
SUN_DIST: 60.14 [deg]
MOON_POSTN: 201.73d {+13h 26m 56s} -4.51d {-04d 30' 47"}
MOON_DIST: 159.43 [deg]
GAL_COORDS: 100.23,-58.47 [deg] galactic lon,lat of the burst
ECL_COORDS: 2.03, 1.66 [deg] ecliptic lon,lat of the burst
COMMENTS: INTEGRAL GRB Coordinates.
===========================================================================
TITLE: GCN/INTEGRAL NOTICE
NOTICE_DATE: Sun 01 Sep 02 18:08:09 UT
NOTICE_TYPE: INTEGRAL Offline
TRIGGER_NUM: 234, Sub_Num: 0
GRB_RA: 1.2037d {+00h 04m 49s} (J2000),
1.2343d {+00h 04m 56s} (current),
0.5630d {+00h 02m 15s} (1950)
GRB_DEC: +2.3323d {+02d 19' 56"} (J2000),
+2.3456d {+02d 20' 44"} (current),
+2.0539d {+02d 03' 14"} (1950)
GRB_ERROR: 1.02 [armin, radius, statistical only]
GRB_INTEN: 11.34 [sigma]
GRB_TIME: 43403.68 SOD {12:03:23.68} UT
GRB_DATE: 12417 TJD; 143 DOY; 02/05/23
SC_RA: 1.46 [deg]
SC_DEC: 2.48 [deg]
SUN_POSTN: 60.11d {+04h 00m 27s} +20.60d {+20d 35' 60"}
SUN_DIST: 60.14 [deg]
MOON_POSTN: 201.73d {+13h 26m 56s} -4.51d {-04d 30' 47"}
MOON_DIST: 159.43 [deg]
GAL_COORDS: 100.23,-58.47 [deg] galactic lon,lat of the burst
ECL_COORDS: 2.03, 1.66 [deg] ecliptic lon,lat of the burst
COMMENTS: INTEGRAL GRB Coordinates.
===========================================================================
TITLE: GCN/INTEGRAL NOTICE
NOTICE_DATE: Mon 02 Sep 02 18:08:01 UT
NOTICE_TYPE: INTEGRAL Pointing Direction
NEXT_POINT_RA: 3.9584d {+00h 15m 50s} (J2000)
NEXT_POINT_DEC: -2.4058d {-02d 24' 20"} (J2000)
SLEW_TIME: 43556.08 SOD {12:05:56.08} UT
SLEW_DATE: 12417 TJD; 143 DOY; 02/05/23
SUN_POSTN: 60.11d {+04h 00m 27s} +20.60d {+20d 36' 01"}
SUN_DIST: 59.56 [deg]
MOON_POSTN: 201.76d {+13h 27m 02s} -4.52d {-04d 31' 26"}
MOON_DIST: 160.95 [deg]
GAL_COORDS: 102.40,-63.85 [deg] galactic lon,lat of the pointing direction
ECL_COORDS: 2.68, -3.78 [deg] ecliptic lon,lat of the pointing direction
COMMENTS: INTEGRAL TEST Slew Notice.
===========================================================================
TITLE: GCN/INTEGRAL NOTICE
NOTICE_DATE: Sun 01 Sep 02 18:08:05 UT
NOTICE_TYPE: INTEGRAL SPI ACS Trigger
TRIGGER_NUM: 0, Sub_Num: 0
GRB_INTEN: 11.34 [sigma]
GRB_TIME: 43403.68 SOD {12:03:23.68} UT
GRB_DATE: 12417 TJD; 143 DOY; 02/05/23
COMMENTS: INTEGRAL SPI_ACS GRB Trigger.
===========================================================================