srclist overlap message for exposure 1 of trigger 938899
uvot_overlap.pl vrs. 2010-12-20b fem started at 191122d21h06m08s281968usUT
The observation of trigger 938899 started 2019-11-22T13:35:03.6
Examining file ./938899_g126_uvot_sky_srclist.fits
The exposure ID is 596122503
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (54.2978,-32.1780) with a roll angle of 184.1
It is square with sides of 8.03 arc min. for an area of 64.51 sq arc min
The BAT error circle is centered at (54.2960,-32.1760) with a radius of 3.000 arc min
This is 0.153 arc min from the center of the uvot region
The area of the BAT error circle is 28.27 sq. arc min
The UVOT/BAT overlap is 28.27 sq. arc min or 1.00 of the BAT error circle
The XRT error circle is centered at (54.2699,-32.1866) with a radius of 0.027 arc min
This is 1.510 arc min from the center of the uvot region
The area of the XRT error circle is 0.002 sq. arc min
The UVOT/XRT overlap is 0.002 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 938899
find_uvot_ag.pl vrs. 2017-02-17 fem started at 191122d21h06m12s720237usUT
Observation start time is 2019-11-22T13:35:03.6
Examining file ./938899_g126_uvot_catalog_srclist.fits
The exposure ID is 596122503
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 27 detected source(s) for 938899_g126
Aspect correction adds 0.00041 degrees (0.099 sec of time = 1.26 arc sec) to RA
Aspect correction adds -0.00094 degrees (-3.37 arcsec) to Dec
Total aspect correction is 3.60 arcsec
Star catalogs centered at 54.2938 , -32.1659 with radius 6.17 arc min.
n_usno: 460 n_gsc: 0
*** WARNING -- bright star catalog has 3 entries brighter than 12 mag
The brightest has mag 11.495
RA DEC Mag Color
bright star 0: 54.24139 (03:36:57.93) -32.12759 (-32:07:39.3) 11.88 USNO-R
bright star 1: 54.24513 (03:36:58.83) -32.21128 (-32:12:40.6) 11.50 USNO-R
bright star 2: 54.32472 (03:37:17.93) -32.07858 (-32:04:42.9) 11.55 USNO-R
Mean distance difference (CAT_DELTA) for 26 matched entries is 0.867" for 938899_g126
Mean and std. dev of mag. difference (MAG_DELTA) are 1.143 and 0.608 for 938899_g126
Found 6 entries without IDs and 2 entries that are acceptable afterglow candidates for 938899_g126.
Acceptable entries have no ID, XRT distances < 5", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
2 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=54.2960 (03:37:11.04) DEC=-32.1760 (-32:10:33.6)
XRT distances are from RA=54.2699 (03:37:04.77) DEC=-32.1866 (-32:11:11.9)
-----------------
Entry 14 in the list of sources is a candidate afterglow for 938899_g126 with 5x5 stamp
ra=54.27589 (03:37:06.21) dec=-32.12776 (-32:07:39.9) +/- 1.1" mag=20.12+/-0.35
dist=212.8 REFID=18
*** The position of this source is inconsistent with the XRT position.
The position is 184.2 arc sec from the BAT position.
src: 14 distr. of nearby unmatched sources: 0 1 0 0 2
Found 5 entries in star catalog(s) within 20.0" of the candidate.
printing all entries
(Entries within 2 arc sec of a source list entry are considered a match)
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
54.2803 -32.1304 16.3 -1 USNO-B1 21.56 19.31 20.31
54.2783 -32.1257 10.5 -1 USNO-B1 19.94 19.76 19.84
54.2768 -32.1254 9.0 -1 USNO-B1 99.99 18.89 99.99
54.2757 -32.1255 8.0 -1 USNO-B1 21.38 19.54 20.36
54.2733 -32.1254 11.7 -1 USNO-B1 12.73 11.43 12.01 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 15 in the list of sources is a candidate afterglow for 938899_g126 with 5x5 stamp
ra=54.26914 (03:37:04.59) dec=-32.12664 (-32:07:35.9) +/- 1.1" mag=20.24+/-0.35
dist=216.0 REFID=24
*** The position of this source is inconsistent with the XRT position.
The position is 195.6 arc sec from the BAT position.
src: 15 distr. of nearby unmatched sources: 0 0 1 0 2
Found 2 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
54.2733 -32.1254 13.4 -1 USNO-B1 12.73 11.43 12.01 *
54.2685 -32.1253 5.1 -1 USNO-B1 20.92 19.25 19.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
There are no candidates inside BAT error circle, but outside XRT error circle.
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 19.22, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
srclist paragraph message for exposure 1 of trigger 938899
------ Start for Possible Stand-alone Circular ----
In response to GRB191122 (Swift/BAT trigger 938899) at 13:32:56 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 103 seconds after the BAT trigger. No credible afterglow candidate has
been found in the initial data products. The 2.7'x2.7' sub-image covers 100% of
the XRT error circle. The typical 3-sigma upper limit has been about 19.6 mag.
The 8'x8' region for the list of sources generated on-board covers 100% of the
XRT error circle. The list of sources is typically complete to about 18 mag. No
correction has been made for the expected extinction corresponding to E(B-V) of
0.01.
------- notes for trigger 938899 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 191122d21h06m16s312604usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=938899
-expid=596122503 -meonly -msg_srclist
Results from standard processing of UVOT TDRSS data for this trigger should be
available at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/938899/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
XRT position found for srclist. XRT position found for Genie image. BAT
position found.
UVOT exposure began at MET 596122503.64752 or about 2019:326:13:34:58 UT
Found 456 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 8% of the srclist region. Found 27 sources in
srclist catalog. Found 6 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
19.22 mag.
Found 2 source(s) in Genie image catalog. Found 0 Genie image source(s) without
IDs. There are 0 good candidate(s) in the Genie image catalog. Good candidates
must be brighter than 20.94 mag. Found 51 stars in largest star catalog for
Genie image region. The stars will eliminate afterglows from about 7% of the
Genie image region.
Genie image analysis:
Found 36854.5 counts in the large background region of 6204.0 pixels or a rate
of 5.940 counts/pixel in a radius of 45.0 arcsec. Based on this background, the
typical 5-sigma UL at a random point in the Genie image is 20.38 mag. for a
4-arcsec aperture.
Found 1193.2 counts in the XRT position region of 198.0 pixels or a rate of
6.026 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 0.074 +/- 0.248 (1-sigma) cps or
22.60 mag and a range from 21.01 to 99.99 mag. The 3-sigma UL at the XRT
position is 0.818 cps or 20.00 mag. The closest srclist source has ra= 54.2786
dec= -32.1588 mag=20.07 sep=103.63". The closest Genie source has ra= 54.2709
dec= -32.1773 mag=20.43 sep=33.60".
All AG candidates sorted by magnitude for the current finding chart.
(U/V/White SRCLIST mags < 17.5/17.5/18.5 are reliable. Mag > 18.5/18.5/19.5 are
not. Others are uncertain.)
(U/V/White Genie image mags < 18.0/18.0/19.0 are reliable. Mag > 19.0/19.0/20.0
are not. Others are uncertain.)
(Magnitudes followed by * have been corrected for exposure.)
---MET--- -dt- filter ---RA-- ---DEC--- -MAG/Limit Dist(") Source Asp.Corr?
596122503 102 WHITE srclist found no candidates.
596122503 102 WHITE image found no candidates.
List afterglow candidates for other finding charts.
596122716 315 U srclist found no candidates.
596122716 315 U image found no candidates.
596123273 872 WHITE srclist found no candidates.
596123273 872 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -32.18664
GRB_ERROR: 5
GRB_RA: 54.26987
IMAGE_START_TIME: 13:34:58
MAGNITUDE: 20.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT