srclist overlap message for exposure 3 of trigger 1429020
uvot_overlap.pl vrs. 2010-12-20b fem started at 251230d08h04m43s801475usUT
The observation of trigger 1429020 started 2025-12-30T01:36:45.7
Examining file ./1429020_g903_uvot_sky_srclist.fits
The exposure ID is 788751405
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (179.9042,11.4344) with a roll angle of 111.4
It is square with sides of 12.05 arc min. for an area of 145.15 sq arc min
The BAT error circle is centered at (179.8940,11.4150) with a radius of 3.000 arc min
This is 1.310 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 (179.8974,11.4383) with a radius of 0.037 arc min
This is 0.462 arc min from the center of the uvot region
The area of the XRT error circle is 0.004 sq. arc min
The UVOT/XRT overlap is 0.004 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 3 of trigger 1429020
find_uvot_ag.pl vrs. 2023-04-25a fem started at 251230d08h05m38s113870usUT
Observation start time is 2025-12-30T01:36:45.7
Examining file ./1429020_g903_uvot_catalog_srclist.fits
The exposure ID is 788751405
The exposure is 145.607 sec.
The bin size is 2 pixels
The filter is WHITE
There are 50 detected source(s) for 1429020_g903
Aspect correction adds 0.00081 degrees (0.194 sec of time = 2.85 arc sec) to RA
Aspect correction adds -0.00122 degrees (-4.40 arcsec) to Dec
Total aspect correction is 5.24 arcsec
Star catalogs centered at 179.9083 , 11.4307 with radius 8.29 arc min.
n_usno: 387 n_gsc: 352
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.77268
RA DEC Mag Color
bright star 0: 179.96148 (11:59:50.76) 11.53156 (+11:31:53.6) 11.77 USNO-V
Mean distance difference (CAT_DELTA) for 38 matched entries is 0.584" for 1429020_g903
Mean and std. dev of mag. difference (MAG_DELTA) are 1.234 and 0.471 for 1429020_g903
Found 12 entries without IDs and 4 entries that are acceptable afterglow candidates for 1429020_g903.
Acceptable entries have no ID, XRT distances < 5.5", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
0 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=179.8940 (11:59:34.56) DEC=11.4150 (+11:24:54.0)
XRT distances are from RA=179.8974 (11:59:35.37) DEC=11.4383 (+11:26:17.9)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1429020_g903 with 5x5 stamp
ra=179.89737 (11:59:35.37) dec=11.43856 (+11:26:18.8) +/- 1.1" mag=15.96+/-0.35
dist=0.9 REFID=9
src: 0 distr. of nearby unmatched sources: 0 0 0 0 0
Found 4 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
179.9011 11.4415 16.8 -1 USNO-B1 20.86 20.15 20.46
179.8977 11.4429 15.7 -1 USNO-B1 20.38 20.00 20.17
179.9013 11.4416 17.7 -1 GSC2.3 20.01 20.84 99.99
179.8979 11.4428 15.3 -1 GSC2.3 20.25 21.15 99.99
##### This source remains a candidate #####
It has no entries within 4" or brighter than 13 mag
-----------------
Entry 3 in the list of sources is a candidate afterglow for 1429020_g903 with 3x3 stamp
ra=179.90813 (11:59:37.95) dec=11.46642 (+11:27:59.1) +/- 1.1" mag=19.81+/-0.35
dist=108.1 REFID=44
*** The position of this source is inconsistent with the XRT position.
The position is 191.7 arc sec from the BAT position.
src: 3 distr. of nearby unmatched sources: 0 0 0 0 0
Found 0 entries in star catalog(s) within 20.0" of the candidate.
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 17 in the list of sources is a candidate afterglow for 1429020_g903 with 3x3 stamp
ra=179.87219 (11:59:29.33) dec=11.37934 (+11:22:45.6) +/- 1.1" mag=19.48+/-0.35
dist=230.1 REFID=43
*** The position of this source is inconsistent with the XRT position.
The position is 149.7 arc sec from the BAT position.
src: 17 distr. of nearby unmatched sources: 0 0 0 0 0
Found 0 entries in star catalog(s) within 20.0" of the candidate.
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 20 in the list of sources is a candidate afterglow for 1429020_g903 with 3x3 stamp
ra=179.92493 (11:59:41.98) dec=11.37952 (+11:22:46.3) +/- 1.1" mag=19.84+/-0.35
dist=232.9 REFID=47
*** The position of this source is inconsistent with the XRT position.
The position is 168.0 arc sec from the BAT position.
src: 20 distr. of nearby unmatched sources: 0 0 0 0 0
Found 0 entries in star catalog(s) within 20.0" of the candidate.
*** If XRT position is correct, then this is NOT the afterglow
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=179.89737 (11:59:35.37) dec=11.43856 (+11:26:18.8) +/- 1.1" mag=15.96+/-0.35 dist=0.9 REFID=9
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 19.20, XRT distances < 5.5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 1 good candidate(s) found.
srclist paragraph message for exposure 3 of trigger 1429020
------ Start for Possible Stand-alone Circular ----
In response to GRB251230 (Swift/BAT trigger 1429020) at 01:21:41 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 146 seconds with the White filter
starting 867 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 11:59:35.38 = 179.89740
DEC(J2000) = +11:26:18.7 = 11.43854
with a 90%-confidence error radius of about 0.74 arc sec. This position is 0.9
arc sec. from the center of the XRT error circle. The estimated magnitude is
15.62 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.024.
------- notes for trigger 1429020 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 251230d08h05m46s155466usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1429020
-expid=788751405 -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/1429020/
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 788751405.67052 or about 2025:365:01:36:40 UT
Found 383 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 3% of the srclist region. Found 50 sources in
srclist catalog. Found 12 srclist source(s) without IDs. There are 1 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
19.20 mag.
Found 3 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 1 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.40 mag. Found 24 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 2% of the Genie image region.
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?
788751405 866 WHITE 179.89737 11.43856 15.96/19.2 0.9 srclist Yes
788751405 866 WHITE 179.89740 11.43854 15.62/20.4 0.9 image Yes
List afterglow candidates for other finding charts.
788750614 75 WHITE 179.89780 11.43891 15.17/19.2 2.6 srclist Yes
788750614 75 WHITE 179.89760 11.43870 13.74/20.6 1.6 image Yes
788750826 287 U 179.89752 11.43848 14.18/18.1 0.8 srclist Yes
788750826 287 U 179.89739 11.43848 13.71/20.4 0.6 image Yes
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 11.43854
GRB_ERROR: 0.74
GRB_RA: 179.89740
IMAGE_START_TIME: 01:36:40
MAGNITUDE: 15.62
MAG_ERROR: 0.14
MESSAGE_TYPE: ACK
SOURCE: XRT