srclist overlap message for exposure 2 of trigger 1439093
uvot_overlap.pl vrs. 2010-12-20b fem started at 260113d10h35m47s161677usUT
The observation of trigger 1439093 started 2026-01-13T10:19:41.1
Examining file 1439093_g334_uvot_sky_srclist.fits
The exposure ID is 789992381
The exposure time is undefined.
The filter is U.
The uvot region is centered at (357.3653,9.0381) with a roll angle of 242.5
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 (357.3720,9.0410) with a radius of 3.000 arc min
This is 0.432 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
Could not find the location of an XRT error circle
srclist afterglow message for exposure 2 of trigger 1439093
find_uvot_ag.pl vrs. 2023-04-25a fem started at 260113d10h35m48s317803usUT
Observation start time is 2026-01-13T10:19:41.1
Examining file 1439093_g334_uvot_catalog_srclist.fits
The exposure ID is 789992381
The exposure is 250.000 sec.
The bin size is 2 pixels
The filter is U
There are 27 detected source(s) for 1439093_g334
Aspect correction adds -0.00156 degrees (-0.374 sec of time = -5.54 arc sec) to RA
Aspect correction adds -0.00024 degrees (-0.85 arcsec) to Dec
Total aspect correction is 5.60 arcsec
Star catalogs centered at 357.3717 , 9.0340 with radius 7.58 arc min.
n_usno: 322 n_gsc: 230
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.81226
RA DEC Mag Color
bright star 0: 357.39834 (23:49:35.60) 9.10563 (+09:06:20.3) 11.81 USNO-V
*** WARNING -- no XRT distances are available.
Mean distance difference (CAT_DELTA) for 25 matched entries is 0.576" for 1439093_g334
Mean and std. dev of mag. difference (MAG_DELTA) are 1.460 and 0.767 for 1439093_g334
Found 2 entries without IDs and 0 entries that are acceptable afterglow candidates for 1439093_g334.
Acceptable entries have no ID, BAT distance < 200" or XRT distance < 10", 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=357.3720 (23:49:29.28) DEC= 9.0410 (+09:02:27.6)
XRT distances are as reported in catalog file.
Found NO acceptable entries.
Unidentified entry closest to BAT position is no. 6:
ra=357.39829 dec= 9.10700 +/- 1.1" mag=18.62+/-0.35 dist=255.3 REFID=24
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 17.56, BAT distances < 200",
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 2 of trigger 1439093
------ Start for Possible Stand-alone Circular ----
In response to GRB260113 (Swift/BAT trigger 1439093) at 10:14:06 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
297 seconds after the BAT trigger. No credible afterglow candidate has been
found in the initial data products. Data from the 2.7'x2.7' sub-image are not
available at this time. The 8'x8' region for the list of sources generated
on-board covers 100% of the BAT error circle. The list of sources is typically
complete to about 18.0 mag. No correction has been made for the expected
extinction corresponding to E(B-V) of 0.098.
------- notes for trigger 1439093 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 260113d10h35m49s354556usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1439093
-expid=789992381 -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/1439093/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
No XRT position found for srclist. BAT position found.
UVOT exposure began at MET 789992381.1127 or about 0000:11701:10:19:45 UT
Found 318 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 3% of the srclist region. Found 27 sources in
srclist catalog. Found 2 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
17.56 mag.
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?
789992381 297 U srclist found no candidates.
789992381 297 ? image data are not available.
List afterglow candidates for other finding charts.
789992223 139 WHITE 357.42450 9.04688 19.08/18.7 187.9 srclist Yes
789992223 139 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: u
GRB_DEC: 9.04100
GRB_ERROR: 200
GRB_RA: 357.37200
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: BAT