srclist overlap message for exposure 1 of trigger 1093742
uvot_overlap.pl vrs. 2010-12-20b fem started at 220119d10h11m54s865394usUT
The observation of trigger 1093742 started 2022-01-18T18:22:45.8
Examining file ./1093742_g126_uvot_sky_srclist.fits
The exposure ID is 664222965
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (192.2795,22.9068) with a roll angle of 103.1
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 (192.2740,22.9090) with a radius of 3.000 arc min
This is 0.330 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 (192.2685,22.9153) with a radius of 0.037 arc min
This is 0.792 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 1 of trigger 1093742
find_uvot_ag.pl vrs. 2020-10-30 fem started at 220119d10h11m57s137438usUT
Observation start time is 2022-01-18T18:22:45.8
Examining file ./1093742_g126_uvot_catalog_srclist.fits
The exposure ID is 664222965
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 11 detected source(s) for 1093742_g126
Aspect correction adds 0.00076 degrees (0.181 sec of time = 2.51 arc sec) to RA
Aspect correction adds -0.00101 degrees (-3.63 arcsec) to Dec
Total aspect correction is 4.41 arcsec
Star catalogs centered at 192.2806 , 22.9263 with radius 6.05 arc min.
n_usno: 249 n_gsc: 0
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 10.12756
RA DEC Mag Color
bright star 0: 192.26479 (12:49:03.55) 23.00966 (+23:00:34.8) 10.13 USNO-V
bright star 1: 192.38693 (12:49:32.86) 22.94340 (+22:56:36.2) 10.65 USNO-V
Mean distance difference (CAT_DELTA) for 9 matched entries is 0.388" for 1093742_g126
Mean and std. dev of mag. difference (MAG_DELTA) are 0.927 and 0.186 for 1093742_g126
Found 2 entries without IDs and 2 entries that are acceptable afterglow candidates for 1093742_g126.
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=192.2740 (12:49:05.76) DEC=22.9090 (+22:54:32.4)
XRT distances are from RA=192.2685 (12:49:04.44) DEC=22.9153 (+22:54:55.0)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1093742_g126 with 5x5 stamp
ra=192.26888 (12:49:04.53) dec=22.91573 (+22:54:56.6) +/- 1.1" mag=18.16+/-0.35
dist=2.0 REFID=10
src: 0 distr. of nearby unmatched sources: 0 0 0 0 0
Found 0 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)
##### This source remains a candidate #####
It has no entries within 4" or brighter than 13 mag
-----------------
Entry 5 in the list of sources is a candidate afterglow for 1093742_g126 with 5x5 stamp
ra=192.27239 (12:49:05.37) dec=22.88656 (+22:53:11.6) +/- 1.1" mag=19.34+/-0.35
dist=104.2 REFID=11
*** The position of this source is inconsistent with the XRT position.
The position is 81.0 arc sec from the BAT position.
src: 5 distr. of nearby unmatched sources: 0 0 0 0 0
Found 1 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
192.2706 22.8854 7.1 -1 USNO-B1 20.88 99.99 99.99
*** 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=192.26888 (12:49:04.53) dec=22.91573 (+22:54:56.6) +/- 1.1" mag=18.16+/-0.35 dist=2.0 REFID=10
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 19.22, 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 1 of trigger 1093742
------ Start for Possible Stand-alone Circular ----
In response to GRB220118 (Swift/BAT trigger 1093742) at 18:20:38 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 99 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 12:49:04.53 = 192.26888
DEC(J2000) = +22:54:56.2 = 22.91562
with a 90%-confidence error radius of about 0.75 arc sec. This position is 1.8
arc sec. from the center of the XRT error circle. The estimated magnitude is
17.83 with a 1-sigma error of about 0.15. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.025.
------- notes for trigger 1093742 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 220119d10h12m02s150284usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1093742
-expid=664222965 -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/1093742/
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 664222965.79432 or about 2022:018:18:22:40 UT
Found 245 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 4% of the srclist region. Found 11 sources in
srclist catalog. Found 2 srclist source(s) without IDs. There are 1 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
19.22 mag.
Found 6 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
20.13 mag. Found 34 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 4% 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?
664222965 98 WHITE 192.26888 22.91573 18.16/19.2 2.0 srclist Yes
664222965 98 WHITE 192.26888 22.91562 17.83/20.1 1.8 image Yes
List afterglow candidates for other finding charts.
664223123 256 U 192.26883 22.91530 18.18/17.9 4.4 srclist Yes
664223123 256 U 192.26872 22.91568 17.36/19.4 3.4 image Yes
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 22.91562
GRB_ERROR: 0.75
GRB_RA: 192.26888
IMAGE_START_TIME: 18:22:40
MAGNITUDE: 17.83
MAG_ERROR: 0.15
MESSAGE_TYPE: ACK
SOURCE: XRT