srclist overlap message for exposure 1 of trigger 1208389
uvot_overlap.pl vrs. 2010-12-20b fem started at 240113d10h28m27s296158usUT
The observation of trigger 1208389 started 2024-01-12T17:39:57.8
Examining file ./1208389_g152_uvot_sky_srclist.fits
The exposure ID is 726773997
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (270.6488,24.4800) with a roll angle of 152.1
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 (270.6440,24.4870) with a radius of 3.000 arc min
This is 0.493 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 (270.6440,24.4889) with a radius of 0.033 arc min
This is 0.595 arc min from the center of the uvot region
The area of the XRT error circle is 0.003 sq. arc min
The UVOT/XRT overlap is 0.003 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 1208389
find_uvot_ag.pl vrs. 2023-04-25a fem started at 240113d10h28m29s006832usUT
Observation start time is 2024-01-12T17:39:57.8
Examining file ./1208389_g152_uvot_catalog_srclist.fits
The exposure ID is 726773997
The exposure is 115.015 sec.
The bin size is 2 pixels
The filter is WHITE
There are 59 detected source(s) for 1208389_g152
Aspect correction adds 0.00172 degrees (0.413 sec of time = 5.64 arc sec) to RA
Aspect correction adds -0.00114 degrees (-4.11 arcsec) to Dec
Total aspect correction is 6.98 arcsec
Star catalogs centered at 270.6503 , 24.4799 with radius 6.01 arc min.
n_usno: 760 n_gsc: 878
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.28226
RA DEC Mag Color
bright star 0: 270.65502 (18:02:37.20) 24.49492 (+24:29:41.7) 11.28 USNO-V
Mean distance difference (CAT_DELTA) for 50 matched entries is 0.751" for 1208389_g152
Mean and std. dev of mag. difference (MAG_DELTA) are 2.379 and 0.517 for 1208389_g152
Found 9 entries without IDs and 4 entries that are acceptable afterglow candidates for 1208389_g152.
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.
5 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=270.6440 (18:02:34.56) DEC=24.4870 (+24:29:13.2)
XRT distances are from RA=270.6440 (18:02:34.56) DEC=24.4889 (+24:29:20.2)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1208389_g152 with 5x5 stamp
ra=270.64401 (18:02:34.56) dec=24.48913 (+24:29:20.9) +/- 1.1" mag=18.02+/-0.35
dist=0.7 REFID=25
src: 0 distr. of nearby unmatched sources: 0 0 0 0 0
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
270.6399 24.4857 18.3 -1 USNO-B1 17.61 16.53 17.01
270.6402 24.4918 15.8 -1 USNO-B1 17.85 16.64 17.18
270.6399 24.4857 18.3 -1 GSC2.3 16.58 17.62 99.99
270.6383 24.4872 20.0 -1 GSC2.3 99.99 21.94 99.99
270.6402 24.4917 15.4 -1 GSC2.3 16.77 17.87 99.99
##### This source remains a candidate #####
It has no entries within 4" or brighter than 13 mag
-----------------
Entry 16 in the list of sources is a candidate afterglow for 1208389_g152 with 3x3 stamp
ra=270.67354 (18:02:41.65) dec=24.47735 (+24:28:38.5) +/- 1.1" mag=18.83+/-0.35
dist=105.4 REFID=47
*** The position of this source is inconsistent with the XRT position.
The position is 102.8 arc sec from the BAT position.
src: 16 distr. of nearby unmatched sources: 0 0 0 0 0
Found 6 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
270.6733 24.4765 3.2 -1 USNO-B1 14.67 13.75 14.16 *
270.6738 24.4801 10.0 -1 USNO-B1 18.30 16.32 17.20
270.6787 24.4787 17.7 -1 USNO-B1 20.73 19.79 20.21
270.6734 24.4764 3.4 -1 GSC2.3 13.59 14.64 99.99 *
270.6739 24.4801 9.9 -1 GSC2.3 16.41 18.21 99.99
270.6792 24.4785 18.9 -1 GSC2.3 19.63 21.02 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 23 in the list of sources is a candidate afterglow for 1208389_g152 with 5x5 stamp
ra=270.60939 (18:02:26.25) dec=24.46651 (+24:27:59.5) +/- 1.1" mag=17.47+/-0.35
dist=139.2 REFID=10
*** The position of this source is inconsistent with the XRT position.
The position is 135.3 arc sec from the BAT position.
src: 23 srclist_match has ID
src: 23 distr. of nearby unmatched sources: 1 0 0 0 0
Found 6 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
270.6115 24.4709 17.2 -1 USNO-B1 20.18 19.02 19.53
270.6089 24.4670 2.5 -1 USNO-B1 14.88 13.36 14.03 *
270.6078 24.4673 5.8 -1 USNO-B1 99.99 14.30 99.99
270.6115 24.4708 17.0 -1 GSC2.3 19.09 20.18 99.99
270.6095 24.4667 0.9 -1 GSC2.3 14.49 15.66 99.99 *
270.6074 24.4674 7.2 -1 GSC2.3 14.93 16.63 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 37 in the list of sources is a candidate afterglow for 1208389_g152 with 3x3 stamp
ra=270.67929 (18:02:43.03) dec=24.53156 (+24:31:53.6) +/- 1.1" mag=18.78+/-0.35
dist=192.1 REFID=44
*** The position of this source is inconsistent with the XRT position.
The position is 197.7 arc sec from the BAT position.
src: 37 distr. of nearby unmatched sources: 0 0 0 0 0
Found 6 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
270.6734 24.5327 19.7 -1 USNO-B1 19.88 17.32 18.46
270.6791 24.5308 3.0 -1 USNO-B1 15.54 14.38 14.89 *
270.6813 24.5353 15.0 -1 USNO-B1 20.55 19.78 20.12
270.6736 24.5327 19.0 -1 GSC2.3 17.42 19.55 99.99
270.6791 24.5307 3.3 -1 GSC2.3 14.26 15.58 99.99 *
270.6815 24.5353 15.1 -1 GSC2.3 19.74 20.94 99.99
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:
Unmatched source ra=270.64401 (18:02:34.56) dec=24.48913 (+24:29:20.9) +/- 1.1" mag=18.02+/-0.35 dist=0.7 REFID=25
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 19.08, XRT distances < 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 1208389
------ Start for Possible Stand-alone Circular ----
In response to GRB240112 (Swift/BAT trigger 1208389) at 17:37:24 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 115 seconds with the White filter
starting 120 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 18:02:34.59 = 270.64414
DEC(J2000) = +24:29:21.2 = 24.48923
with a 90%-confidence error radius of about 0.75 arc sec. This position is 1.1
arc sec. from the center of the XRT error circle. The estimated magnitude is
16.73 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.107.
------- notes for trigger 1208389 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 240113d10h28m32s401186usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1208389
-expid=726773997 -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/1208389/
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 726773997.77406 or about 2024:012:17:39:52 UT
Found 865 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 16% of the srclist region. Found 59 sources in
srclist catalog. Found 9 srclist source(s) without IDs. There are 1 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
19.08 mag.
Found 11 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 4 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
19.92 mag. Found 151 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 16% 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?
726773997 119 WHITE 270.64401 24.48913 18.02/19.1 0.7 srclist Yes
726773997 119 WHITE 270.64414 24.48923 16.73/19.9 1.1 image Yes
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 24.48923
GRB_ERROR: 0.75
GRB_RA: 270.64414
IMAGE_START_TIME: 17:39:52
MAGNITUDE: 16.73
MAG_ERROR: 0.14
MESSAGE_TYPE: ACK
SOURCE: XRT