srclist overlap message for exposure 1 of trigger 1046782
uvot_overlap.pl vrs. 2010-12-20b fem started at 210505d04h54m48s000438usUT
The observation of trigger 1046782 started 2021-05-04T13:58:57.9
Examining file ./1046782_g641829537_uvot_sky_srclist.fits
The exposure ID is 641829537
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (222.3746,-30.5479) with a roll angle of 178.1
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 (222.3792,-30.5565) with a radius of 2.100 arc min
This is 0.568 arc min from the center of the uvot region
The area of the BAT error circle is 13.85 sq. arc min
The UVOT/BAT overlap is 13.85 sq. arc min or 1.00 of the BAT error circle
The XRT error circle is centered at (222.3912,-30.5334) with a radius of 0.033 arc min
This is 1.219 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 1046782
find_uvot_ag.pl vrs. 2020-10-30 fem started at 210505d04h54m49s505798usUT
Observation start time is 2021-05-04T13:58:57.9
Examining file ./1046782_g641829537_uvot_catalog_srclist.fits
The exposure ID is 641829537
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 153 detected source(s) for 1046782_g641829537
Aspect correction adds -0.00076 degrees (-0.182 sec of time = -2.36 arc sec) to RA
Aspect correction adds -0.00008 degrees (-0.29 arcsec) to Dec
Total aspect correction is 2.37 arcsec
Star catalogs centered at 222.3612 , -30.5479 with radius 6.46 arc min.
n_usno: 817 n_gsc: 0
*** WARNING -- bright star catalog has 5 entries brighter than 12 mag
The brightest has mag 10.30536
RA DEC Mag Color
bright star 0: 222.35941 (14:49:26.26) -30.54590 (-30:32:45.3) 11.93 USNO-V
bright star 1: 222.34559 (14:49:22.94) -30.59441 (-30:35:39.9) 10.47 USNO-V
bright star 2: 222.42270 (14:49:41.45) -30.49579 (-30:29:44.8) 11.38 USNO-V
bright star 3: 222.41609 (14:49:39.86) -30.62622 (-30:37:34.4) 11.17 USNO-V
bright star 4: 222.44267 (14:49:46.24) -30.62219 (-30:37:19.9) 10.31 USNO-V
Mean distance difference (CAT_DELTA) for 100 matched entries is 0.682" for 1046782_g641829537
Mean and std. dev of mag. difference (MAG_DELTA) are 1.272 and 0.897 for 1046782_g641829537
Found 55 entries without IDs and 7 entries that are acceptable afterglow candidates for 1046782_g641829537.
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.
44 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=222.3792 (14:49:31.00) DEC=-30.5565 (-30:33:23.5)
XRT distances are from RA=222.3912 (14:49:33.88) DEC=-30.5334 (-30:32:00.4)
*** WARNING 35 per cent of entries have no IDs.
-----------------
Entry 12 in the list of sources is a candidate afterglow for 1046782_g641829537 with 1x1 stamp
ra=222.31508 (14:49:15.62) dec=-30.55978 (-30:33:35.2) +/- 1.1" mag=19.43+/-0.35
dist=254.2 REFID=151
*** The position of this source is inconsistent with the XRT position.
The position is 199.0 arc sec from the BAT position.
src: 12 distr. of nearby unmatched sources: 0 0 0 0 0
Found 3 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
222.3114 -30.5568 15.7 -1 USNO-B1 20.12 18.08 18.99
222.3116 -30.5579 12.7 -1 USNO-B1 21.69 18.71 20.03
222.3107 -30.5576 15.6 -1 USNO-B1 20.94 18.59 19.63
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 26 in the list of sources is a candidate afterglow for 1046782_g641829537 with 1x1 stamp
ra=222.36022 (14:49:26.45) dec=-30.54102 (-30:32:27.7) +/- 1.1" mag=19.43+/-0.35
dist=99.8 REFID=150
*** The position of this source is inconsistent with the XRT position.
The position is 81.1 arc sec from the BAT position.
src: 26 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
222.3594 -30.5459 17.7 -1 USNO-B1 12.89 11.16 11.93 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 87 in the list of sources is a candidate afterglow for 1046782_g641829537 with 3x3 stamp
ra=222.34810 (14:49:23.55) dec=-30.60412 (-30:36:14.8) +/- 1.1" mag=19.40+/-0.35
dist=287.3 REFID=114
*** The position of this source is inconsistent with the XRT position.
The position is 196.5 arc sec from the BAT position.
src: 87 distr. of nearby unmatched sources: 0 0 1 3 2
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
222.3529 -30.6022 16.3 -1 USNO-B1 19.43 18.56 18.95
222.3460 -30.6024 8.8 -1 USNO-B1 19.98 19.39 19.65
222.3467 -30.6029 6.3 -1 USNO-B1 19.94 19.16 19.51
222.3485 -30.6046 2.0 -1 USNO-B1 17.76 15.88 16.72 *
222.3486 -30.6055 5.3 -1 USNO-B1 19.51 17.64 18.47
222.3479 -30.6054 4.7 -1 USNO-B1 99.99 17.98 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 92 in the list of sources is a candidate afterglow for 1046782_g641829537 with 3x3 stamp
ra=222.35644 (14:49:25.55) dec=-30.60082 (-30:36:03.0) +/- 1.1" mag=19.72+/-0.35
dist=265.4 REFID=125
*** The position of this source is inconsistent with the XRT position.
The position is 174.3 arc sec from the BAT position.
src: 92 distr. of nearby unmatched sources: 0 0 1 1 1
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
222.3570 -30.5953 19.8 -1 USNO-B1 16.98 15.38 16.09
222.3529 -30.6022 12.1 -1 USNO-B1 19.43 18.56 18.95
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 93 in the list of sources is a candidate afterglow for 1046782_g641829537 with 3x3 stamp
ra=222.35319 (14:49:24.77) dec=-30.60305 (-30:36:11.0) +/- 1.1" mag=19.51+/-0.35
dist=276.8 REFID=93
*** The position of this source is inconsistent with the XRT position.
The position is 185.8 arc sec from the BAT position.
src: 93 distr. of nearby unmatched sources: 0 1 2 1 1
Found 5 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
222.3529 -30.6022 3.2 -1 USNO-B1 19.43 18.56 18.95 *
222.3485 -30.6046 15.5 -1 USNO-B1 17.76 15.88 16.72
222.3486 -30.6055 16.8 -1 USNO-B1 19.51 17.64 18.47
222.3479 -30.6054 18.4 -1 USNO-B1 99.99 17.98 99.99
222.3549 -30.6073 16.1 -1 USNO-B1 99.99 19.84 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 96 in the list of sources is a candidate afterglow for 1046782_g641829537 with 3x3 stamp
ra=222.35244 (14:49:24.58) dec=-30.60471 (-30:36:16.9) +/- 1.1" mag=19.62+/-0.35
dist=283.2 REFID=110
*** The position of this source is inconsistent with the XRT position.
The position is 192.2 arc sec from the BAT position.
src: 96 distr. of nearby unmatched sources: 0 2 1 1 1
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
222.3529 -30.6022 9.1 -1 USNO-B1 19.43 18.56 18.95
222.3467 -30.6029 19.0 -1 USNO-B1 19.94 19.16 19.51
222.3485 -30.6046 12.2 -1 USNO-B1 17.76 15.88 16.72
222.3486 -30.6055 12.3 -1 USNO-B1 19.51 17.64 18.47
222.3479 -30.6054 14.2 -1 USNO-B1 99.99 17.98 99.99
222.3549 -30.6073 12.0 -1 USNO-B1 99.99 19.84 99.99
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 98 in the list of sources is a candidate afterglow for 1046782_g641829537 with 3x3 stamp
ra=222.35269 (14:49:24.65) dec=-30.60649 (-30:36:23.4) +/- 1.1" mag=19.60+/-0.35
dist=288.7 REFID=102
*** The position of this source is inconsistent with the XRT position.
The position is 197.7 arc sec from the BAT position.
src: 98 distr. of nearby unmatched sources: 0 1 1 1 1
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
222.3529 -30.6022 15.5 -1 USNO-B1 19.43 18.56 18.95
222.3485 -30.6046 14.7 -1 USNO-B1 17.76 15.88 16.72
222.3486 -30.6055 13.2 -1 USNO-B1 19.51 17.64 18.47
222.3479 -30.6054 15.3 -1 USNO-B1 99.99 17.98 99.99
222.3549 -30.6073 7.4 -1 USNO-B1 99.99 19.84 99.99
222.3498 -30.6098 14.9 -1 USNO-B1 15.94 13.72 14.71
*** 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:
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.
Region file: /Home/eud/uvot_tdrss/swift/uvot_gcn/src_1046782_XRT.reg
# Region file format: DS9 version 3.0
# find_uvot_ag.pl vrs. 2020-10-30 fem XRT
global font="helvetica 12 bold" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source=1
fk5;circle(222.39117,-30.53344,2.00") # color=red dash=0
point(222.39041,-30.53352) # point=diamond 10 color=red width=2
srclist paragraph message for exposure 1 of trigger 1046782
------ Start for Possible Stand-alone Circular ----
In response to GRB210504 (Swift/BAT trigger 1046782) at 13:54:53 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 217 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 14:49:34.01 = 222.39172
DEC(J2000) = -30:32:02.0 = -30.53388
with a 90%-confidence error radius of about 0.70 arc sec. This position is 2.3
arc sec. from the center of the XRT error circle. The estimated magnitude is
19.87 with a 1-sigma error of about 0.18. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.139.
------- notes for trigger 1046782 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 210505d04h54m54s500612usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1046782
-expid=641829537 -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/1046782/
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 641829537.93136 or about 2021:124:13:58:52 UT
Found 813 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 13% of the srclist region. Found 153 sources in
srclist catalog. Found 55 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 30 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 6 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.59 mag. Found 133 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 14% of the Genie image region. The
closest srclist source has ra= 222.3842 dec= -30.5315 mag=19.53 sep=22.69".
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?
641829537 217 WHITE srclist found no candidates.
641829537 217 WHITE 222.39172 -30.53388 19.87/20.6 2.3 image Yes
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -30.53388
GRB_ERROR: 0.70
GRB_RA: 222.39172
IMAGE_START_TIME: 13:58:52
MAGNITUDE: 19.87
MAG_ERROR: 0.18
MESSAGE_TYPE: ACK
SOURCE: XRT