srclist overlap message for exposure 1 of trigger 1015873
uvot_overlap.pl vrs. 2010-12-20b fem started at 210104d21h55m26s114256usUT
The observation of trigger 1015873 started 2021-01-04T11:28:36.2
Examining file ./1015873_g96_uvot_sky_srclist.fits
The exposure ID is 631452516
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (103.7076,64.6681) with a roll angle of 357.4
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 (103.7050,64.6610) with a radius of 3.000 arc min
This is 0.429 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 (103.7728,64.6761) with a radius of 0.023 arc min
This is 1.741 arc min from the center of the uvot region
The area of the XRT error circle is 0.002 sq. arc min
The UVOT/XRT overlap is 0.002 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 1015873
find_uvot_ag.pl vrs. 2020-10-30 fem started at 210104d21h55m30s373112usUT
Observation start time is 2021-01-04T11:28:36.2
Examining file ./1015873_g96_uvot_catalog_srclist.fits
The exposure ID is 631452516
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 90 detected source(s) for 1015873_g96
Aspect correction adds 0.00173 degrees (0.414 sec of time = 2.66 arc sec) to RA
Aspect correction adds 0.00061 degrees ( 2.19 arcsec) to Dec
Total aspect correction is 3.45 arcsec
Star catalogs centered at 103.7175 , 64.6795 with radius 5.95 arc min.
n_usno: 417 n_gsc: 0
*** WARNING -- bright star catalog has 5 entries brighter than 12 mag
The brightest has mag 10.8646
RA DEC Mag Color
bright star 0: 103.61437 (06:54:27.45) 64.65760 (+64:39:27.4) 11.99 USNO-V
bright star 1: 103.82948 (06:55:19.08) 64.71798 (+64:43:04.7) 11.42 USNO-V
bright star 2: 103.80077 (06:55:12.18) 64.62007 (+64:37:12.3) 10.96 USNO-V
bright star 3: 103.82969 (06:55:19.13) 64.73356 (+64:44:00.8) 11.44 USNO-V
bright star 4: 103.50235 (06:54:00.56) 64.65727 (+64:39:26.2) 10.86 USNO-V
Mean distance difference (CAT_DELTA) for 50 matched entries is 0.718" for 1015873_g96
Mean and std. dev of mag. difference (MAG_DELTA) are 1.575 and 0.716 for 1015873_g96
Found 40 entries without IDs and 8 entries that are acceptable afterglow candidates for 1015873_g96.
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.
32 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=103.7050 (06:54:49.20) DEC=64.6610 (+64:39:39.6)
XRT distances are from RA=103.7728 (06:55:05.47) DEC=64.6761 (+64:40:33.8)
*** WARNING 44 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1015873_g96 with 5x5 stamp
ra=103.77188 (06:55:05.25) dec=64.67611 (+64:40:34.0) +/- 1.1" mag=15.52+/-0.35
dist=1.4 REFID=6
src: 0 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
103.7782 64.6724 16.6 -1 USNO-B1 20.94 99.99 99.99
103.7792 64.6718 19.3 -1 USNO-B1 20.90 19.63 20.19
103.7846 64.6768 19.8 -1 USNO-B1 16.30 15.20 15.69
##### 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 1015873_g96 with 3x3 stamp
ra=103.78667 (06:55:08.80) dec=64.67960 (+64:40:46.6) +/- 1.1" mag=19.93+/-0.35
dist=24.9 REFID=76
*** The position of this source is inconsistent with the XRT position.
The position is 142.5 arc sec from the BAT position.
src: 3 distr. of nearby unmatched sources: 1 1 0 1 0
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
103.7810 64.6812 10.5 -1 USNO-B1 12.73 12.03 12.34 *
103.7846 64.6768 10.5 -1 USNO-B1 16.30 15.20 15.69
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 5 in the list of sources is a candidate afterglow for 1015873_g96 with 3x3 stamp
ra=103.78760 (06:55:09.02) dec=64.68044 (+64:40:49.6) +/- 1.1" mag=19.78+/-0.35
dist=27.7 REFID=75
*** The position of this source is inconsistent with the XRT position.
The position is 145.2 arc sec from the BAT position.
src: 5 distr. of nearby unmatched sources: 2 0 0 1 0
Found 3 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
103.7810 64.6812 10.6 -1 USNO-B1 12.73 12.03 12.34 *
103.7846 64.6768 13.8 -1 USNO-B1 16.30 15.20 15.69
103.7981 64.6824 17.6 -1 USNO-B1 22.04 20.61 21.24
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 6 in the list of sources is a candidate afterglow for 1015873_g96 with 3x3 stamp
ra=103.78902 (06:55:09.37) dec=64.68167 (+64:40:54.0) +/- 1.1" mag=20.18+/-0.35
dist=32.1 REFID=84
*** The position of this source is inconsistent with the XRT position.
The position is 149.3 arc sec from the BAT position.
src: 6 distr. of nearby unmatched sources: 1 1 1 0 0
Found 4 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
103.7810 64.6812 12.5 -1 USNO-B1 12.73 12.03 12.34 *
103.7846 64.6768 18.7 -1 USNO-B1 16.30 15.20 15.69
103.7981 64.6824 14.2 -1 USNO-B1 22.04 20.61 21.24
103.7987 64.6852 19.6 -1 USNO-B1 15.73 14.41 15.00
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 7 in the list of sources is a candidate afterglow for 1015873_g96 with 3x3 stamp
ra=103.78528 (06:55:08.47) dec=64.68457 (+64:41:04.5) +/- 1.1" mag=20.36+/-0.35
dist=36.2 REFID=87
*** The position of this source is inconsistent with the XRT position.
The position is 150.0 arc sec from the BAT position.
src: 7 distr. of nearby unmatched sources: 0 0 1 2 0
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
103.7753 64.6823 17.4 -1 USNO-B1 20.90 19.50 20.12
103.7810 64.6812 13.7 -1 USNO-B1 12.73 12.03 12.34 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 26 in the list of sources is a candidate afterglow for 1015873_g96 with 3x3 stamp
ra=103.67408 (06:54:41.78) dec=64.69003 (+64:41:24.1) +/- 1.1" mag=20.36+/-0.35
dist=160.0 REFID=88
*** The position of this source is inconsistent with the XRT position.
The position is 114.8 arc sec from the BAT position.
src: 26 distr. of nearby unmatched sources: 0 0 0 0 0
Found 3 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
103.6790 64.6871 13.1 -1 USNO-B1 15.59 14.72 15.11
103.6783 64.6921 10.0 -1 USNO-B1 19.22 19.11 19.16
103.6778 64.6921 9.4 -1 USNO-B1 19.31 19.02 19.15
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 31 in the list of sources is a candidate afterglow for 1015873_g96 with 3x3 stamp
ra=103.76086 (06:55:02.61) dec=64.62744 (+64:37:38.8) +/- 1.1" mag=20.00+/-0.35
dist=176.0 REFID=78
*** The position of this source is inconsistent with the XRT position.
The position is 148.4 arc sec from the BAT position.
src: 31 distr. of nearby unmatched sources: 0 0 0 0 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
103.7521 64.6314 19.7 -1 USNO-B1 20.61 19.68 20.09
103.7597 64.6302 10.2 -1 USNO-B1 20.75 19.29 19.94
103.7520 64.6284 14.1 -1 USNO-B1 12.78 11.87 12.27 *
103.7517 64.6258 15.4 -1 USNO-B1 20.80 19.29 19.96
103.7525 64.6258 14.1 -1 USNO-B1 21.07 18.51 19.65
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 1015873_g96 with 3x3 stamp
ra=103.75029 (06:55:00.07) dec=64.62317 (+64:37:23.4) +/- 1.1" mag=19.90+/-0.35
dist=193.6 REFID=82
*** The position of this source is inconsistent with the XRT position.
The position is 153.1 arc sec from the BAT position.
src: 37 distr. of nearby unmatched sources: 0 0 0 0 1
Found 3 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
103.7520 64.6284 19.0 -1 USNO-B1 12.78 11.87 12.27 *
103.7517 64.6258 9.7 -1 USNO-B1 20.80 19.29 19.96
103.7525 64.6258 10.2 -1 USNO-B1 21.07 18.51 19.65
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=103.77188 (06:55:05.25) dec=64.67611 (+64:40:34.0) +/- 1.1" mag=15.52+/-0.35 dist=1.4 REFID=6
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: 1 good candidate(s) found.
srclist paragraph message for exposure 1 of trigger 1015873
------ Start for Possible Stand-alone Circular ----
In response to GRB210104 (Swift/BAT trigger 1015873) at 11:26:59 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 70 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 06:55:05.25 = 103.77189
DEC(J2000) = +64:40:34.6 = 64.67627
with a 90%-confidence error radius of about 0.61 arc sec. This position is 1.6
arc sec. from the center of the XRT error circle. The estimated magnitude is
14.60 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.04.
------- notes for trigger 1015873 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 210104d21h55m34s652436usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1015873
-expid=631452516 -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/1015873/
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 631452516.2412 or about 2021:004:11:28:31 UT
Found 413 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 8% of the srclist region. Found 90 sources in
srclist catalog. Found 40 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 13 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 3 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.74 mag. Found 85 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 8% 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?
631452516 70 WHITE 103.77188 64.67611 15.52/19.2 1.4 srclist Yes
631452516 70 WHITE 103.77189 64.67627 14.60/20.7 1.6 image Yes
List afterglow candidates for other finding charts.
631452728 282 U 103.77182 64.67635 16.13/18.1 7.6 srclist Yes
631452728 282 U 103.77190 64.67621 15.19/20.5 7.1 image Yes
631453306 860 WHITE 103.77146 64.67600 17.82/19.2 6.2 srclist Yes
631453306 860 WHITE 103.77190 64.67629 16.47/20.8 7.4 image Yes
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 64.67627
GRB_ERROR: 0.61
GRB_RA: 103.77189
IMAGE_START_TIME: 11:28:31
MAGNITUDE: 14.60
MAG_ERROR: 0.14
MESSAGE_TYPE: ACK
SOURCE: XRT