srclist overlap message for exposure 1 of trigger 1091527
uvot_overlap.pl vrs. 2010-12-20b fem started at 220101d08h36m29s607732usUT
The observation of trigger 1091527 started 2022-01-01T05:12:09.8
Examining file ./1091527_g117_uvot_sky_srclist.fits
The exposure ID is 662706729
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (1.3737,31.7458) with a roll angle of 245.2
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 (1.3800,31.7530) with a radius of 3.000 arc min
This is 0.539 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 (1.3538,31.7689) with a radius of 0.035 arc min
This is 1.718 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 1091527
find_uvot_ag.pl vrs. 2020-10-30 fem started at 220101d08h36m31s474474usUT
Observation start time is 2022-01-01T05:12:09.8
Examining file ./1091527_g117_uvot_catalog_srclist.fits
The exposure ID is 662706729
The exposure is 149.691 sec.
The bin size is 2 pixels
The filter is WHITE
There are 51 detected source(s) for 1091527_g117
Aspect correction adds -0.00068 degrees (-0.164 sec of time = -2.10 arc sec) to RA
Aspect correction adds -0.00109 degrees (-3.93 arcsec) to Dec
Total aspect correction is 4.45 arcsec
Star catalogs centered at 1.3698 , 31.7536 with radius 6.22 arc min.
n_usno: 390 n_gsc: 0
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 10.11624
RA DEC Mag Color
bright star 0: 1.34690 (00:05:23.26) 31.83476 (+31:50:05.2) 10.12 USNO-V
Mean distance difference (CAT_DELTA) for 38 matched entries is 0.908" for 1091527_g117
Mean and std. dev of mag. difference (MAG_DELTA) are 2.047 and 0.859 for 1091527_g117
Found 14 entries without IDs and 7 entries that are acceptable afterglow candidates for 1091527_g117.
Acceptable entries have no ID, XRT distances < 5.25", 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= 1.3800 (00:05:31.20) DEC=31.7530 (+31:45:10.8)
XRT distances are from RA= 1.3538 (00:05:24.90) DEC=31.7689 (+31:46:08.0)
*** WARNING 27 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1091527_g117 with 3x3 stamp
ra=1.35435 (00:05:25.04) dec=31.76941 (+31:46:09.9) +/- 1.1" mag=19.62+/-0.35
dist=2.6 REFID=43
src: 0 distr. of nearby unmatched sources: 2 0 0 0 0
Found 1 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
1.3559 31.7742 17.8 -1 USNO-B1 21.24 20.17 20.65
##### This source remains a candidate #####
It has no entries within 4" or brighter than 13 mag
-----------------
Entry 1 in the list of sources is a candidate afterglow for 1091527_g117 with 5x5 stamp
ra=1.35342 (00:05:24.82) dec=31.76994 (+31:46:11.8) +/- 1.1" mag=19.44+/-0.35
dist=3.9 REFID=36
src: 1 distr. of nearby unmatched sources: 2 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
1.3559 31.7742 17.0 -1 USNO-B1 21.24 20.17 20.65
##### This source remains a candidate #####
It has no entries within 4" or brighter than 13 mag
-----------------
Entry 2 in the list of sources is a candidate afterglow for 1091527_g117 with 5x5 stamp
ra=1.35335 (00:05:24.80) dec=31.76917 (+31:46:09.0) +/- 1.1" mag=16.02+/-0.35
dist=1.6 REFID=3
src: 2 distr. of nearby unmatched sources: 2 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
1.3559 31.7742 19.6 -1 USNO-B1 21.24 20.17 20.65
##### 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 1091527_g117 with 5x5 stamp
ra=1.34299 (00:05:22.32) dec=31.74897 (+31:44:56.3) +/- 1.1" mag=19.07+/-0.35
dist=78.9 REFID=33
*** The position of this source is inconsistent with the XRT position.
The position is 114.2 arc sec from the BAT position.
src: 5 distr. of nearby unmatched sources: 1 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
1.3420 31.7488 3.0 -1 USNO-B1 15.52 13.84 14.59 *
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 1091527_g117 with 5x5 stamp
ra=1.34144 (00:05:21.95) dec=31.74874 (+31:44:55.5) +/- 1.1" mag=17.73+/-0.35
dist=81.7 REFID=13
*** The position of this source is inconsistent with the XRT position.
The position is 119.0 arc sec from the BAT position.
src: 7 srclist_match has ID
src: 7 distr. of nearby unmatched sources: 2 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
1.3420 31.7488 1.8 -1 USNO-B1 15.52 13.84 14.59 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 11 in the list of sources is a candidate afterglow for 1091527_g117 with 3x3 stamp
ra=1.31787 (00:05:16.29) dec=31.76507 (+31:45:54.3) +/- 1.1" mag=19.62+/-0.35
dist=110.7 REFID=46
*** The position of this source is inconsistent with the XRT position.
The position is 195.1 arc sec from the BAT position.
src: 11 distr. of nearby unmatched sources: 0 0 0 0 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
1.3178 31.7641 3.5 -1 USNO-B1 15.59 14.30 14.87 *
1.3146 31.7669 12.1 -1 USNO-B1 19.15 17.20 18.07
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 39 in the list of sources is a candidate afterglow for 1091527_g117 with 3x3 stamp
ra=1.39084 (00:05:33.80) dec=31.70367 (+31:42:13.2) +/- 1.1" mag=19.81+/-0.35
dist=260.8 REFID=44
*** The position of this source is inconsistent with the XRT position.
The position is 180.7 arc sec from the BAT position.
src: 39 distr. of nearby unmatched sources: 0 0 0 0 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
1.3911 31.7048 4.3 -1 USNO-B1 19.97 18.77 19.30
1.3906 31.7027 3.7 -1 USNO-B1 14.32 13.04 13.61 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
separation of 0 and 1 is 3.4 arc sec
Eliminate candidate 0 -- it is only 3.4 arc sec from candidate 1 and dimmer
separation of 1 and 2 is 2.8 arc sec
Eliminate candidate 1 -- it is only 2.8 arc sec from candidate 2 and dimmer
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=1.35435 (00:05:25.04) dec=31.76941 (+31:46:09.9) +/- 1.1" mag=19.62+/-0.35 dist=2.6 REFID=43
Unmatched source ra=1.35342 (00:05:24.82) dec=31.76994 (+31:46:11.8) +/- 1.1" mag=19.44+/-0.35 dist=3.9 REFID=36
Unmatched source ra=1.35335 (00:05:24.80) dec=31.76917 (+31:46:09.0) +/- 1.1" mag=16.02+/-0.35 dist=1.6 REFID=3
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 19.22, XRT distances < 5.25",
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 1091527
------ Start for Possible Stand-alone Circular ----
In response to GRB220101 (Swift/BAT trigger 1091527) at 05:10:11 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 89 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 00:05:24.82 = 1.35340
DEC(J2000) = +31:46:08.5 = 31.76903
with a 90%-confidence error radius of about 0.61 arc sec. This position is 1.2
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 0.055.
------- notes for trigger 1091527 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 220101d08h36m36s928994usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1091527
-expid=662706729 -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/1091527/
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 662706729.84378 or about 2022:001:05:12:04 UT
Found 386 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 6% of the srclist region. Found 51 sources in
srclist catalog. Found 14 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 5 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
20.68 mag. Found 58 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 7% 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?
662706729 89 WHITE 1.35335 31.76917 16.02/19.2 1.6 srclist Yes
662706729 89 WHITE 1.35340 31.76903 14.60/20.7 1.2 image Yes
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 31.76903
GRB_ERROR: 0.61
GRB_RA: 1.35340
IMAGE_START_TIME: 05:12:04
MAGNITUDE: 14.60
MAG_ERROR: 0.14
MESSAGE_TYPE: ACK
SOURCE: XRT