srclist overlap message for exposure 1 of trigger 882252
uvot_overlap.pl vrs. 2010-12-20b fem started at 190106d15h27m08s935748usUT
The observation of trigger 882252 started 2019-01-06T13:36:37.0
Examining file ./882252_g112_uvot_sky_srclist.fits
The exposure ID is 568474597
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (29.8803,23.8510) with a roll angle of 253.4
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 (29.8860,23.8570) with a radius of 3.000 arc min
This is 0.476 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 (29.8800,23.8454) with a radius of 0.030 arc min
This is 0.336 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 882252
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190106d15h27m14s957323usUT
Observation start time is 2019-01-06T13:36:37.0
Examining file ./882252_g112_uvot_catalog_srclist.fits
The exposure ID is 568474597
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 29 detected source(s) for 882252_g112
Aspect correction adds 0.00031 degrees (0.075 sec of time = 1.02 arc sec) to RA
Aspect correction adds 0.00011 degrees ( 0.38 arcsec) to Dec
Total aspect correction is 1.09 arcsec
Star catalogs centered at 29.8853 , 23.8491 with radius 6.14 arc min.
n_usno: 204 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 20 matched entries is 0.532" for 882252_g112
Mean and std. dev of mag. difference (MAG_DELTA) are 1.806 and 0.401 for 882252_g112
Found 9 entries without IDs and 4 entries that are acceptable afterglow candidates for 882252_g112.
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.
Magnitude criteria will be applied later.
BAT distances are from RA=29.8860 (01:59:32.64) DEC=23.8570 (+23:51:25.2)
XRT distances are from RA=29.8800 (01:59:31.21) DEC=23.8454 (+23:50:43.6)
*** WARNING 31 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 882252_g112 with 5x5 stamp
ra=29.87984 (01:59:31.16) dec=23.84555 (+23:50:44.0) +/- 1.1" mag=17.09+/-0.35
dist=0.8 REFID=6
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 882252_g112 with 5x5 stamp
ra=29.86463 (01:59:27.51) dec=23.85847 (+23:51:30.5) +/- 1.1" mag=19.47+/-0.35
dist=69.1 REFID=25
*** The position of this source is inconsistent with the XRT position.
The position is 70.5 arc sec from the BAT position.
src: 5 distr. of nearby unmatched sources: 0 1 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
29.8660 23.8557 11.0 -1 USNO-B1 19.65 18.89 19.23
29.8656 23.8560 9.3 -1 USNO-B1 18.76 18.05 18.37
29.8645 23.8576 3.1 -1 USNO-B1 13.90 12.77 13.27 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 9 in the list of sources is a candidate afterglow for 882252_g112 with 5x5 stamp
ra=29.89834 (01:59:35.60) dec=23.81537 (+23:48:55.3) +/- 1.1" mag=18.98+/-0.35
dist=123.9 REFID=20
*** The position of this source is inconsistent with the XRT position.
The position is 155.3 arc sec from the BAT position.
src: 9 distr. of nearby unmatched sources: 0 1 0 0 0
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
29.8984 23.8182 10.1 -1 USNO-B1 99.99 19.46 99.99
29.8980 23.8175 7.8 -1 USNO-B1 20.93 18.32 19.48
29.9000 23.8168 7.5 -1 USNO-B1 99.99 19.15 99.99
29.8982 23.8146 2.7 -1 USNO-B1 13.12 11.49 12.22 *
29.8950 23.8127 14.7 -1 USNO-B1 20.68 19.13 19.82
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 17 in the list of sources is a candidate afterglow for 882252_g112 with 5x5 stamp
ra=29.84081 (01:59:21.79) dec=23.89018 (+23:53:24.6) +/- 1.1" mag=20.00+/-0.35
dist=206.4 REFID=27
*** The position of this source is inconsistent with the XRT position.
The position is 190.8 arc sec from the BAT position.
src: 17 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
29.8439 23.8899 10.2 -1 USNO-B1 20.63 20.04 20.30
29.8408 23.8893 3.2 -1 USNO-B1 14.75 13.09 13.83 *
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=29.87984 (01:59:31.16) dec=23.84555 (+23:50:44.0) +/- 1.1" mag=17.09+/-0.35 dist=0.8 REFID=6
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",
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 882252
------ Start for Possible Stand-alone Circular ----
In response to GRB190106 (Swift/BAT trigger 882252) at 13:34:44 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 90 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 01:59:31.18 = 29.87993
DEC(J2000) = +23:50:44.0 = 23.84555
with a 90%-confidence error radius of about 0.61 arc sec. This position is 0.5
arc sec. from the center of the XRT error circle. The estimated magnitude is
16.45 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.09.
------- notes for trigger 882252 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 190106d15h27m21s134836usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=882252
-expid=568474597 -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/882252/
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 568474597.00254 or about 2019:006:13:36:32 UT
Found 200 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 3% of the srclist region. Found 29 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
19.22 mag.
Found 9 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 2 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.58 mag. Found 39 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?
568474597 90 WHITE 29.87984 23.84555 17.09/19.2 0.8 srclist Yes
568474597 90 WHITE 29.87993 23.84555 16.45/20.6 0.5 image Yes
List afterglow candidates for other finding charts.
568474810 303 U 29.87965 23.84545 16.87/18.1 3.1 srclist Yes
568474810 303 U 29.87991 23.84552 15.87/20.4 3.1 image Yes
568475365 858 WHITE 29.88001 23.84578 *17.8/19.2 3.8 srclist Yes
568475365 858 WHITE 29.87991 23.84546 16.97/19.9 2.9 image Yes
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 23.84555
GRB_ERROR: 0.61
GRB_RA: 29.87993
IMAGE_START_TIME: 13:36:32
MAGNITUDE: 16.45
MAG_ERROR: 0.14
MESSAGE_TYPE: ACK
SOURCE: XRT