image overlap message for exposure 3 of trigger 939079
uvot_overlap.pl vrs. 2010-12-20b fem started at 191123d18h36m09s439262usUT
The observation of trigger 939079 started 2019-11-23T10:53:37.6
Examining file ./939079_g892_uvot_sky_image.fits
The exposure ID is 596199217
The exposure time is 149.857 (seconds)
The filter is WHITE.
The uvot region is centered at (215.2732,22.8523) with a roll angle of 150.3
It is square with sides of 2.68 arc min. for an area of 7.17 sq arc min
The BAT error circle is centered at (215.2610,22.8420) with a radius of 3.000 arc min
This is 0.915 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 7.17 sq. arc min or 0.25 of the BAT error circle
The XRT error circle is centered at (215.2619,22.8599) with a radius of 0.028 arc min
This is 0.774 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
image afterglow message for exposure 3 of trigger 939079
find_uvot_ag.pl vrs. 2017-02-17 fem started at 191123d18h36m24s177606usUT
Observation start time is 2019-11-23T10:53:37.6
Examining file ./939079_g892_uvot_catalog_image.fits
The exposure ID is 596199217
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 1 detected source(s) for 939079_g892
Aspect correction adds -0.00166 degrees (-0.400 sec of time = -5.52 arc sec) to RA
Aspect correction adds -0.00028 degrees (-1.02 arcsec) to Dec
Total aspect correction is 5.62 arcsec
Star catalogs centered at 215.2576 , 22.8602 with radius 2.00 arc min.
n_usno: 24 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 0 matched entries is 0.000" for 939079_g892
Mean and std. dev of mag. difference (MAG_DELTA) are 0.000 and -1.000 for 939079_g892
Found 1 entries without IDs and 1 entries that are acceptable afterglow candidates for 939079_g892.
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=215.2610 (14:21:02.64) DEC=22.8420 (+22:50:31.2)
XRT distances are from RA=215.2619 (14:21:02.85) DEC=22.8599 (+22:51:35.7)
*** WARNING 100 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 939079_g892 with genie
ra=215.26198 (14:21:02.88) dec=22.85999 (+22:51:36.0) +/- 0.8" mag=19.11+/-0.16
dist=0.4 REFID=1 major=0.8 minor=0.7 flag=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
215.2633 22.8561 14.6 -1 USNO-B1 20.98 20.16 20.52
215.2635 22.8557 16.4 -1 USNO-B1 20.78 21.00 20.90
215.2653 22.8624 14.0 -1 USNO-B1 20.47 99.99 99.99
uvot_check_outside found 12 of 12 good pixels
##### This source remains a candidate #####
It has no entries within 3.5" or brighter than 12 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=215.26198 (14:21:02.88) dec=22.85999 (+22:51:36.0) +/- 0.8" mag=19.11+/-0.16 dist=0.4 REFID=1 flag=0
There are 90290.602 counts in the bkg source region of 6268.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 14.405 counts/pixel (5-sig UL in 4" is 19.90 mag) for 939079_g892
There are 1027.0341 counts in the src source region of 52.000000 pixels.
Rate in src region with 4 arcsec radius is 19.751 counts/pixel for 939079_g892
There are 17971.730 counts in the cand_src_bkg source region of 1253.0000 pixels.
Rate in cand_src_bkg region from 15 to 25 arcsec is 14.343 counts/pixel (5-sig UL in 4" is 19.90 mag) for 939079_g892
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 20.46, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 1 good candidate(s) found.
Region file: 939079_596199217_191123d18h36m24s177606usUT_bkg.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(215.2732,22.8523,45")
fk5;-circle(215.261980590913,22.8599883492919,6")
Region file: 939079_596199217_191123d18h36m24s177606usUT_cand_src.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(215.261980590913,22.8599883492919,4")
Region file: 939079_596199217_191123d18h36m24s177606usUT_cand_bkg.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(215.261980590913,22.8599883492919,25")
fk5;-circle(215.261980590913,22.8599883492919,15")
image paragraph message for exposure 3 of trigger 939079
------ Start for Possible Stand-alone Circular ----
In response to GRB191123 (Swift/BAT trigger 939079) at 10:38:44 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 869 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 14:21:02.88 = 215.26198
DEC(J2000) = +22:51:36.0 = 22.85999
with a 90%-confidence error radius of about 0.78 arc sec. This position is 0.4
arc sec. from the center of the XRT error circle. The estimated magnitude is
19.11 with a 1-sigma error of about 0.16. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.04.
------- notes for trigger 939079 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 191123d18h36m27s134763usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=939079
-expid=596199217 -meonly -msg_image
Results from standard processing of UVOT TDRSS data for this trigger should be
available at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/939079/
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 596199217.64604 or about 2019:327:10:53:32 UT
Found 568 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 5% of the srclist region. Found 52 sources in
srclist catalog. Found 18 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 1 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
20.46 mag. Found 20 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 3% 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?
596199217 868 WHITE 215.26200 22.85997 18.97/19.2 0.5 srclist Yes
596199217 868 WHITE 215.26198 22.85999 19.11/20.5 0.4 image Yes
List afterglow candidates for other finding charts.
596198426 77 WHITE 215.26201 22.86013 18.52/19.2 0.9 srclist Yes
596198426 77 WHITE 215.26196 22.86008 18.13/20.4 0.6 image Yes
596198638 289 U srclist found no candidates.
596198638 289 U image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 22.85999
GRB_ERROR: 0.78
GRB_RA: 215.26198
IMAGE_START_TIME: 10:53:32
MAGNITUDE: 19.11
MAG_ERROR: 0.16
MESSAGE_TYPE: ACK
SOURCE: XRT