image overlap message for exposure 1 of trigger 819490
uvot_overlap.pl vrs. 2010-12-20b fem started at 180329d19h47m05s852514usUT
The observation of trigger 819490 started 2018-03-29T14:10:36.5
Examining file ./819490_g132_uvot_sky_image.fits
The exposure ID is 544025436
The exposure time is 149.857 (seconds)
The filter is WHITE.
The uvot region is centered at (82.8954,-23.6911) with a roll angle of 279.5
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 (82.9160,-23.7080) with a radius of 3.000 arc min
This is 1.519 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 7.10 sq. arc min or 0.25 of the BAT error circle
The XRT error circle is centered at (82.9038,-23.6909) with a radius of 0.028 arc min
This is 0.457 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 1 of trigger 819490
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180329d19h47m09s705057usUT
Observation start time is 2018-03-29T14:10:36.5
Examining file ./819490_g132_uvot_catalog_image.fits
The exposure ID is 544025436
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 14 detected source(s) for 819490_g132
Aspect correction adds 0.00060 degrees (0.144 sec of time = 1.98 arc sec) to RA
Aspect correction adds -0.00019 degrees (-0.67 arcsec) to Dec
Total aspect correction is 2.09 arcsec
Star catalogs centered at 82.8912 , -23.6831 with radius 2.96 arc min.
n_usno: 94 n_gsc: 89
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.92876
RA DEC Mag Color
bright star 0: 82.89076 (05:31:33.78) -23.68728 (-23:41:14.2) 11.93 USNO-V
Mean distance difference (CAT_DELTA) for 6 matched entries is 0.249" for 819490_g132
Mean and std. dev of mag. difference (MAG_DELTA) are 0.660 and 0.475 for 819490_g132
Found 8 entries without IDs and 3 entries that are acceptable afterglow candidates for 819490_g132.
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.
5 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=82.9160 (05:31:39.84) DEC=-23.7080 (-23:42:28.8)
XRT distances are from RA=82.9038 (05:31:36.90) DEC=-23.6909 (-23:41:27.1)
*** WARNING 57 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 819490_g132 with genie
ra=82.90376 (05:31:36.90) dec=-23.69052 (-23:41:25.9) +/- 0.6" mag=17.65+/-0.14
dist=1.2 REFID=11 major=1.0 minor=1.0 flag=0
Found 5 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
82.9010 -23.6881 12.4 -1 USNO-B1 21.01 19.20 20.00
82.9014 -23.6942 15.4 -1 USNO-B1 21.36 19.74 20.46
82.8986 -23.6883 18.8 -1 GSC2.3 99.99 22.52 99.99
82.8986 -23.6889 17.9 -1 GSC2.3 99.99 22.52 99.99
82.9052 -23.6942 14.1 -1 GSC2.3 99.99 22.35 99.99
uvot_check_outside found 10 of 10 good pixels
##### This source remains a candidate #####
It has no entries within 3.5" or brighter than 12 mag
-----------------
Entry 4 in the list of sources is a candidate afterglow for 819490_g132 with genie
ra=82.89456 (05:31:34.69) dec=-23.69082 (-23:41:27.0) +/- 0.6" mag=16.46+/-0.14
dist=30.3 REFID=8 major=9.5 minor=6.8 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 93.9 arc sec from the BAT position.
Found 12 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
82.8908 -23.6873 17.9 -1 USNO-B1 12.79 11.25 11.93 *
82.8954 -23.6871 13.7 -1 USNO-B1 20.42 20.22 20.31
82.8907 -23.6912 12.7 -1 USNO-B1 99.99 19.34 99.99
82.8932 -23.6933 9.9 -1 USNO-B1 19.91 18.02 18.86
82.8948 -23.6941 11.7 -1 USNO-B1 20.77 17.53 18.97
82.8986 -23.6943 18.2 -1 USNO-B1 13.39 13.21 13.29
82.8908 -23.6873 17.9 -1 GSC2.3 99.99 99.99 11.99 *
82.8986 -23.6883 16.1 -1 GSC2.3 99.99 22.52 99.99
82.8986 -23.6889 15.1 -1 GSC2.3 99.99 22.52 99.99
82.8908 -23.6931 15.0 -1 GSC2.3 99.99 21.50 99.99
82.8932 -23.6933 9.9 -1 GSC2.3 18.27 19.12 99.99
82.8986 -23.6943 18.4 -1 GSC2.3 12.44 13.04 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 3.5" or brighter than 12 mag
-----------------
Entry 5 in the list of sources is a candidate afterglow for 819490_g132 with genie
ra=82.89287 (05:31:34.29) dec=-23.69270 (-23:41:33.7) +/- 0.6" mag=18.64+/-0.15
dist=36.5 REFID=12 major=5.8 minor=4.8 flag=1 (neighbor)
*** The position of this source is inconsistent with the XRT position.
The position is 94.0 arc sec from the BAT position.
Found 8 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
82.8907 -23.6912 8.9 -1 USNO-B1 99.99 19.34 99.99
82.8932 -23.6933 2.4 -1 USNO-B1 19.91 18.02 18.86 *
82.8948 -23.6941 8.1 -1 USNO-B1 20.77 17.53 18.97
82.8986 -23.6943 19.8 -1 USNO-B1 13.39 13.21 13.29
82.8908 -23.6931 7.1 -1 GSC2.3 99.99 21.50 99.99
82.8932 -23.6933 2.4 -1 GSC2.3 18.27 19.12 99.99 *
82.8886 -23.6939 14.8 -1 GSC2.3 99.99 22.53 99.99
82.8986 -23.6943 19.8 -1 GSC2.3 12.44 13.04 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are 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=82.90376 (05:31:36.90) dec=-23.69052 (-23:41:25.9) +/- 0.6" mag=17.65+/-0.14 dist=1.2 REFID=11 flag=0
There are 45361.027 counts in the bkg source region of 5105.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 8.886 counts/pixel (5-sig UL in 4" is 20.16 mag) for 819490_g132
There are 1507.4534 counts in the src source region of 48.000000 pixels.
Rate in src region with 4 arcsec radius is 31.405 counts/pixel for 819490_g132
There are 9698.5986 counts in the cand_src_bkg source region of 1102.0000 pixels.
Rate in cand_src_bkg region from 15 to 25 arcsec is 8.801 counts/pixel (5-sig UL in 4" is 20.17 mag) for 819490_g132
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 20.72, 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: 819490_544025436_180329d19h47m09s705057usUT_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(82.8954,-23.6911,45")
fk5;-circle(82.9037580064889,-23.6905176585479,6")
fk5;-circle(82.901419970026,-23.6836914215906,6")
fk5;-circle(82.8986763760316,-23.6943621938977,6")
fk5;-circle(82.8956664078625,-23.6868898957,6")
fk5;-circle(82.8945623101595,-23.6908234367704,6")
fk5;-circle(82.8928745995357,-23.6927033031924,6")
fk5;-circle(82.8934172994786,-23.683789457737,6")
fk5;-circle(82.8907725681379,-23.6871928669229,6")
fk5;-circle(82.8901819758015,-23.6831180793667,6")
fk5;-circle(82.887639634629,-23.6901989853903,6")
fk5;-circle(82.8871052290681,-23.6850152626692,6")
Region file: 819490_544025436_180329d19h47m09s705057usUT_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(82.9037580064889,-23.6905176585479,4")
Region file: 819490_544025436_180329d19h47m09s705057usUT_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(82.9037580064889,-23.6905176585479,25")
fk5;-circle(82.9037580064889,-23.6905176585479,15")
fk5;-circle(82.901419970026,-23.6836914215906,6")
fk5;-circle(82.8986763760316,-23.6943621938977,6")
fk5;-circle(82.8956664078625,-23.6868898957,6")
fk5;-circle(82.8945623101595,-23.6908234367704,6")
image paragraph message for exposure 1 of trigger 819490
------ Start for Possible Stand-alone Circular ----
In response to GRB180329 (Swift/BAT trigger 819490) at 14:08:23 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 111 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 05:31:36.90 = 82.90376
DEC(J2000) = -23:41:25.9 = -23.69052
with a 90%-confidence error radius of about 0.62 arc sec. This position is 1.2
arc sec. from the center of the XRT error circle. The estimated magnitude is
17.65 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 819490 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180329d19h47m13s384069usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=819490
-expid=544025436 -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/819490/
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 544025436.51572 or about 2018:088:14:10:31 UT
Found 371 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 7% of the srclist region. Found 80 sources in
srclist catalog. Found 21 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 14 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 8 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.72 mag. Found 90 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?
544025436 111 WHITE 82.90396 -23.69059 18.24/19.2 1.2 srclist Yes
544025436 111 WHITE 82.90376 -23.69052 17.65/20.7 1.2 image Yes
List afterglow candidates for other finding charts.
544025594 269 U 82.90370 -23.69066 17.07/18.1 2.6 srclist Yes
544025594 269 U 82.90380 -23.69052 16.35/20.5 3.0 image Yes
544026195 870 WHITE 82.90380 -23.69053 17.56/19.2 3.0 srclist Yes
544026195 870 WHITE 82.90388 -23.69049 16.95/20.7 3.1 image Yes
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -23.69052
GRB_ERROR: 0.62
GRB_RA: 82.90376
IMAGE_START_TIME: 14:10:31
MAGNITUDE: 17.65
MAG_ERROR: 0.14
MESSAGE_TYPE: ACK
SOURCE: XRT