srclist overlap message for exposure 1 of trigger 887579
uvot_overlap.pl vrs. 2010-12-20b fem started at 190204d13h38m28s095372usUT
The observation of trigger 887579 started 2019-02-04T05:47:46.6
Examining file ./887579_g105_uvot_sky_srclist.fits
The exposure ID is 570952066
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (351.5326,54.8784) with a roll angle of 213.4
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 (351.5340,54.8830) with a radius of 3.000 arc min
This is 0.278 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 (351.4782,54.8764) with a radius of 0.025 arc min
This is 1.883 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 887579
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190204d13h38m32s574842usUT
Observation start time is 2019-02-04T05:47:46.6
Examining file ./887579_g105_uvot_catalog_srclist.fits
The exposure ID is 570952066
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 887579_g105
*** WARNING -- the sources have filled the available telemetry buffer (190).
srclist_overlap returned: bat_overlap 1.000
srclist_overlap returned: xrt_overlap 1.000
Dimmest detected source in 887579_g105 has mag 19.03
Aspect correction adds -0.00115 degrees (-0.277 sec of time = -2.39 arc sec) to RA
Aspect correction adds -0.00033 degrees (-1.19 arcsec) to Dec
Total aspect correction is 2.67 arcsec
Star catalogs centered at 351.5261 , 54.8782 with radius 6.42 arc min.
n_usno: 1869 n_gsc: 0
*** WARNING -- bright star catalog has 4 entries brighter than 12 mag
The brightest has mag 11.1276
RA DEC Mag Color
bright star 0: 351.47225 (23:25:53.34) 54.88890 (+54:53:20.0) 11.71 USNO-R
bright star 1: 351.41522 (23:25:39.65) 54.83517 (+54:50:06.6) 11.13 USNO-V
bright star 2: 351.46534 (23:25:51.68) 54.79204 (+54:47:31.3) 11.17 USNO-V
bright star 3: 351.69383 (23:26:46.52) 54.86939 (+54:52:09.8) 11.77 USNO-V
Mean distance difference (CAT_DELTA) for 196 matched entries is 0.728" for 887579_g105
Mean and std. dev of mag. difference (MAG_DELTA) are 1.507 and 0.610 for 887579_g105
Found 7 entries without IDs and 6 entries that are acceptable afterglow candidates for 887579_g105.
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.
1 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=351.5340 (23:26:08.16) DEC=54.8830 (+54:52:58.8)
XRT distances are from RA=351.4782 (23:25:54.77) DEC=54.8764 (+54:52:34.9)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 887579_g105 with 3x3 stamp
ra=351.47704 (23:25:54.49) dec=54.87647 (+54:52:35.3) +/- 1.1" mag=17.71+/-0.35
dist=2.5 REFID=36
src: 0 distr. of nearby unmatched sources: 0 0 0 0 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
351.4800 54.8771 6.6 -1 USNO-B1 19.90 18.66 19.21
351.4788 54.8718 17.2 -1 USNO-B1 18.76 17.98 18.33
351.4785 54.8713 18.8 -1 USNO-B1 99.99 18.60 99.99
351.4756 54.8774 4.4 -1 USNO-B1 17.64 16.75 17.15
351.4709 54.8758 12.9 -1 USNO-B1 20.39 18.55 19.37
##### This source remains a candidate #####
It has no entries within 4" or brighter than 13 mag
-----------------
Entry 53 in the list of sources is a candidate afterglow for 887579_g105 with 3x3 stamp
ra=351.46078 (23:25:50.59) dec=54.91018 (+54:54:36.7) +/- 1.1" mag=18.18+/-0.35
dist=127.0 REFID=95
*** The position of this source is inconsistent with the XRT position.
The position is 180.4 arc sec from the BAT position.
src: 53 distr. of nearby unmatched sources: 0 0 0 0 0
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
351.4671 54.9126 15.8 -1 USNO-B1 99.99 19.88 99.99
351.4615 54.9106 2.1 -1 USNO-B1 16.63 15.65 16.09 *
351.4551 54.9074 15.5 -1 USNO-B1 20.33 18.70 19.42
351.4606 54.9138 12.9 -1 USNO-B1 19.30 18.04 18.60
351.4599 54.9136 12.4 -1 USNO-B1 19.55 17.71 18.53
351.4606 54.9148 16.5 -1 USNO-B1 18.82 17.00 17.81
351.4577 54.9130 12.0 -1 USNO-B1 16.51 15.19 15.77
351.4519 54.9101 18.4 -1 USNO-B1 17.04 15.97 16.44
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 88 in the list of sources is a candidate afterglow for 887579_g105 with 1x1 stamp
ra=351.53873 (23:26:09.30) dec=54.84702 (+54:50:49.3) +/- 1.1" mag=17.19+/-0.35
dist=164.0 REFID=145
*** The position of this source is inconsistent with the XRT position.
The position is 129.9 arc sec from the BAT position.
src: 88 distr. of nearby unmatched sources: 2 1 0 0 0
Found 6 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
351.5432 54.8511 17.4 -1 USNO-B1 19.54 17.82 18.59
351.5397 54.8502 11.7 -1 USNO-B1 18.57 17.48 17.97
351.5341 54.8469 9.6 -1 USNO-B1 19.46 18.46 18.90
351.5385 54.8459 4.0 -1 USNO-B1 14.29 12.96 13.56 *
351.5422 54.8459 8.2 -1 USNO-B1 16.37 15.46 15.86
351.5427 54.8458 9.3 -1 USNO-B1 16.92 15.66 16.22
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 94 in the list of sources is a candidate afterglow for 887579_g105 with 1x1 stamp
ra=351.53898 (23:26:09.36) dec=54.84645 (+54:50:47.2) +/- 1.1" mag=16.58+/-0.35
dist=165.7 REFID=132
*** The position of this source is inconsistent with the XRT position.
The position is 132.0 arc sec from the BAT position.
src: 94 distr. of nearby unmatched sources: 2 1 0 0 0
Found 6 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
351.5432 54.8511 18.9 -1 USNO-B1 19.54 17.82 18.59
351.5397 54.8502 13.6 -1 USNO-B1 18.57 17.48 17.97
351.5341 54.8469 10.3 -1 USNO-B1 19.46 18.46 18.90
351.5385 54.8459 2.2 -1 USNO-B1 14.29 12.96 13.56 *
351.5422 54.8459 6.9 -1 USNO-B1 16.37 15.46 15.86
351.5427 54.8458 8.0 -1 USNO-B1 16.92 15.66 16.22
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 98 in the list of sources is a candidate afterglow for 887579_g105 with 3x3 stamp
ra=351.53740 (23:26:08.98) dec=54.84498 (+54:50:41.9) +/- 1.1" mag=17.33+/-0.35
dist=166.8 REFID=49
*** The position of this source is inconsistent with the XRT position.
The position is 137.0 arc sec from the BAT position.
src: 98 distr. of nearby unmatched sources: 1 2 0 0 0
Found 7 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
351.5397 54.8502 19.5 -1 USNO-B1 18.57 17.48 17.97
351.5341 54.8469 9.8 -1 USNO-B1 19.46 18.46 18.90
351.5291 54.8453 17.2 -1 USNO-B1 17.88 16.65 17.20
351.5385 54.8459 4.0 -1 USNO-B1 14.29 12.96 13.56 *
351.5422 54.8459 10.4 -1 USNO-B1 16.37 15.46 15.86
351.5427 54.8458 11.3 -1 USNO-B1 16.92 15.66 16.22
351.5303 54.8414 19.6 -1 USNO-B1 17.13 16.06 16.54
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 181 in the list of sources is a candidate afterglow for 887579_g105 with 1x1 stamp
ra=351.62511 (23:26:30.03) dec=54.86910 (+54:52:08.8) +/- 1.1" mag=17.82+/-0.35
dist=305.4 REFID=147
*** The position of this source is inconsistent with the XRT position.
The position is 195.3 arc sec from the BAT position.
src: 181 distr. of nearby unmatched sources: 0 0 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
351.6182 54.8674 15.6 -1 USNO-B1 17.58 16.74 17.11
351.6197 54.8667 14.0 -1 USNO-B1 19.86 18.44 19.07
351.6198 54.8665 14.4 -1 USNO-B1 99.99 18.48 99.99
351.6212 54.8693 8.1 -1 USNO-B1 19.17 17.99 18.51
351.6240 54.8686 2.8 -1 USNO-B1 15.71 14.69 15.14 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
Found 2 entries in star catalog(s) within 10" of the XRT position.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
351.4800 54.8771 4.7 -1 USNO-B1 19.90 18.66 19.21
351.4756 54.8774 6.6 -1 USNO-B1 17.64 16.75 17.15
The closest star is 4.66" away.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=351.47704 (23:25:54.49) dec=54.87647 (+54:52:35.3) +/- 1.1" mag=17.71+/-0.35 dist=2.5 REFID=36
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 887579
1 source(s) near the XRT position were rejected as afterglow candidate(s). See
notes for details.
------ Start for Possible Stand-alone Circular ----
In response to GRB190204 (Swift/BAT trigger 887579) at 05:46:00 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 83 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 23:25:54.49 = 351.47704
DEC(J2000) = +54:52:35.3 = 54.87647
with a 90%-confidence error radius of about 1.10 arc sec. This position is 2.5
arc sec. from the center of the XRT error circle. The estimated magnitude is
17.71. No correction has been made for the expected extinction corresponding to
E(B-V) of 0.38.
------- notes for trigger 887579 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 190204d13h38m40s154239usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=887579
-expid=570952066 -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/887579/
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 570952066.62586 or about 2019:035:05:47:41 UT
Found 1865 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 31% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 7 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 46 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 0 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.49 mag. Found 316 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 32% of the Genie image region.
Found 1 Genie source(s) within 10.0" of the XRT position. The brightest such
source has ra= 351.4770 dec= 54.8766 mag=16.23 sep=2.65". The closest Genie
source has ra= 351.4770 dec= 54.8766 mag=16.23 sep=2.65".
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?
570952066 82 WHITE 351.47704 54.87647 17.71/19.2 2.5 srclist Yes
570952066 82 WHITE image found no candidates.
List afterglow candidates for other finding charts.
570952278 294 U 351.47772 54.87631 18.21/18.1 1.1 srclist Yes
570952278 294 U 351.47742 54.87637 17.76/20.3 0.8 image Yes
570952857 873 WHITE srclist found no candidates.
570952857 873 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: 54.87647
GRB_ERROR: 1.10
GRB_RA: 351.47704
IMAGE_START_TIME: 05:47:41
MAGNITUDE: 17.71
MAG_ERROR: 0.4
MESSAGE_TYPE: ACK
SOURCE: XRT