srclist overlap message for exposure 1 of trigger 931484
uvot_overlap.pl vrs. 2010-12-20b fem started at 191025d18h21m40s355456usUT
The observation of trigger 931484 started 2019-10-25T18:17:50.2
Examining file 931484_g97_uvot_sky_srclist.fits
The exposure ID is 593720270
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (139.7774,1.3835) with a roll angle of 103.4
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 (139.7710,1.3840) with a radius of 3.000 arc min
This is 0.384 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
Could not find the location of an XRT error circle
srclist afterglow message for exposure 1 of trigger 931484
find_uvot_ag.pl vrs. 2017-02-17 fem started at 191025d18h21m41s356774usUT
Observation start time is 2019-10-25T18:17:50.2
Examining file 931484_g97_uvot_catalog_srclist.fits
The exposure ID is 593720270
The exposure is 150.000 sec.
The bin size is 2 pixels
The filter is WHITE
There are 30 detected source(s) for 931484_g97
Aspect correction adds 0.00189 degrees (0.452 sec of time = 6.78 arc sec) to RA
Aspect correction adds -0.00133 degrees (-4.80 arcsec) to Dec
Total aspect correction is 8.31 arcsec
Star catalogs centered at 139.7845 , 1.3952 with radius 5.65 arc min.
n_usno: 204 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
*** WARNING -- no XRT distances are available.
Mean distance difference (CAT_DELTA) for 28 matched entries is 0.592" for 931484_g97
Mean and std. dev of mag. difference (MAG_DELTA) are 1.908 and 0.491 for 931484_g97
Found 2 entries without IDs and 2 entries that are acceptable afterglow candidates for 931484_g97.
Acceptable entries have no ID, BAT distance < 200" or XRT distance < 10", 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=139.7710 (09:19:05.04) DEC= 1.3840 (+01:23:02.4)
XRT distances are as reported in catalog file.
-----------------
Entry 2 in the list of sources is a candidate afterglow for 931484_g97 with 5x5 stamp
ra=139.78775 (09:19:09.06) dec=1.36526 (+01:21:54.9) +/- 1.1" mag=20.00+/-0.35
dist=90.5 REFID=30
src: 2 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 13 in the list of sources is a candidate afterglow for 931484_g97 with 5x5 stamp
ra=139.76207 (09:19:02.90) dec=1.42158 (+01:25:17.7) +/- 1.1" mag=17.87+/-0.35
dist=139.0 REFID=14
src: 13 distr. of nearby unmatched sources: 0 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
139.7627 1.4211 2.8 -1 USNO-B1 14.86 13.77 14.25 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 18.66, BAT distances < 200",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
srclist paragraph message for exposure 1 of trigger 931484
------ Start for Possible Stand-alone Circular ----
In response to GRB191025 (Swift/BAT trigger 931484) at 18:16:12 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of nominal 150.000 seconds with the White
filter starting 73 seconds after the BAT trigger. No credible afterglow
candidate has been found in the initial data products. Data from the 2.7'x2.7'
sub-image are not available at this time. The 8'x8' region for the list of
sources generated on-board covers 100% of the BAT error circle. The list of
sources is typically complete to about 18 mag. No correction has been made for
the expected extinction corresponding to E(B-V) of 0.03.
------- notes for trigger 931484 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 191025d18h21m42s852556usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=931484
-expid=593720270 -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/931484/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
*** Warning -- no exposure found, using srclist assumed value.
No XRT position found for srclist. BAT position found.
UVOT exposure began at MET 593720270.18408 or about 2019:298:18:17:45 UT
Found 200 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 4% of the srclist region. Found 30 sources in
srclist catalog. Found 2 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
18.66 mag.
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?
593720270 73 WHITE 139.78775 1.36526 20.00/18.7 90.5 srclist Yes
593720270 73 ? image data are not available.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: white
GRB_DEC: 1.38400
GRB_ERROR: 200
GRB_RA: 139.77100
IMAGE_START_TIME: 18:17:45
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: BAT