image overlap message for exposure 2 of trigger 1259578
uvot_overlap.pl vrs. 2010-12-20b fem started at 241010d16h26m01s839999usUT
The observation of trigger 1259578 started 2024-10-10T10:11:06.0
Examining file ./1259578_g350_uvot_sky_image.fits
The exposure ID is 750247865
The exposure time is 229.676 (seconds)
The filter is U.
The uvot region is centered at (153.3715,11.5420) with a roll angle of 111.3
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 (153.3650,11.5440) with a radius of 3.000 arc min
This is 0.398 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 (153.3813,11.5344) with a radius of 0.035 arc min
This is 0.737 arc min from the center of the uvot region
The area of the XRT error circle is 0.004 sq. arc min
The UVOT/XRT overlap is 0.004 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 2 of trigger 1259578
find_uvot_ag.pl vrs. 2023-04-25a fem started at 241010d16h26m15s850336usUT
Observation start time is 2024-10-10T10:11:06.0
Examining file ./1259578_g350_uvot_catalog_image.fits
The exposure ID is 750247865
The exposure is 229.676 sec.
The bin size is 2 pixels
The filter is U
There are 2 detected source(s) for 1259578_g350
Aspect correction adds 0.00013 degrees (0.030 sec of time = 0.44 arc sec) to RA
Aspect correction adds -0.00122 degrees (-4.40 arcsec) to Dec
Total aspect correction is 4.42 arcsec
Star catalogs centered at 153.3735 , 11.5323 with radius 2.00 arc min.
n_usno: 56 n_gsc: 33
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 0 matched entries is 0.000" for 1259578_g350
Mean and std. dev of mag. difference (MAG_DELTA) are 0.000 and -1.000 for 1259578_g350
Found 2 entries without IDs and 2 entries that are acceptable afterglow candidates for 1259578_g350.
Acceptable entries have no ID, XRT distances < 5.25", 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=153.3650 (10:13:27.60) DEC=11.5440 (+11:32:38.4)
XRT distances are from RA=153.3813 (10:13:31.52) DEC=11.5344 (+11:32:04.0)
*** WARNING 100 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1259578_g350 with genie
ra=153.37617 (10:13:30.28) dec=11.53817 (+11:32:17.4) +/- 0.7" mag=16.20+/-0.14
dist=22.6 REFID=2 major=1.0 minor=0.9 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 41.6 arc sec from the BAT position.
Found 7 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
153.3786 11.5343 16.4 -1 USNO-B1 19.31 18.87 19.07
153.3750 11.5378 4.4 -1 USNO-B1 14.74 99.99 99.99
153.3755 11.5378 2.7 -1 USNO-B1 14.88 14.21 14.51 *
153.3749 11.5372 5.6 -1 GSC2.3 15.91 17.03 99.99
153.3791 11.5343 17.2 -1 GSC2.3 17.74 19.39 18.30
153.3761 11.5381 0.4 -1 GSC2.3 15.17 16.06 14.28 *
153.3709 11.5389 18.6 -1 GSC2.3 99.99 22.22 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 1 in the list of sources is a candidate afterglow for 1259578_g350 with genie
ra=153.38137 (10:13:31.53) dec=11.53427 (+11:32:03.4) +/- 0.8" mag=18.13+/-0.18
dist=0.6 REFID=1 major=0.9 minor=0.8 flag=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
153.3787 11.5332 10.1 -1 USNO-B1 19.29 17.45 18.27
153.3786 11.5343 9.7 -1 USNO-B1 19.31 18.87 19.07
153.3799 11.5338 5.4 -1 USNO-B1 20.93 17.94 19.27
153.3828 11.5365 9.7 -1 USNO-B1 20.45 20.29 20.36
153.3834 11.5367 11.2 -1 USNO-B1 20.74 20.23 20.46
153.3791 11.5343 8.2 -1 GSC2.3 17.74 19.39 18.30
153.3832 11.5365 10.4 -1 GSC2.3 20.00 20.90 99.99
uvot_check_outside found 13 of 13 good pixels
##### This source remains a candidate #####
It has no entries within 3.5" or brighter than 12 mag
Found 4 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
153.3786 11.5343 9.5 -1 USNO-B1 19.31 18.87 19.07
153.3799 11.5338 5.4 -1 USNO-B1 20.93 17.94 19.27
153.3828 11.5365 9.3 -1 USNO-B1 20.45 20.29 20.36
153.3791 11.5343 8.0 -1 GSC2.3 17.74 19.39 18.30
The closest star is 5.45" away.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=153.38137 (10:13:31.53) dec=11.53427 (+11:32:03.4) +/- 0.8" mag=18.13+/-0.18 dist=0.6 REFID=1 flag=0
There are 97771.156 counts in the bkg source region of 6135.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 15.937 counts/pixel (5-sig UL in 4" is 18.87 mag) for 1259578_g350
There are 974.92407 counts in the src source region of 50.000000 pixels.
Rate in src region with 4 arcsec radius is 19.498 counts/pixel for 1259578_g350
There are 18824.422 counts in the cand_src_bkg source region of 1172.0000 pixels.
Rate in cand_src_bkg region from 15 to 25 arcsec is 16.062 counts/pixel (5-sig UL in 4" is 18.87 mag) for 1259578_g350
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 19.42, XRT distances < 5.25",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 1 good candidate(s) found.
Region file: 1259578_750247865_241010d16h26m15s850336usUT_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(153.3715,11.5420,45")
fk5;-circle(153.376173579393,11.5381667799421,6")
fk5;-circle(153.381371345731,11.5342653561357,6")
Region file: 1259578_750247865_241010d16h26m15s850336usUT_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(153.381371345731,11.5342653561357,4")
Region file: 1259578_750247865_241010d16h26m15s850336usUT_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(153.381371345731,11.5342653561357,25")
fk5;-circle(153.381371345731,11.5342653561357,15")
fk5;-circle(153.376173579393,11.5381667799421,6")
image paragraph message for exposure 2 of trigger 1259578
------ Start for Possible Stand-alone Circular ----
In response to GRB241010 (Swift/BAT trigger 1259578) at 10:05:14 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 230 seconds with the U filter starting
317 seconds after the BAT trigger. There is a candidate afterglow in the
rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 10:13:31.53 = 153.38137
DEC(J2000) = +11:32:03.4 = 11.53427
with a 90%-confidence error radius of about 0.81 arc sec. This position is 0.6
arc sec. from the center of the XRT error circle. The estimated magnitude is
18.13 with a 1-sigma error of about 0.18. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.039.
------- notes for trigger 1259578 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 241010d16h26m19s890248usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1259578
-expid=750247865 -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/1259578/
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 750247865.99164 or about 2024:284:10:11:00 UT
Found 730 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 7% of the srclist region. Found 23 sources in
srclist catalog. Found 5 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
18.07 mag.
Found 2 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
19.42 mag. Found 52 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 9% of the Genie image region. The
closest srclist source has ra= 153.3763 dec= 11.5382 mag=16.71 sep=22.38".
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?
750247865 316 U srclist found no candidates.
750247865 316 U 153.38137 11.53427 18.13/19.4 0.6 image Yes
List afterglow candidates for other finding charts.
750247654 105 WHITE 153.38145 11.53415 18.39/19.2 1.1 srclist Yes
750247654 105 WHITE 153.38141 11.53429 18.33/19.9 0.6 image Yes
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 11.53427
GRB_ERROR: 0.81
GRB_RA: 153.38137
IMAGE_START_TIME: 10:11:00
MAGNITUDE: 18.13
MAG_ERROR: 0.18
MESSAGE_TYPE: ACK
SOURCE: XRT