image overlap message for exposure 2 of trigger 1167973
uvot_overlap.pl vrs. 2010-12-20b fem started at 230510d19h03m46s935209usUT
The observation of trigger 1167973 started 2023-05-10T12:11:43.9
Examining file ./1167973_g314_uvot_sky_image.fits
The exposure ID is 705413503
The exposure time is 33.186 (seconds)
The filter is U.
The uvot region is centered at (318.1373,34.4454) with a roll angle of 75.8
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 (318.1560,34.4430) with a radius of 3.000 arc min
This is 0.938 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 (318.1367,34.4431) with a radius of 0.037 arc min
This is 0.143 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 1167973
find_uvot_ag.pl vrs. 2023-04-25a fem started at 230510d19h04m08s635786usUT
Observation start time is 2023-05-10T12:11:43.9
Examining file ./1167973_g314_uvot_catalog_image.fits
The exposure ID is 705413503
The exposure is 33.186 sec.
The bin size is 2 pixels
The filter is U
There are 22 detected source(s) for 1167973_g314
Aspect correction adds 0.00137 degrees (0.330 sec of time = 4.08 arc sec) to RA
Aspect correction adds 0.00080 degrees ( 2.89 arcsec) to Dec
Total aspect correction is 5.00 arcsec
Star catalogs centered at 318.1360 , 34.4459 with radius 2.49 arc min.
n_usno: 258 n_gsc: 306
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 10.40886
RA DEC Mag Color
bright star 0: 318.16778 (21:12:40.27) 34.47492 (+34:28:29.7) 11.19 USNO-V
bright star 1: 318.18322 (21:12:43.97) 34.43211 (+34:25:55.6) 10.41 USNO-V
Mean distance difference (CAT_DELTA) for 19 matched entries is 0.393" for 1167973_g314
Mean and std. dev of mag. difference (MAG_DELTA) are 1.426 and 0.574 for 1167973_g314
Found 3 entries without IDs and 3 entries that are acceptable afterglow candidates for 1167973_g314.
Acceptable entries have no ID, XRT distances < 5.5", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
0 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=318.1560 (21:12:37.44) DEC=34.4430 (+34:26:34.8)
XRT distances are from RA=318.1367 (21:12:32.81) DEC=34.4431 (+34:26:35.0)
-----------------
Entry 2 in the list of sources is a candidate afterglow for 1167973_g314 with genie
ra=318.13697 (21:12:32.87) dec=34.44343 (+34:26:36.4) +/- 1.1" mag=18.65+/-0.33
dist=1.5 REFID=15 major=0.9 minor=0.8 flag=0
Found 10 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
318.1384 34.4456 8.7 -1 USNO-B1 17.93 16.49 17.13
318.1395 34.4460 11.8 -1 USNO-B1 17.28 15.91 16.52
318.1341 34.4405 13.6 -1 USNO-B1 16.57 15.11 15.76
318.1362 34.4402 12.0 -1 USNO-B1 18.66 17.28 17.89
318.1381 34.4454 7.9 -1 GSC2.3 17.29 18.85 17.95
318.1364 34.4489 19.9 -1 GSC2.3 17.47 18.99 17.76
318.1397 34.4460 12.3 -1 GSC2.3 16.82 18.11 17.02
318.1340 34.4404 13.9 -1 GSC2.3 15.68 16.91 15.97
318.1403 34.4415 12.2 -1 GSC2.3 19.82 21.60 99.99
318.1364 34.4401 12.1 -1 GSC2.3 17.96 19.31 18.09
uvot_check_outside found 14 of 14 good pixels
##### This source remains a candidate #####
It has no entries within 3.5" or brighter than 12 mag
-----------------
Entry 14 in the list of sources is a candidate afterglow for 1167973_g314 with genie
ra=318.13945 (21:12:33.47) dec=34.45986 (+34:27:35.5) +/- 0.7" mag=17.02+/-0.18
dist=61.0 REFID=4 major=0.9 minor=0.7 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 78.1 arc sec from the BAT position.
Found 14 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
318.1354 34.4559 18.5 -1 USNO-B1 19.00 17.77 18.32
318.1391 34.4578 7.4 -1 USNO-B1 17.13 15.40 16.17
318.1411 34.4590 5.9 -1 USNO-B1 12.99 11.53 12.18 *
318.1332 34.4611 19.1 -1 USNO-B1 19.84 18.36 19.01
318.1376 34.4618 8.8 -1 USNO-B1 18.43 16.80 17.52
318.1412 34.4652 19.8 -1 USNO-B1 20.36 18.59 19.37
318.1354 34.4559 18.6 -1 GSC2.3 17.81 19.38 18.39
318.1389 34.4576 8.4 -1 GSC2.3 16.57 17.87 17.16
318.1358 34.4588 11.6 -1 GSC2.3 19.29 21.14 99.99
318.1417 34.4589 7.5 -1 GSC2.3 12.40 13.86 12.28
318.1396 34.4599 0.3 -1 GSC2.3 15.94 17.23 99.99 *
318.1332 34.4610 19.1 -1 GSC2.3 18.52 19.99 18.68
318.1376 34.4617 8.7 -1 GSC2.3 17.31 18.79 17.82
318.1419 34.4646 18.6 -1 GSC2.3 19.27 20.81 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 15 in the list of sources is a candidate afterglow for 1167973_g314 with genie
ra=318.14183 (21:12:34.04) dec=34.45912 (+34:27:32.8) +/- 0.6" mag=14.81+/-0.15
dist=59.8 REFID=5 major=0.9 minor=0.8 flag=2 (blended)
*** The position of this source is inconsistent with the XRT position.
The position is 71.7 arc sec from the BAT position.
Found 13 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
318.1417 34.4543 17.2 -1 USNO-B1 20.33 18.58 19.36
318.1391 34.4578 9.3 -1 USNO-B1 17.13 15.40 16.17
318.1411 34.4590 2.2 -1 USNO-B1 12.99 11.53 12.18 *
318.1376 34.4618 15.7 -1 USNO-B1 18.43 16.80 17.52
318.1456 34.4626 16.7 -1 USNO-B1 20.06 18.11 18.97
318.1417 34.4543 17.4 -1 GSC2.3 18.75 20.46 18.72
318.1389 34.4576 10.3 -1 GSC2.3 16.57 17.87 17.16
318.1358 34.4588 18.0 -1 GSC2.3 19.29 21.14 99.99
318.1417 34.4589 0.8 -1 GSC2.3 12.40 13.86 12.28 *
318.1396 34.4599 7.3 -1 GSC2.3 15.94 17.23 99.99
318.1376 34.4617 15.8 -1 GSC2.3 17.31 18.79 17.82
318.1455 34.4625 16.4 -1 GSC2.3 18.34 20.24 18.82
318.1419 34.4646 19.9 -1 GSC2.3 19.27 20.81 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 1 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
318.1381 34.4454 9.4 -1 GSC2.3 17.29 18.85 17.95
The closest star is 9.44" away.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=318.13697 (21:12:32.87) dec=34.44343 (+34:26:36.4) +/- 1.1" mag=18.65+/-0.33 dist=1.5 REFID=15 flag=0
There are 4176.7949 counts in the bkg source region of 5547.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 0.753 counts/pixel (5-sig UL in 4" is 18.43 mag) for 1167973_g314
There are 69.772743 counts in the src source region of 50.000000 pixels.
Rate in src region with 4 arcsec radius is 1.395 counts/pixel for 1167973_g314
There are 761.19019 counts in the cand_src_bkg source region of 1031.0000 pixels.
Rate in cand_src_bkg region from 15 to 25 arcsec is 0.738 counts/pixel (5-sig UL in 4" is 18.44 mag) for 1167973_g314
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 18.98, XRT distances < 5.5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 1 good candidate(s) found.
Region file: 1167973_705413503_230510d19h04m08s635786usUT_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(318.1373,34.4454,45")
fk5;-circle(318.134021486491,34.4404508943633,6")
fk5;-circle(318.127734837003,34.4443816243073,6")
fk5;-circle(318.136965984609,34.4434327246335,6")
fk5;-circle(318.131966196039,34.4494964984752,6")
fk5;-circle(318.139897617238,34.4459186026675,6")
fk5;-circle(318.130328542079,34.4333477412008,6")
fk5;-circle(318.144745622164,34.4443319575312,6")
fk5;-circle(318.138947586122,34.4576147831041,6")
Region file: 1167973_705413503_230510d19h04m08s635786usUT_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(318.136965984609,34.4434327246335,4")
Region file: 1167973_705413503_230510d19h04m08s635786usUT_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(318.136965984609,34.4434327246335,25")
fk5;-circle(318.136965984609,34.4434327246335,15")
fk5;-circle(318.134021486491,34.4404508943633,6")
fk5;-circle(318.127734837003,34.4443816243073,6")
fk5;-circle(318.131966196039,34.4494964984752,6")
fk5;-circle(318.139897617238,34.4459186026675,6")
fk5;-circle(318.144745622164,34.4443319575312,6")
image paragraph message for exposure 2 of trigger 1167973
------ Start for Possible Stand-alone Circular ----
In response to GRB230510 (Swift/BAT trigger 1167973) at 12:06:28 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 33 seconds with the U filter starting
284 seconds after the BAT trigger. There is a candidate afterglow in the
rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 21:12:32.87 = 318.13697
DEC(J2000) = +34:26:36.3 = 34.44343
with a 90%-confidence error radius of about 1.09 arc sec. This position is 1.5
arc sec. from the center of the XRT error circle. The estimated magnitude is
18.65 with a 1-sigma error of about 0.33. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.144.
------- notes for trigger 1167973 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 230510d19h04m12s501052usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1167973
-expid=705413503 -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/1167973/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
XRT position found for Genie image. BAT position found.
UVOT exposure began at MET 705413503.94962 or about 2023:130:12:11:38 UT
No information found about the number of stars in the star catalog for srclist
region.
Found 22 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 3 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
18.98 mag. Found 306 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 34% 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?
705413503 283 U srclist data are not available.
705413503 283 U 318.13697 34.44343 18.65/19.0 1.5 image Yes
List afterglow candidates for other finding charts.
705413291 71 WHITE srclist found no candidates.
705413291 71 WHITE 318.13703 34.44326 19.11/20.5 1.2 image Yes
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 34.44343
GRB_ERROR: 1.09
GRB_RA: 318.13697
IMAGE_START_TIME: 12:11:38
MAGNITUDE: 18.65
MAG_ERROR: 0.33
MESSAGE_TYPE: ACK
SOURCE: XRT