image overlap message for exposure 1 of trigger 1429608
uvot_overlap.pl vrs. 2010-12-20b fem started at 260101d07h57m26s557185usUT
The observation of trigger 1429608 started 2026-01-01T00:59:31.6
Examining file ./1429608_g180_uvot_sky_image.fits
The exposure ID is 788921971
The exposure time is 249.946 (seconds)
The filter is U.
The uvot region is centered at (86.4572,63.5740) with a roll angle of 339.0
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 (86.4650,63.5680) with a radius of 3.000 arc min
This is 0.416 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 (86.4290,63.5924) with a radius of 0.040 arc min
This is 1.335 arc min from the center of the uvot region
The area of the XRT error circle is 0.005 sq. arc min
The UVOT/XRT overlap is 0.005 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 1429608
find_uvot_ag.pl vrs. 2023-04-25a fem started at 260101d07h57m30s165083usUT
Observation start time is 2026-01-01T00:59:31.6
Examining file ./1429608_g180_uvot_catalog_image.fits
The exposure ID is 788921971
The exposure is 249.946 sec.
The bin size is 2 pixels
The filter is U
There are 9 detected source(s) for 1429608_g180
Aspect correction adds 0.00052 degrees (0.126 sec of time = 0.84 arc sec) to RA
Aspect correction adds 0.00101 degrees ( 3.64 arcsec) to Dec
Total aspect correction is 3.73 arcsec
Star catalogs centered at 86.4582 , 63.5730 with radius 2.40 arc min.
n_usno: 73 n_gsc: 89
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 8 matched entries is 0.347" for 1429608_g180
Mean and std. dev of mag. difference (MAG_DELTA) are 1.461 and 0.474 for 1429608_g180
Found 1 entries without IDs and 1 entries that are acceptable afterglow candidates for 1429608_g180.
Acceptable entries have no ID, XRT distances < 6", 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=86.4650 (05:45:51.60) DEC=63.5680 (+63:34:04.8)
XRT distances are from RA=86.4290 (05:45:42.96) DEC=63.5924 (+63:35:32.6)
-----------------
Entry 8 in the list of sources is a candidate afterglow for 1429608_g180 with genie
ra=86.42890 (05:45:42.94) dec=63.59225 (+63:35:32.1) +/- 0.6" mag=16.03+/-0.14
dist=0.5 REFID=2 major=1.0 minor=0.9 flag=0
Found 6 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
86.4232 63.5890 14.7 -1 USNO-B1 18.13 16.72 17.35
86.4206 63.5919 13.4 -1 USNO-B1 20.36 19.40 19.82
86.4300 63.5954 11.6 -1 USNO-B1 21.25 19.80 20.44
86.4233 63.5890 14.8 -1 GSC2.3 16.66 17.95 17.31
86.4209 63.5919 12.8 -1 GSC2.3 19.01 20.75 99.99
86.4302 63.5954 11.6 -1 GSC2.3 19.80 22.30 99.99
uvot_check_outside found 12 of 12 good pixels
##### This source remains a candidate #####
It has no entries 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=86.42890 (05:45:42.94) dec=63.59225 (+63:35:32.1) +/- 0.6" mag=16.03+/-0.14 dist=0.5 REFID=2 flag=0
There are 13337.608 counts in the bkg source region of 6017.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 2.217 counts/pixel (5-sig UL in 4" is 20.03 mag) for 1429608_g180
There are 1684.8840 counts in the src source region of 52.000000 pixels.
Rate in src region with 4 arcsec radius is 32.402 counts/pixel for 1429608_g180
source too far from center -- do not compute local background.
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 20.59, XRT distances < 6",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 1 good candidate(s) found.
Region file: 1429608_788921971_260101d07h57m30s165083usUT_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(86.4572,63.5740,45")
fk5;-circle(86.4640363923773,63.5704228548604,6")
fk5;-circle(86.4434182963835,63.5761510351199,6")
fk5;-circle(86.4585021680805,63.5862149355786,6")
Region file: 1429608_788921971_260101d07h57m30s165083usUT_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(86.4289049137075,63.5922509226543,4")
image paragraph message for exposure 1 of trigger 1429608
------ Start for Possible Stand-alone Circular ----
In response to GRB260101 (Swift/BAT trigger 1429608) at 00:56:30 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
144 seconds after the BAT trigger. There is a candidate afterglow in the
rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 05:45:42.94 = 86.42890
DEC(J2000) = +63:35:32.1 = 63.59225
with a 90%-confidence error radius of about 0.61 arc sec. This position is 0.5
arc sec. from the center of the XRT error circle. The estimated magnitude is
16.03 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.179.
------- notes for trigger 1429608 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 260101d07h57m36s688303usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1429608
-expid=788921971 -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/1429608/
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 788921971.56034 or about 0000:11689:00:59:35 UT
Found 1089 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 9% of the srclist region. Found 132 sources in
srclist catalog. Found 13 srclist source(s) without IDs. There are 1 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
18.12 mag.
Found 9 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 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.59 mag. Found 89 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 10% 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?
788921971 143 U 86.42901 63.59226 16.60/18.1 0.5 srclist Yes
788921971 143 U 86.42890 63.59225 16.03/20.6 0.5 image Yes
List afterglow candidates for other finding charts.
788922703 875 U 86.42838 63.59212 18.83/17.8 0.3 srclist Yes
788922703 875 U 86.42888 63.59230 17.03/20.3 1.4 image Yes
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 63.59225
GRB_ERROR: 0.61
GRB_RA: 86.42890
MAGNITUDE: 16.03
MAG_ERROR: 0.14
MESSAGE_TYPE: ACK
SOURCE: XRT