image overlap message for exposure 1 of trigger 954519
uvot_overlap.pl vrs. 2010-12-20b fem started at 200206d03h53m35s182970usUT
The observation of trigger 954519 started 2020-02-05T19:27:59.4
Examining file ./954519_g375_uvot_sky_image.fits
The exposure ID is 602623679
The exposure time is 149.868 (seconds)
The filter is WHITE.
The uvot region is centered at (107.7845,-56.4915) with a roll angle of 210.7
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 (107.8030,-56.4810) with a radius of 3.000 arc min
This is 0.881 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 (107.7876,-56.4874) with a radius of 0.027 arc min
This is 0.268 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
image afterglow message for exposure 1 of trigger 954519
find_uvot_ag.pl vrs. 2017-02-17 fem started at 200206d03h53m40s085379usUT
Observation start time is 2020-02-05T19:27:59.4
Examining file ./954519_g375_uvot_catalog_image.fits
The exposure ID is 602623679
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 12 detected source(s) for 954519_g375
Aspect correction adds 0.00290 degrees (0.697 sec of time = 5.77 arc sec) to RA
Aspect correction adds -0.00075 degrees (-2.69 arcsec) to Dec
Total aspect correction is 6.37 arcsec
Star catalogs centered at 107.7930 , -56.4929 with radius 2.78 arc min.
n_usno: 110 n_gsc: 0
Bright star catalog has no entries brighter than 12 mag
Mean distance difference (CAT_DELTA) for 11 matched entries is 0.569" for 954519_g375
Mean and std. dev of mag. difference (MAG_DELTA) are 1.079 and 0.542 for 954519_g375
Found 1 entries without IDs and 1 entries that are acceptable afterglow candidates for 954519_g375.
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.
Magnitude criteria will be applied later.
BAT distances are from RA=107.8030 (07:11:12.72) DEC=-56.4810 (-56:28:51.6)
XRT distances are from RA=107.7876 (07:11:09.03) DEC=-56.4874 (-56:29:14.7)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 954519_g375 with genie
ra=107.78811 (07:11:09.15) dec=-56.48753 (-56:29:15.1) +/- 0.6" mag=16.43+/-0.14
dist=1.0 REFID=7 major=1.3 minor=1.2 flag=0
Found 2 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
107.7955 -56.4907 18.6 -1 USNO-B1 20.25 18.21 19.12
107.7866 -56.4837 13.9 -1 USNO-B1 17.54 15.92 16.64
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 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=107.78811 (07:11:09.15) dec=-56.48753 (-56:29:15.1) +/- 0.6" mag=16.43+/-0.14 dist=1.0 REFID=7 flag=0
There are 40155.637 counts in the bkg source region of 5856.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 6.857 counts/pixel (5-sig UL in 4" is 20.30 mag) for 954519_g375
There are 3439.6807 counts in the src source region of 50.000000 pixels.
Rate in src region with 4 arcsec radius is 68.794 counts/pixel for 954519_g375
There are 7592.4697 counts in the cand_src_bkg source region of 1077.0000 pixels.
Rate in cand_src_bkg region from 15 to 25 arcsec is 7.050 counts/pixel (5-sig UL in 4" is 20.29 mag) for 954519_g375
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 20.86, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 1 good candidate(s) found.
Region file: 954519_602623679_200206d03h53m40s085379usUT_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(107.7845,-56.4915,45")
fk5;-circle(107.78811369518,-56.4875306369959,6")
fk5;-circle(107.786655656297,-56.4837988599145,6")
fk5;-circle(107.794773735462,-56.4906635714659,6")
fk5;-circle(107.793314574526,-56.4941371520053,6")
Region file: 954519_602623679_200206d03h53m40s085379usUT_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(107.78811369518,-56.4875306369959,4")
Region file: 954519_602623679_200206d03h53m40s085379usUT_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(107.78811369518,-56.4875306369959,25")
fk5;-circle(107.78811369518,-56.4875306369959,15")
fk5;-circle(107.786655656297,-56.4837988599145,6")
fk5;-circle(107.794773735462,-56.4906635714659,6")
fk5;-circle(107.793314574526,-56.4941371520053,6")
image paragraph message for exposure 1 of trigger 954519
------ Start for Possible Stand-alone Circular ----
In response to GRB200205 (Swift/BAT trigger 954519) at 19:21:43 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 351 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 07:11:09.15 = 107.78811
DEC(J2000) = -56:29:15.1 = -56.48753
with a 90%-confidence error radius of about 0.61 arc sec. This position is 1.0
arc sec. from the center of the XRT error circle. The estimated magnitude is
16.43 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.11.
------- notes for trigger 954519 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 200206d03h53m43s727572usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=954519
-expid=602623679 -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/954519/
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 602623679.36022 or about 2020:036:19:27:54 UT
Found 446 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 10% of the srclist region. Found 101 sources in
srclist catalog. Found 15 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 12 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
20.86 mag. Found 106 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 9% 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?
602623679 351 WHITE 107.78836 -56.48789 17.82/19.2 2.2 srclist Yes
602623679 351 WHITE 107.78811 -56.48753 16.43/20.9 1.0 image Yes
List afterglow candidates for other finding charts.
602624189 861 WHITE 107.78811 -56.48768 18.63/19.2 0.7 srclist Yes
602624189 861 WHITE 107.78813 -56.48755 17.88/20.9 0.2 image Yes
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -56.48753
GRB_ERROR: 0.61
GRB_RA: 107.78811
IMAGE_START_TIME: 19:27:54
MAGNITUDE: 16.43
MAG_ERROR: 0.14
MESSAGE_TYPE: ACK
SOURCE: XRT