TDRSS lightcurve for Trigger=896552
Notes:
- 1) None of the TDRSS light curves are background subtracted.
GCN BAT Position Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Thu 04 Apr 19 05:58:43 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 896552, Seg_Num: 0
GRB_RA: 164.407d {+10h 57m 38s} (J2000),
164.616d {+10h 58m 28s} (current),
163.865d {+10h 55m 28s} (1950)
GRB_DEC: -52.387d {-52d 23' 12"} (J2000),
-52.490d {-52d 29' 24"} (current),
-52.119d {-52d 07' 08"} (1950)
GRB_ERROR: 4.00 [arcmin radius, statistical only]
GRB_INTEN: 0 [cnts] Image_Peak=2232 [image_cnts]
TRIGGER_DUR: 64.000 [sec]
TRIGGER_INDEX: 20000 E_range: 15-50 keV
BKG_INTEN: 0 [cnts]
BKG_TIME: 0.00 SOD {00:00:00.00} UT
BKG_DUR: 0 [sec]
GRB_DATE: 18577 TJD; 94 DOY; 19/04/04
GRB_TIME: 21449.31 SOD {05:57:29.31} UT
GRB_PHI: 32.04 [deg]
GRB_THETA: 24.54 [deg]
SOLN_STATUS: 0x99D
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 5.83 [sigma]
MERIT_PARAMS: +0 +0 +95 +6 +1 -5 +0 +1 +61 +1
SUN_POSTN: 13.06d {+00h 52m 14s} +5.59d {+05d 35' 37"}
SUN_DIST: 127.60 [deg] Sun_angle= -10.1 [hr] (East of Sun)
MOON_POSTN: 3.26d {+00h 13m 02s} -3.61d {-03d 36' 19"}
MOON_DIST: 121.73 [deg]
MOON_ILLUM: 1 [%]
GAL_COORDS: 285.91, 6.68 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 195.64,-52.38 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS: SWIFT-BAT GRB Coordinates.
COMMENTS: This is an image trigger. (The RATE_SIGNIF & BKG_{INTEN, TIME, DUR} are undefined.)
COMMENTS: A point_source was found.
COMMENTS: This matches a source in the on-board catalog: Num=10105=PSR_B1055-52, delta=0.085 [deg].
COMMENTS: This matches a source in the ground catalog: PSR_B1055-52, delta=0.085 [deg].
COMMENTS: This is not a GRB.
COMMENTS: This is an interesting source.
COMMENTS:
COMMENTS: The IMAGE_SIGNIF is VERY LOW, this is very likely not real.
GCN BAT Lightcurve Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Thu 04 Apr 19 06:15:07 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 896552, Seg_Num: 0
GRB_RA: 164.407d {+10h 57m 38s} (J2000),
164.616d {+10h 58m 28s} (current),
163.865d {+10h 55m 28s} (1950)
GRB_DEC: -52.387d {-52d 23' 12"} (J2000),
-52.490d {-52d 29' 24"} (current),
-52.119d {-52d 07' 08"} (1950)
GRB_DATE: 18577 TJD; 94 DOY; 19/04/04
GRB_TIME: 21449.31 SOD {05:57:29.31} UT
TRIGGER_INDEX: 20000
GRB_PHI: 32.04 [deg]
GRB_THETA: 24.54 [deg]
DELTA_TIME: 0.00 [sec]
TRIGGER_DUR: 64.000 [sec]
SOLN_STATUS: 0x99D
RATE_SIGNIF: 0.00 [sigma]
IMAGE_SIGNIF: 5.83 [sigma]
LC_URL: sw00896552000msb.lc
GCN template for BAT paragraph
Click here!
At 05:57:29 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 190404 ***A*** (trigger=896552). Swift slewed immediately to the burst.
The BAT on-board calculated location is
RA, Dec 164.407, -52.387 which is
RA(J2000) = 10h 57m 38s
Dec(J2000) = -52d 23' 12"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a [**double-peaked**]
structure with a duration of about TTT sec. The peak count rate
was ~2408 counts/sec (15-350 keV), at ~122 sec after the trigger.
Test version of draft template
Initial TDRSS lightcurve and spacecraft attitude plot
TDRSS lightcurve from T0-30 to T0+50 (zoom in)
TDRSS light curve from T0-1 to T0+2 (More zoom in)
1.6s binned TDRSS light curve
Tilan's background subtracted TDRSS light curves
Extended TDRSS light curve and spacecraft attitude plot(s)
Extended TDRSS lc No.1
Extended TDRSS lc No.2
Extended TDRSS lc No.3
Extended TDRSS lc No.4
TDRSS extended lightcurve from T0-1 to T0+2
T50 and T90 calculation
******************************************
battblocks v1.18
------------------------------------------
Input Data: bat_raw_lc.fits
Output GTI: bb.gti
Events to Skip: 128 Changepoint log(prob) Prior: 6.000000
Internal Tick: 1.000000e-04 s
Lookback time: 0 s
Bkg. Subtract?: yes (for fluence/T50/T90 calculations)
------------------------------------------
Estimated T90 duration: 133.248 s +/- 2.89772 s
Estimated T50 duration: 61.44 s +/- 4.096 s
Estimated Peak Interval: MET 576050341.18399990 +/- 0.500000 s
Estimated background rate 1: 8465.208 near MET 576050252.800000 s
Estimated background rate 2: 10505.685 near MET 576050443.584000 s
Estimated total duration: 171.648 s (for data selection)
(from MET 576050257.600000 to MET 576050429.248000)
Estimated total fluence: 108780.229706 count
Created GTI with 10 entries
------------------------------------------
Search for this GRB position to the previously BAT detected GRB positions (search radius within 5 arcmin)
bat_grb_pos_cat.sh 164.407 -52.387 0.083
No match
Search for this GRB position to the source locations in BAT transient monitor (search radius within 12 arcmin)
python compare_catalog.py 164.407 -52.387
PSR B1055-52 10105 164.5 -52.45 0.08474447035446651
Link to SIMBAD
Click here for the SIMBAD search!
Frank's UVOT result
Click here!
Frank's UVOT Blinking images
Click here!
Elevation angle of GRB/Sun at the ground telescope locations
GSFC, Greenbelt, Maryland
TimeUT Azimuth Elevation
Sun: 2019 4 4 6 196.501614 -44.098198
Obj: 2019 4 4 6 23.420437 -7.982961
the object visibility at GSFC, Greenbelt, Maryland
MMT Observatory, Mt. Hopkins, Arizona
TimeUT Azimuth Elevation
Sun: 2019 4 4 6 146.491107 -47.165854
Obj: 2019 4 4 6 3.837134 5.608036
the object visibility at MMT, Mt. Hopkins, Arizona
Hale Telescope, Palomar Mountain, California
TimeUT Azimuth Elevation
Sun: 2019 4 4 6 140.219222 -42.818333
Obj: 2019 4 4 6 0.180533 4.119807
the object visibility at Hale Telescope, Palomar Mt., California
Mauna Kea, Hawaii
TimeUT Azimuth Elevation
Sun: 2019 4 4 6 103.828353 -19.694136
Obj: 2019 4 4 6 337.436622 10.351563
the object visibility at Mauna Kea, Hawaii
Siding Spring Obs., Australia
TimeUT Azimuth Elevation
Sun: 2019 4 4 6 113.087449 23.717648
Obj: 2019 4 4 6 318.990116 22.158989
the object visibility at Siding Spring Obs., Australia
Tokyo, Japan
TimeUT Azimuth Elevation
Sun: 2019 4 4 6 62.377020 42.294620
Obj: 2019 4 4 6 313.129168 -38.579675
the object visibility at Tokyo, Japan
William Herschel Telescope, La Palma, Canary Islands, Spain
TimeUT Azimuth Elevation
Sun: 2019 4 4 6 255.522463 -13.894837
Obj: 2019 4 4 6 42.831997 -27.914409
the object visibility at William Hershel Telescope, La Palma, Canary Islands, Spain
Gemini South, Cerro Pachon, Chile
TimeUT Azimuth Elevation
Sun: 2019 4 4 6 322.467500 -60.179192
Obj: 2019 4 4 6 42.964910 49.841260
the object visibility at Gemini South, Cerro Pachon, Chile
The data/results are in /local/data/bat1/prebascript/trigger896552/tdrss_ql/
bat_raw_lc.fits : TDRSS FITS light curve from GCN
gcn_position.txt : GCN BAT position notice
ratelc_tdrss.qdp : QDP file of the TDRSS light curve
tdrss_lc.gif : GIF TDRSS light curve
sc_att.qdp : QDP file of the spacecraft attitude
sc_att.gif : GIF spacecraft attitude
bb.gti : Bayesian block GTI file (battblocks)
dur.gti : Duration GTI file (battblocks)
battblocks.log : Output log of battblocks
Plot creation:
Thu Apr 4 02:16:07 EDT 2019