| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB160419637 |
|
| T0 |
15:16:14.909 UTC |
Fermi_GBM |
| ra |
16.4180° |
Swift |
| decl |
-27.3410° |
Swift |
| pos_error |
7.77e-03° |
Swift |
| T90 |
24.32 s |
Fermi_GBM |
| T90_error |
6.964 s |
Fermi_GBM |
| T90_start |
15:16:14.909 UTC |
Fermi_GBM |
| fluence |
1.52e-06 erg/cm² |
Fermi_GBM |
| fluence_error |
6.11e-08 erg/cm² |
Fermi_GBM |
| T100 |
30.891 s |
|
| GBM_located |
False |
|
| mjd |
57497.63628366898 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB160419637 |
| trigger_name |
bn160419637 |
| ra |
16.4242° |
| decl |
-27.3431° |
| pos_error |
4.62e+00° |
| datum |
2016-04-19 |
| t_trigger |
15:16:35.389 UTC |
| T90 |
24.32 s |
| T90_error |
6.964 s |
| T90_start |
15:16:14.909 UTC |
| fluence |
1.52e-06 erg/cm² |
| fluence_error |
6.11e-08 erg/cm² |
| flux_1024 |
1.92e+00 erg/cm²/s |
| flux_1024_error |
2.53e-01 erg/cm²/s |
| flux_1024_time |
-1.15e+00 erg/cm²/s |
| flux_64 |
3.79e+00 erg/cm²/s |
| flux_64_error |
1.10e+00 erg/cm²/s |
| IPN table |
|---|
| GRB_name |
GRB160419A |
| ra |
16.4250° |
| decl |
-27.3500° |
| pos_error |
5.00e-02° |
| Swift table |
|---|
| GRB_name |
GRB160419A |
| t_trigger |
15:16:37 UTC |
| ra |
16.4180° |
| decl |
-27.3410° |
| pos_error |
7.77e-03° |
| T90 |
8.8 s |
| fluence |
3.50e-06 erg/cm² |
| GCN 19326 table |
|---|
| GRB_name |
GRB160419A |
| GCN_number |
19326 |
| Detection_method |
Swift Det |
| t_trigger |
15:16:37 UTC |
| ra |
16.4240° |
| decl |
-27.3430° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 19326
SUBJECT: GRB 160419A: Swift detection of a burst
DATE: 16/04/19 15:32:18 GMT
FROM: David Palmer at LANL
C. B. Markwardt (NASA/GSFC), J. A. Kennea (PSU),
H. A. Krimm (CRESST/GSFC/USRA), A. Melandri (INAF-OAB),
K. L. Page (U Leicester), D. M. Palmer (LANL), M. H. Siegel (PSU) and
T. N. Ukwatta (LANL) report on behalf of the Swift Team:
At 15:16:37 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 160419A (trigger=683383). Swift did not slew to the
burst due to an observing constraint.
The BAT on-board calculated location is
RA, Dec 16.424, -27.343 which is
RA(J2000) = 01h 05m 42s
Dec(J2000) = -27d 20' 32"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a single symmetric
peak structure with a duration of about 20 sec. The peak count rate
was ~5000 counts/sec (15-350 keV), at ~0 sec after the trigger.
Due to a Sun observing constraint, Swift cannot slew to the BAT
position until 01:44 UT on 2016 April 30. There will thus be no XRT or
UVOT data for this trigger before this time.
Burst Advocate for this burst is C. B. Markwardt (Craig.Markwardt AT nasa.gov).
Please contact the BA by email if you require additional information
regarding Swift followup of this burst. In extremely urgent cases, after
trying the Burst Advocate, you can contact the Swift PI by phone (see
Swift TOO web site for information: http://www.swift.psu.edu/too.html.)
|
| GCN 19327 table |
|---|
| GRB_name |
GRB160419A |
| GCN_number |
19327 |
| Detection_method |
Fermi GBM Det |
| t_trigger |
15:16:35.390 UTC |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 19327
SUBJECT: GRB 160419A: Fermi GBM detection
DATE: 16/04/19 21:27:21 GMT
FROM: Bagrat Mailyan at UAH
B. Mailyan (UAH), C. Meegan (UAH) and P. Veres (UAH)
report on behalf of the Fermi GBM Team:
"At 15:16:35.39 UT on 19 April 2016, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 160419A (trigger 482771799 / 160419.637), which
was also detected by the Swift/BAT (C. B. Markwardt et al. 2016, GCN 19326).
The GBM on-ground location is consistent with the Swift position.
The angle from the Fermi LAT boresight at the GBM trigger
time using the Swift BAT position is about 127 degrees.
The GBM light curve consists of a weak burst with a
duration (T90) of about 24 s (50-300 keV). The time-averaged
spectrum from T0-1.3 s to T0+2.7 s is best fit by a power
law function with an exponential high-energy cutoff function,
with Epeak = 438 +/- 118 keV and alpha = -0.49 +/- 0.28.
The event fluence (10-1000 keV) in this time interval is
(1.675 +/- 0.221)E-06 erg/cm^2. The 1s peak photon flux
measured starting from T0-1.15 s in the 10-1000 keV band
is 1.92 +/- 0.25 ph/s/cm^2.
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog."
[GCN OPS NOTE(20apr16): In the Subject line, "150419A" was changed to "160419A"]
|
| GCN 19328 table |
|---|
| GRB_name |
GRB160419A |
| GCN_number |
19328 |
| Detection_method |
Swift-BAT Det |
| ra |
16.4180° |
| decl |
-27.3410° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 19328
SUBJECT: GRB 160419A, Swift-BAT refined analysis
DATE: 16/04/21 12:58:28 GMT
FROM: Amy Lien at GSFC
J. R. Cummings (GSFC/UMBC), S. D. Barthelmy (GSFC), N. Gehrels (GSFC),
H. A. Krimm (GSFC/USRA), A. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC),
D. M. Palmer (LANL), T. Sakamoto (AGU), M. Stamatikos (OSU),
T. N. Ukwatta (LANL) (i.e. the Swift-BAT team):
Using the data set from T-240 to T+963 sec from the recent telemetry downlink,
we report further analysis of BAT GRB 160419A (trigger #683383)
(Markwardt et al., GCN Circ. 19326). The BAT ground-calculated position is
RA, Dec = 16.418, -27.341 deg which is
RA(J2000) = 01h 05m 40.3s
Dec(J2000) = -27d 20' 28.7"
with an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment).
The partial coding was 16%.
The mask-weighted light curve shows a triangle-shaped, single-peaked structure
that starts at ~ T-4 s, peaks at ~T0, and ends at ~T0+8 s. T90 (15-350 keV)
is 8.8 +- 1.1 sec (estimated error including systematics).
The time-averaged spectrum from T-4.5 to T+8.5 sec is best fit by a power law
with an exponential cutoff. This fit gives a photon index 0.76 +- 0.33,
and Epeak of 107.1 +- 35.2 keV (chi squared 40.46 for 56 d.o.f.). For this
model the total fluence in the 15-150 keV band is 3.5 +- 0.2 x 10^-6 erg/cm2
and the 1-sec peak flux measured from T+0.00 sec in the 15-150 keV band is
8.9 +- 0.7 ph/cm2/sec. A fit to a simple power law gives a photon index
of 1.40 +- 0.07 (chi squared 53.01 for 57 d.o.f.). All the quoted errors
are at the 90% confidence level.
The results of the batgrbproduct analysis are available at
http://gcn.gsfc.nasa.gov/notices_s/683383/BA/
|
| GCN 19332 table |
|---|
| GRB_name |
GRB160419A |
| GCN_number |
19332 |
| Detection_method |
CALET |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 19332
SUBJECT: GRB 160419A: CALET Gamma-Ray Burst Monitor detection
DATE: 16/04/22 22:58:00 GMT
FROM: Takanori Sakamoto at AGU
M. L. Cherry (LSU), A. Yoshida, T. Sakamoto, Y. Kawakubo, M. Moriyama,
Y. Yamada (AGU), K. Yamaoka (Nagoya U), S. Nakahira (JAXA), I. Takahashi (IPMU),
Y. Asaoka, S. Ozawa, S. Torii (Waseda U), Y. Shimizu, T. Tamura (Kanagawa U),
W. Ishizaki (ICRR), S. Ricciarini (U of Florence), P. S. Marrocchesi (U of Siena)
and the CALET collaboration:
The long-duration GRB 160419A (Markwardt et al., GCN circ. 19326; Mailyan et al.,
GCN circ. 19327) triggered the CALET Gamma-Ray Burst Monitor (CGBM) at 15:16:35.4 on
19 April 2016. The burst signal was seen by all CGBM instruments.
The light curve of the HXM shows several spikes. The emission starts from T0-2 sec,
peaks at T0+3 sec and ends at T0+10 sec. The T90 duration measured by the HXM2 data
is 6.2 +- 0.9 sec (50-250 keV).
The CGBM data used in this analysis are provided by the Waseda CALET Operation Center
located at the Waseda University.
|